Home/Calculators

All calculators

Browse every calculator on Calculorium, grouped by category.

Finance

Amortization CalculatorPayment, total interest & payoff Annual Income CalculatorHourly wage to yearly, monthly & weekly pay APY CalculatorAnnual percentage yield & interest earned Auto Loan CalculatorCar payment, total cost & interest Basis Point CalculatorBasis points to percent and dollar impact Biweekly Pay CalculatorBiweekly paycheck from annual salary Break-Even CalculatorBreak-even units for a business CAGR CalculatorCompound annual growth rate Cap Rate CalculatorReal estate capitalization rate Commission CalculatorCommission earned plus base pay Compound Interest CalculatorCompound growth, balance & interest earned Contribution Margin CalculatorContribution margin per unit CPM CalculatorCost per 1,000 ad impressions Credit Card Payoff CalculatorMonths to pay off a credit card Debt-to-Income CalculatorDebt-to-income ratio percentage Discount CalculatorSale price, amount saved & final cost Down Payment CalculatorDown payment amount and loan needed Future Value CalculatorFuture value of a lump sum Gross Profit Margin CalculatorGross profit margin percentage Hourly to Salary CalculatorHourly wage to annual salary Inflation CalculatorFuture cost adjusted for inflation Loan CalculatorMonthly payment for any loan Lottery Annuity CalculatorAnnuity jackpot split into yearly payments Lottery Tax CalculatorTake-home after federal & state lottery tax Margin CalculatorGross profit margin, profit & markup Markup CalculatorSelling price, profit & margin from markup Monthly Income CalculatorHourly wage to monthly, yearly & weekly Mortgage CalculatorMonthly payment, total cost & interest Net Profit Margin CalculatorNet profit margin percentage Overtime CalculatorOvertime pay, regular pay & total Pay Raise CalculatorNew salary after a percentage raise Payback Period CalculatorYears to recover an investment Percent Off CalculatorPrice after a percent-off discount Powerball Annuity CalculatorPowerball 30-year graduated payout Present Value CalculatorPresent value of a future amount Price Per Square Foot CalculatorPrice per square foot from price & area Return on Equity CalculatorReturn on equity (ROE) percentage ROAS CalculatorReturn on ad spend, ratio & ROI ROI CalculatorReturn on investment percentage & profit Rule of 72 CalculatorYears to double an investment Salary to Hourly CalculatorYearly salary to hourly, monthly & weekly Savings CalculatorSavings growth with monthly deposits Savings Goal CalculatorMonthly deposit to reach a goal Simple Interest CalculatorSimple interest and total amount due Time and a Half Calculator1.5× overtime rate and overtime pay Year Over Year Growth CalculatorYear-over-year percentage change

Health

BMI CalculatorBody Mass Index from weight & height BMR CalculatorBasal metabolic rate from body stats Body Fat CalculatorBody fat % by the US Navy method Body Surface Area CalculatorBody surface area from height & weight BRI CalculatorBody Roundness Index from waist & height Calorie Deficit CalculatorDaily calories and weekly weight loss Harris-Benedict CalculatorBMR via the Harris-Benedict equation Height CalculatorPredicted adult height from parents Ideal Weight CalculatorIdeal body weight from height & sex Lean Body Mass CalculatorLean body mass from weight & height Macro CalculatorProtein, carbs and fat from calories Maintenance Calorie CalculatorDaily maintenance calories (TDEE)Max Heart Rate CalculatorMaximum heart rate from your age Mean Arterial Pressure CalculatorMAP from systolic & diastolic Ovulation CalculatorOvulation day and fertile window Pregnancy Due Date CalculatorEstimated due date from last period RMR CalculatorResting metabolic rate (calories at rest)Target Heart Rate CalculatorTraining heart rate with Karvonen method Waist to Hip Ratio CalculatorWaist-to-hip ratio and risk band Water Intake CalculatorDaily water intake from body weight Weight Gain CalculatorCalories to gain weight per week

