Workout Performance, Pace & Calorie Calculators
Calculate running splits, one-rep maximums, target heart rate zones, and daily protein targets to reach your fitness goals faster.
Training heart rate zones using the Karvonen method.
Pace per kilometer and speed from distance and time.
Estimate your maximum single lift from a multi-rep set.
Calories burned by common activities.
Daily protein target for your activity level.
Convert steps to kilometers, miles, time, and calories.
Predict 5K, 10K, half marathon, and marathon times from one result.
Estimate aerobic fitness from a 12 minute run.
Estimate body fat percentage from tape measurements.
Convert running speed to minutes per kilometer and mile.
Pace per 100 meters and projected times.
Watts per kilogram from power and body weight.
Target heart rate using heart rate reserve.
Four-week running plan with a steady weekly increase.
About these Fitness calculators
toolshere.biz.id has 14 free fitness calculators. Calculate running splits, one-rep maximums, target heart rate zones, and daily protein targets to reach your fitness goals faster. Popular topics include running pace, one-rep max (1rm), heart rate zones and protein intake. Every tool runs in your browser, so the numbers you type stay on your device.
Calculating target paces, 1-rep maximum lift estimates, and optimal protein intake. Most tools in this category rely on running pace & brzycki 1-repetition maximum (1rm); the Fitness calculation guide walks through a worked example step by step.
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