Fitness Calculators

One Rep Max Calculator

Calculate your one-rep max (1RM) for any lift using multiple proven formulas. Enter a weight and reps performed to find your true maximum.

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Running Pace Calculator

Calculate running pace, finish time, or distance. Get splits, race time predictions for 5K/10K/half/full marathon, and speed in km/h and mph.

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Calories Burned Calculator

Calculate how many calories you burn during any exercise. Uses MET values for accurate calorie expenditure estimates across 40+ activities.

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Daily Protein Intake Calculator

Calculate your optimal daily protein intake based on your weight, goal, and activity level. Science-backed recommendations for muscle building and fat loss.

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VO₂ Max Calculator

Estimate your VO₂ max — the gold standard measure of aerobic fitness — using your resting heart rate and age.

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Steps to Calories Calculator

Calculate how many calories you burn from daily steps. Enter your step count and body weight for an accurate calorie estimate.

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Cycling Speed & Power Calculator

Calculate cycling speed, power output, calories burned, and estimated segment times. Works for road, gravel, and mountain biking.

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Swimming Pace Calculator

Calculate swimming pace per 100m, total time for any distance, or calories burned. Works for pool and open water swimming.

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Marathon Pace Calculator

Calculate the pace you need to run to hit any marathon or half-marathon target time. Get per-km and per-mile splits.

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Cycling FTP Calculator

Estimate your Functional Threshold Power (FTP) and calculate cycling training zones. Based on a 20-minute or ramp test result.

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Running Race Split Calculator

Calculate even splits for any race distance and pace. Plan your race strategy with negative, even, or positive splits.

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Bench Press Strength Standards

Calculate your bench press strength level and how you compare to others of your weight. Find your lifting category from untrained to elite.

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VO₂ Max From Race Time Calculator

Estimate your VO₂ max from a recent race time. More accurate than the resting heart rate method for trained runners.

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Pace to Speed Converter

Convert running pace (min/km or min/mile) to speed (km/h or mph) and vice versa. Includes treadmill speed settings and race pace equivalents.

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Calories Burned by Activity Calculator

Calculate calories burned for 50+ activities based on MET values and body weight. More accurate than generic estimates.

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