Construction

Asphalt CalculatorAsphalt tonnage from area & depth Baseboard CalculatorBaseboard linear feet for a room Beam Deflection CalculatorBeam deflection under a center load Board and Batten CalculatorBoards and battens for a wall Board Foot CalculatorBoard feet of lumber from dimensions Brick CalculatorBricks needed for wall area CFM CalculatorRequired CFM airflow for a room Concrete CalculatorConcrete in cubic yards for slabs Crushed Stone CalculatorCrushed stone in cubic yards & tons Deck Boards CalculatorDeck boards needed across width Drywall CalculatorDrywall sheets for wall area Elevation Grade CalculatorSlope grade percent and angle Fence CalculatorFence posts and sections needed Flooring CalculatorFlooring square footage plus waste GPM CalculatorFlow rate in gallons per minute Gravel CalculatorGravel needed in cubic yards & tons Mulch CalculatorMulch in cubic yards by depth Paint CalculatorGallons of paint for wall area Pipe Volume CalculatorWater volume inside a pipe Ramp CalculatorRamp length from rise and slope Rebar CalculatorRebar count & linear feet for a slab grid River Rock CalculatorRiver rock needed in cubic yards & tons Roof Pitch CalculatorRoof pitch angle, ratio & slope factor Roof Shingle CalculatorShingle bundles and squares needed Sand CalculatorSand needed in cubic yards & tons Sonotube CalculatorConcrete for a tube/column form Square Feet to Cubic Yards CalculatorSquare feet + depth to cubic yards Square Footage CalculatorArea in square feet, yards & acres Square Yard CalculatorArea in square yards from feet Stair CalculatorStair steps and riser height Stud CalculatorWall studs from length & spacing Tile CalculatorTiles needed with waste allowance

Math

Absolute Value CalculatorAbsolute value |x| of a number Arc Length CalculatorArc length from radius and angle Arccosine CalculatorArccosine (inverse cosine) in degrees Arcsine CalculatorArcsine (inverse sine) in degrees Arctangent CalculatorArctangent (inverse tangent) in degrees Area of a Circle CalculatorCircle area from the radius Average CalculatorMean of up to five numbers Circle Circumference CalculatorCircle circumference from the radius Circle Diameter CalculatorDiameter, circumference & area from radius Cone Volume CalculatorCone volume from radius and height Cosine CalculatorCosine of an angle, cos(θ)Cube Root CalculatorFind the cube root of any number Cube Volume CalculatorCube volume from the side length Cylinder Surface Area CalculatorCylinder surface area from radius and height Cylinder Volume CalculatorCylinder volume from radius & height Decimal to Fraction CalculatorConvert a decimal to a reduced fraction Degrees to Radians CalculatorConvert degrees to radians Distance Formula CalculatorDistance between two points Ellipse Area CalculatorEllipse area from its semi-axes Empirical Rule Calculator68-95-99.7 ranges from mean & SD Exponent CalculatorRaise a number to a power Factorial CalculatorCompute n factorial (n!)Fraction Simplifier CalculatorReduce a fraction to lowest terms Fraction to Decimal CalculatorConvert a fraction to a decimal GCF CalculatorGreatest common factor of two numbers Hexagon Area CalculatorRegular hexagon area from side length Hypotenuse CalculatorHypotenuse of a right triangle Law of Cosines CalculatorThird side from two sides and angle Law of Sines CalculatorFind a side using the law of sines LCM CalculatorLeast common multiple of two numbers Logarithm CalculatorLogarithm of a number in any base Long Division CalculatorQuotient and remainder of a division Mixed Number to Improper Fraction CalculatorMixed number to improper fraction Modulo CalculatorRemainder of a divided by b (a mod b)Nth Root CalculatorFind any root (square, cube, nth) of a number P-Value CalculatorP-value from a z-score Parallelogram Area CalculatorParallelogram area from base and height Pentagon Area CalculatorRegular pentagon area from side length Percent Difference CalculatorPercent difference between two values Percentage CalculatorWhat is X% of a number Percentage Change CalculatorPercent change between two values Percentage Increase CalculatorPercent increase between two values Perimeter CalculatorRectangle perimeter from sides Prime Factorization CalculatorBreak a number into prime factors Probability CalculatorProbability of an event Proportion CalculatorSolve a proportion a/b = c/x Pyramid Volume CalculatorPyramid volume from base and height Quadratic Formula CalculatorRoots of a quadratic equation Radians to Degrees CalculatorConvert radians to degrees Ratio CalculatorSimplify a ratio Reciprocal CalculatorFind the reciprocal (1 ÷ x) of a number Rectangle Area CalculatorRectangle area from length and width Rectangular Prism Volume CalculatorBox volume from length, width, height Regular Polygon Area CalculatorRegular polygon area from sides and length Right Triangle CalculatorRight triangle sides, area & angles Rounding CalculatorRound a number to N decimal places Scientific Notation CalculatorConvert a number to scientific notation Sector Area CalculatorSector area from radius and angle Semicircle Area CalculatorSemicircle area from the radius Sine CalculatorSine of an angle, sin(θ)Slope CalculatorSlope between two points Sphere Volume CalculatorSphere volume from the radius Square Root CalculatorSquare root of a number Standard Deviation CalculatorStandard deviation of a data set Surface Area of a Sphere CalculatorSphere surface area from the radius Tangent CalculatorTangent of an angle, tan(θ)Trapezoid Area CalculatorTrapezoid area from two bases Triangle Area CalculatorTriangle area from base and height Volume CalculatorVolume of a rectangular box Z-Score CalculatorStandard score from mean and SD

