Cardio & Endurance Calculators
Heart rate zones, calories burned, VO2 max, and multi-sport endurance calculators.
Heart Rate Zone Calculator
Find your five training heart rate zones using the Karvonen (heart rate reserve) method.
Zone 2 Heart Rate Calculator
Find your Zone 2 aerobic base training range.
Max Heart Rate Calculator
Estimate your maximum heart rate using two common age-based formulas.
Target Heart Rate Calculator
Find your target training heart rate at any effort percentage.
Calories Burned Calculator
Estimate calories burned during running, walking, cycling, swimming, or lifting.
Walking Calories Calculator
Estimate calories burned walking at a given pace and duration.
VO2 Max Calculator
Estimate your VO2 max from a 1.5-mile time trial (Cooper test).
Steps to Miles Calculator
Convert your daily step count into miles walked or run.
Miles to Steps Calculator
Convert a target distance into an estimated step count.
Cycling FTP Calculator
Estimate your Functional Threshold Power from a 20-minute test.
Swim Pace Calculator
Calculate swim pace per 100 yards or meters from any distance and time.
Rowing Split Calculator
Calculate your rowing split (time per 500m) from any distance and time.
Vertical Jump Calculator
Calculate your vertical jump height from a standing reach and jump-touch reach.
Sweat Rate Calculator
Estimate your sweat rate to plan hydration for training or races.
Steps to Calories Calculator
Estimate calories burned from a given step count, weight, and pace.
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Heart Rate Zone Calculator Zone 2 Heart Rate Calculator Max Heart Rate Calculator Target Heart Rate Calculator Calories Burned Calculator Walking Calories Calculator VO2 Max Calculator Steps to Miles Calculator Miles to Steps Calculator Cycling FTP Calculator Swim Pace Calculator Rowing Split Calculator Vertical Jump Calculator Sweat Rate Calculator Steps to Calories CalculatorMilitary Fitness Tests
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