🏋️ Fitness & Workout Tools

Sixteen tools for training and tracking workouts — strength, running, cycling, swimming and nutrition calculators. Every one runs entirely in your browser.

🏋️ One Rep Max Calculator

Estimate your 1RM and a training percentage table.

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🏃 Running Pace Calculator

Solve pace, time or distance and project race splits.

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🔥 Calorie Burn Calculator

Estimate calories burned by activity, weight and duration.

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👣 Steps to Distance Converter

Convert a step count into distance walked.

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🫁 VO2 Max Estimator

Estimate VO2 max from a 12-minute Cooper test.

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🍽️ Macronutrient Calculator

Split daily calories into protein, carb and fat grams.

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🏋️‍♀️ Workout Volume Calculator

Total training volume across sets, reps and weight.

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⏲️ Workout Rest Timer

Live countdown timer for rest between sets.

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🏆 Wilks Score Calculator

Powerlifting strength score to compare lifters across bodyweights.

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🏁 Race Time Predictor

Predict your finish time at another distance using the Riegel formula.

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🏋️ Plate Loading Calculator

See exactly which plates to load on each side of the barbell.

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⏱️ Tabata Interval Timer

Live countdown timer for Tabata and HIIT interval workouts.

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🏊 Swim Pace Calculator

Pace per 100m/yd and average speed from distance and time.

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💪 Lean Body Mass Calculator

Fat mass, lean mass and FFMI from bodyweight, body fat % and height.

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🚴 FTP Cycling Calculator

Estimate FTP and training power zones from a 20-minute test.

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📋 Fitness Test Norms Reference

Push-up, sit-up, plank and mile run rating standards.

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