Conversion

Acres to Square Feet CalculatorConvert acres to square feet Bar to PSI CalculatorConvert bar to psi fast Calories to Joules CalculatorConvert calories to joules fast Celsius to Fahrenheit CalculatorConvert Celsius to Fahrenheit fast Celsius to Kelvin CalculatorConvert Celsius to Kelvin fast Centimeters to Meters CalculatorConvert centimeters to meters fast CM to Inches CalculatorConvert centimeters to inches fast Cubic Feet CalculatorCubic feet from length, width & height Cups to mL CalculatorConvert cups to milliliters Fahrenheit to Celsius CalculatorConvert Fahrenheit to Celsius fast Fahrenheit to Kelvin CalculatorConvert Fahrenheit to Kelvin fast Feet to Inches CalculatorConvert feet to inches fast Feet to Meters CalculatorConvert feet to meters fast Feet to Yards CalculatorConvert feet to yards fast Gallons to Liters CalculatorConvert US gallons to liters Gallons to Pounds CalculatorGallons to pounds by density Grams to Ounces CalculatorConvert grams to ounces fast Inches to CM CalculatorConvert inches to centimeters fast Inches to Feet CalculatorConvert inches to feet fast Joules to Calories CalculatorConvert joules to calories fast Kelvin to Celsius CalculatorConvert Kelvin to Celsius fast KG to LBS CalculatorConvert kilograms to pounds fast Kilometers to Meters CalculatorConvert kilometers to meters fast Kilowatts to Horsepower CalculatorConvert kilowatts to horsepower fast KM to Miles CalculatorConvert kilometers to miles fast KM/H to MPH CalculatorConvert km/h to mph fast Knots to MPH CalculatorConvert knots to mph fast LBS to KG CalculatorConvert pounds to kilograms fast Liters to Gallons CalculatorConvert liters to US gallons Meters to Centimeters CalculatorConvert meters to centimeters fast Meters to Feet CalculatorConvert meters to feet fast Meters to Kilometers CalculatorConvert meters to kilometers fast Miles to KM CalculatorConvert miles to kilometers fast mL to Cups CalculatorConvert milliliters to cups mL to oz CalculatorMillilitres to fluid ounces MPH to KM/H CalculatorConvert mph to km/h fast MPH to Knots CalculatorConvert mph to knots fast Nickels to Dollars CalculatorNickels to dollars Ounces to Grams CalculatorConvert ounces to grams fast oz to Cups CalculatorFluid ounces to cups oz to mL CalculatorFluid ounces to millilitres Pennies to Dollars CalculatorPennies to dollars Pixels to Inches CalculatorPixels to inches at a given DPI Pounds to Tons CalculatorConvert pounds to tons fast PSI to Bar CalculatorConvert psi to bar fast Quarts to Cups CalculatorQuarts to cups Square Feet to Acres CalculatorConvert square feet to acres Tbsp to Grams CalculatorTablespoons to grams by density Tons to Pounds CalculatorConvert tons to pounds fast Yards to Feet CalculatorConvert yards to feet fast

