Fitness Calculators

Train smarter. Plan cardio sessions, strength cycles, and recovery windows using dependable, data-driven fitness tools.

Convert finish times to splits, plan interval sessions, and predict race paces.

Estimate aerobic capacity from race results or field tests to benchmark progress.

Translate working sets into projected maxes and create strength training percentages.

Balance cadence, gearing, grade, and power output for road and indoor sessions.

Structure sets, reps, tempo, and rest intervals for strength or conditioning blocks.

Map aerobic, tempo, and threshold zones from max heart rate or lab data.

Calculate daily energy expenditure with activity multipliers and adjust for goals.

Use the Karvonen method to personalize intensity targets from resting HR.