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Calculate one- and two-minute heart-rate recovery from observed values with exact arithmetic, protocol limits, and no unsupported diagnostic label.

Calculate workout volume load from sets, completed reps, external load, and an optional bodyweight fraction, with unit conversion and comparison…

Calculate coupled acute-to-chronic workload ratio with visible four-week arithmetic, prior-week comparison, and no unsupported injury-risk label.

Compare Tanaka and Fox age-predicted maximum heart rates, see the formula spread, and understand why an estimate is not a…

Predict a target race time from a known result using the visible Riegel exponent, with pace, linear cross-check, fatigue penalty,…

Calculate average running pace per kilometer and mile plus speed from distance and elapsed time, with exact unit conversion and…

Convert steps into distance, moving time, and a transparent walking or running calorie estimate using stride, speed, body weight, and…

Estimate activity calories from body weight, duration, and visible 2024 Compendium MET values. Includes units, method, examples, and limitations.

Estimate activity calories from body weight, duration, and visible 2024 Compendium MET values. Includes units, method, examples, and limitations.

Estimate activity calories from body weight, duration, and visible 2024 Compendium MET values. Includes units, method, examples, and limitations.