Time & Date

Add Time CalculatorAdd two durations together Age CalculatorExact age in years, months & days Age in Days CalculatorCount your age in days Birth Year CalculatorBirth year from current age Business Days CalculatorCount weekdays between two dates Date Plus Days CalculatorAdd days to a date Days Ago CalculatorThe date a number of days ago Days Between Dates CalculatorDays between two dates Days From Today CalculatorThe date a number of days ahead Days to Hours CalculatorConvert days into hours Days Until Date CalculatorDays from today to a date Decimal Hours to Time CalculatorTurn decimal hours into H:MM Hours to Days CalculatorConvert hours into days Hours to Minutes CalculatorConvert hours into minutes Hours Until CalculatorHours and minutes until a time Military Time ConverterConvert 24-hour time to AM/PM Minutes to Hours CalculatorConvert minutes into decimal hours Minutes to Seconds CalculatorConvert minutes into seconds Months to Days CalculatorConvert months into days Seconds to Hours CalculatorConvert seconds into hours Seconds to Minutes CalculatorConvert seconds into decimal minutes Sleep CalculatorSleep duration and 90-minute cycles Subtract Time CalculatorSubtract one duration from another Time Duration CalculatorDuration between two times Time to Decimal CalculatorConvert HH:MM to decimal hours Week Number CalculatorISO week number of a date Weeks Between Dates CalculatorCount the weeks between two dates Weeks to Days CalculatorConvert weeks into days Work Hours CalculatorDaily work hours minus your break Years to Days CalculatorConvert years into days

Timers & Clocks

10 Minute TimerFree 10 minute countdown timer 15 Minute TimerFree 15 minute timer online 20 Minute TimerFree 20 minute timer with alarm 30 Minute TimerFree 30 minute countdown timer 45 Minute TimerFree 45 minute timer online 5 Minute TimerFree 5 minute timer with alarm 60 Minute TimerFree 1 hour countdown timer Countdown TimerSet any countdown with alarm Pomodoro Timer25 minute focus and break cycles Online StopwatchOnline stopwatch with lap times

Sports

Batting Average CalculatorBaseball batting average Calories Burned Biking CalculatorCalories burned cycling Calories Burned Running CalculatorCalories from running Calories Burned Swimming CalculatorCalories from swimming Calories Burned Walking CalculatorCalories burned walking ERA CalculatorBaseball earned run average Free Throw Percentage CalculatorFree throw accuracy Marathon Time CalculatorMarathon finish time On-Base Percentage CalculatorBaseball on-base percentage One Rep Max CalculatorEstimate your 1-rep max Points Per Game CalculatorScoring average Running Pace CalculatorMin per mile pace Running Speed CalculatorMiles per hour speed Save Percentage CalculatorGoalie save percentage Slugging Percentage CalculatorBaseball SLG Steps to Calories CalculatorCalories burned from steps Steps to Miles CalculatorConvert steps to miles VO2 Max CalculatorEstimate VO2 max (Cooper test)Winning Percentage CalculatorWin percentage from W-L-T Yards Per Carry CalculatorRushing average

Food & Cooking

Coffee to Water Ratio CalculatorCoffee-to-water ratio brewing Cooked Rice CalculatorCooked rice yield from uncooked Cups to Grams CalculatorCups to grams by ingredient density Cups to Pounds CalculatorCups to pounds by density Grams to Cups CalculatorGrams to cups by ingredient density Grams to Tablespoons CalculatorGrams to tablespoons by density Grams to Teaspoons CalculatorGrams to teaspoons by density mL to Grams CalculatorMillilitres to grams by density Pounds to Cups CalculatorPounds to cups by density Rice to Water Ratio CalculatorRice-to-water ratio for cooking

Grades & GPA

Cumulative GPA CalculatorCombine prior GPA with this semester Final Grade CalculatorScore you need on the final exam GPA CalculatorSemester GPA from grade points and credits Grade Average CalculatorAverage several grades into one Grade CalculatorWeighted class grade from category scores Grade Curve CalculatorCurve a score so the top mark becomes 100 Grade Percentage CalculatorPercentage from points earned out of total Letter Grade CalculatorConvert a percentage to a letter and GPA points Semester Grade CalculatorCombine term grades and a final exam Test Grade CalculatorTest score from questions and number wrong

