Sports Calculators

Sports calculators turn training inputs — a set completed in the gym, a test effort on the track, a swim split, a session's duration — into the numbers that guide smarter training: an estimated one-rep max, a VO2 max fitness score, a pace per hundred metres, calories burned, or a predicted finish time at a new distance. Their value is that they replace guesswork with an established formula, giving athletes a consistent baseline to plan loads against and to measure progress over a season. Lifters use a one-rep-max estimate to set working weights as a percentage of their maximum without the risk of testing a true max; runners predict a marathon time from a recent 10K and pace their long runs; swimmers track pace across sets; and anyone building a training plan uses calorie estimates to balance fuelling against output. The methods here are the ones coaches and sports scientists rely on — the Epley and Brzycki formulas for one-rep max, the Cooper and race-based estimates for VO2 max, and the standard pace and MET-based calorie relationships — and each tool shows its formula and a worked example so the logic is transparent. The essential caveat is that these are population-level estimates built from averages, not measured values for you specifically: a lifter's true max depends on technique and rep quality, VO2 max from a field test is an approximation of a lab measurement, and calorie burn varies with fitness, terrain and efficiency. Use the figures to plan, pace and track trends, not as precise physiological readings.