How to plan a race pace you can hold
Work backwards from the target finish. The Running Pace Calculator converts a goal time and distance into a per-mile or per-kilometre pace, which is the number you actually run to. The Marathon Time Calculator projects a full or half marathon finish from a shorter recent race, which is more honest than projecting from a good training day.
Check that pace against your fitness before committing. The VO2 Max Calculator uses the Cooper 12-minute test as a rough aerobic benchmark, and the Running Speed Calculator restates pace as speed if you train on a treadmill.
What calorie-burn estimates are good for
They are useful for comparing activities and rough weekly planning, and unreliable as a precise ledger. The Calories Burned Running Calculator, Calories Burned Biking Calculator and Calories Burned Walking Calculator all use MET values, which are population averages — your real burn depends on efficiency, terrain and fitness.
Two practical notes. Part of what you burn exercising would have been burned anyway at rest, so the net figure is lower than the gross. And step-based estimates like the Steps to Calories Calculator or Steps to Miles Calculator depend heavily on stride length, so set yours rather than accepting a default.
When to use one-rep max and team statistics
The One Rep Max Calculator estimates your maximum from a submaximal set, which is safer than actually testing a true max and accurate enough for programming percentages. It gets less reliable above about eight reps, where endurance starts dominating strength.
For team sports, the standard stats are all ratios and each answers a specific question. The Batting Average Calculator and On-Base Percentage Calculator measure different things — reaching base by any means versus hitting — and OBP correlates better with runs scored. The Winning Percentage Calculator handles ties correctly, which is where hand calculations usually go wrong.
Frequently asked questions
- How do I calculate my running pace?
- Divide your total time by the distance covered to get minutes per mile or per kilometre. A 50 minute 10K is 5:00 per kilometre.
- How accurate are calories burned calculators?
- They typically fall within 10-20% for steady activities like running and walking, and are less reliable for weights and interval work. They use average metabolic equivalents, so individual efficiency and fitness shift the real figure.
- What is a good VO2 max for my age?
- For untrained adults, roughly 35-45 ml/kg/min for men and 27-38 for women in their thirties, declining about 10% per decade after that. Trained endurance athletes often exceed 60.
- How do you estimate a one-rep max?
- Use a set taken close to failure and apply a formula such as Epley or Brzycki — for example, weight × (1 + reps ÷ 30). Accuracy is best between three and six reps and degrades beyond eight.
- How many steps are in a mile?
- Around 2,000 for an average adult walking, though it ranges from roughly 1,800 to 2,400 depending on height and stride. Running covers a mile in fewer steps because stride length increases.