Statistics

Coefficient of Determination CalculatorR-squared from a correlation r Coefficient of Variation CalculatorRelative spread as a percent Confidence Interval CalculatorConfidence interval for a mean Correlation Coefficient CalculatorPearson r for paired data Covariance CalculatorHow two variables move together Expected Value CalculatorExpected value of outcomes Five Number Summary CalculatorMin, Q1, median, Q3 and max Geometric Mean CalculatorAverage growth or ratio Harmonic Mean CalculatorAverage of rates Interquartile Range CalculatorInterquartile range (IQR)Margin of Error CalculatorMargin of error for a proportion Mean Absolute Deviation CalculatorMean absolute deviation (MAD)Mean, Median, Mode CalculatorMean, median and mode at once Median CalculatorMedian of a data set Midrange CalculatorMidpoint of high and low Mode CalculatorMost frequent value in data Outlier CalculatorDetect outliers with the IQR rule Percentile CalculatorValue at a given percentile Percentile Rank CalculatorPercentile rank of a value Quartile CalculatorQ1, median and Q3 of a data set Range CalculatorRange of a data set Range Rule of Thumb CalculatorEstimate SD from the range Relative Frequency CalculatorFrequency as a percent of total Root Mean Square CalculatorRMS of a set of numbers Sample Size CalculatorSurvey sample size needed Signal to Noise Ratio CalculatorSNR from mean and standard deviation Skewness CalculatorPearson's skewness from mean, median, SD Standard Error CalculatorStandard error of the mean Variance CalculatorPopulation and sample variance Weighted Average CalculatorAverage weighted by importance

Physics

Acceleration CalculatorAcceleration from velocity change Centripetal Force CalculatorCentripetal force in circular motion Density CalculatorDensity from mass and volume Efficiency CalculatorEfficiency from output and input Force CalculatorForce from mass and acceleration Frequency CalculatorFrequency from period Gear Ratio CalculatorGear ratio from driven and driver teeth Horsepower CalculatorHorsepower from watts Ideal Gas Law CalculatorPressure from the ideal gas law Kinetic Energy CalculatorKinetic energy of a moving object Momentum CalculatorMomentum from mass and velocity Ohm's Law CalculatorVoltage from current and resistance Potential Energy CalculatorGravitational potential energy Power CalculatorElectrical power from voltage and current Pressure CalculatorPressure from force and area Torque CalculatorTorque from force and lever arm Velocity CalculatorSpeed from distance and time Wavelength CalculatorWavelength from speed and frequency Weight CalculatorWeight from mass and gravity Work CalculatorWork from force and distance

Chemistry

Average Atomic Mass CalculatorAverage atomic mass from two isotopes Boyle's Law CalculatorSolve P1V1 = P2V2 for the new gas volume Charles's Law CalculatorSolve V1/T1 = V2/T2 for the new gas volume Combined Gas Law CalculatorSolve P1V1/T1 = P2V2/T2 for the new volume Dilution CalculatorSolve C1V1 = C2V2 for final volume Gay-Lussac's Law CalculatorSolve P1/T1 = P2/T2 for the new gas pressure Half-Life CalculatorFind remaining amount after radioactive decay Mass Percent CalculatorMass percent of solute in solution Molality CalculatorFind molality from moles of solute and kg of solvent Molarity CalculatorMolar concentration from moles and volume Mole Fraction CalculatorFind the mole fraction of component A in a mixture Moles CalculatorMoles from mass and molar mass Normality CalculatorFind normality from equivalents and volume Parts Per Million CalculatorParts per million from mass and volume Percent Composition CalculatorFind an element's percent of a compound's mass Percent Error CalculatorPercent error from experimental and accepted value Percent Yield CalculatorPercent yield from actual and theoretical pH CalculatorpH and pOH from hydrogen ion concentration pH and pOH CalculatorConvert pH to pOH, [H+] and [OH-]Specific Heat CalculatorHeat energy from mass, specific heat, temp change

Pets & Garden

Aquarium Volume CalculatorFish tank gallons by size Cat Age CalculatorCat years to human years Cat Pregnancy CalculatorCat due date from mating Compost CalculatorBrowns needed for compost Dog Age CalculatorDog years to human years Dog Pregnancy CalculatorDog due date from breeding Plant Spacing CalculatorPlants that fit a bed Pond Volume CalculatorBackyard pond gallons Puppy Weight CalculatorEstimate adult dog weight Soil CalculatorGarden soil volume needed

Everyday Life

Bill Split CalculatorSplit a bill evenly with tip Download Time CalculatorHow long a file takes to download Electricity Cost CalculatorCost to run an appliance Fuel Economy CalculatorMiles per gallon from your fill-up Gas Cost CalculatorFuel cost for a trip Reading Time CalculatorHow long text takes to read Sales Tax CalculatorSales tax and total price Tip CalculatorTip amount, total and per-person split Unit Price CalculatorPrice per unit for value shopping Words Per Minute CalculatorReading or typing speed in WPM

Tech & Data

Base64 DecodeDecode Base64 back to text Base64 EncodeEncode text to Base64 Binary to Decimal CalculatorConvert binary numbers to decimal Binary to Text CalculatorConvert binary code to text Bits to Bytes CalculatorConvert bits to bytes Bytes to Bits CalculatorConvert bytes to bits Decimal to Binary CalculatorConvert decimal numbers to binary Decimal to Hex CalculatorConvert decimal numbers to hex Gigabytes to Megabytes CalculatorConvert gigabytes to megabytes Hex to Decimal CalculatorConvert hexadecimal to decimal Hex to RGB ConverterConvert hex colors to RGB HTML EncodeEscape HTML special characters JSON FormatterPretty-print and validate JSON Megabytes to Gigabytes CalculatorConvert megabytes to gigabytes Password Entropy CalculatorEstimate password strength in bits QR Code GeneratorTurn any text or link into a QR code RGB to Hex ConverterConvert RGB values to hex Text to Binary ConverterConvert text to binary code URL DecodeDecode percent-encoded URLs URL EncodePercent-encode text for URLs UUID GeneratorGenerate random UUID v4 values

Text Tools

Case ConverterConvert text to upper, lower, title case Character CounterCount characters with and without spaces Duplicate Line RemoverRemove duplicate lines, keep unique ones Lorem Ipsum GeneratorGenerate lorem ipsum placeholder paragraphs Remove Line BreaksStrip line breaks from pasted text Slug GeneratorTurn any title into a URL slug Text RepeaterRepeat text a set number of times Text ReverserReverse any text character by character Word CounterCount words, characters and reading time Word Frequency CounterFind the most frequent words in text

Random & Pickers

Bingo Number GeneratorDraw bingo balls from 1 to 75, never repeating Click CounterA big tally counter with clicks per second Coin FlipFlip a virtual coin, heads or tails Dice RollerRoll any number of dice with any sides Lottery Number GeneratorDraw unique lottery numbers Random Color GeneratorGenerate random hex colours Random Letter GeneratorPick random letters from A to Z Random List PickerPick a random item from your list Random Number GeneratorPick a random number in any range Random Password GeneratorGenerate a strong random password Random Team GeneratorSplit names into random teams Reaction Time TestMeasure how fast you react, in milliseconds Spin the WheelSpin a custom wheel to pick a winner Typing Speed TestTest your typing speed in words per minute Yes or No PickerGet a random yes or no answer

Color Tools

Color Contrast CheckerCheck WCAG colour contrast Color Palette GeneratorGenerate a 5-colour palette Color PickerPick a colour, get hex/RGB/HSL Color Tint & Shade GeneratorBuild tints and shades Complementary Color FinderFind the opposite colour CSS Gradient GeneratorBuild a CSS gradient Hex to RGB ConverterTurn a hex code into RGB HSL to Hex ConverterConvert HSL to a hex code Random Color Generator WheelSpin up a random colour RGB to HSL ConverterConvert RGB to HSL

Biology

Allele Frequency CalculatorAllele frequencies p and q from genotype counts Cell Doubling CalculatorCell count from generation (doubling) time Dihybrid Cross Calculator9:3:3:1 dihybrid phenotype counts Doubling Time CalculatorTime for a population to double GC Content CalculatorGC content percentage of a DNA sequence Hardy-Weinberg CalculatorGenotype frequencies from allele frequency p Magnification CalculatorTotal microscope magnification Population Growth CalculatorFuture population from growth rate over time Punnett Square CalculatorMonohybrid cross genotype and phenotype ratios Surface Area to Volume Ratio CalculatorSurface area to volume ratio of a sphere