Know your numbers before you load the bar.
67 free calculators for strength, running, cardio, military fitness tests, and body and nutrition — 1RMs, paces, zones, scores, and macros.
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12 calculators
Strength
1RM, bench, squat, deadlift & more
7 calculators
Running
Pace, race time, treadmill & more
15 calculators
Cardio & Endurance
Heart rate zones, VO2 max, calories & more
9 calculators
Military Fitness Tests
Army, Air Force, Marine Corps & Navy tests
24 calculators
Body & Nutrition
BMI, TDEE, macros & body fat
5 quizzes
Finders
Running Plan, Military Test, Body Type Quiz, Workout Split, Fitness Level Quiz & more
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One-Rep Max Calculator
Estimate your true one-rep max from any weight and rep count, using four proven formulas.
Pace Calculator
Find your pace, time, or distance — enter any two and get the third, in miles or kilometers.
Heart Rate Zone Calculator
Find your five training heart rate zones using the Karvonen (heart rate reserve) method.
TDEE Calculator
Estimate your Total Daily Energy Expenditure from activity level.
Macro Calculator
Split a daily calorie target into protein, carbs, and fat grams.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy tape method.
Army Fitness Test (AFT) Calculator
Get a simplified score estimate across three key AFT events: deadlift, push-ups, and the 2-mile run.
VO2 Max Calculator
Estimate your VO2 max from a 1.5-mile time trial (Cooper test).
Not sure which one to pick? Take a quiz.
Running Plan Finder
Answer 7 quick questions about your goal race, mileage and timeline, and we'll point you to the right training…
Military Test Finder
Answer 6 quick questions about your strengths and training habits, and we'll show you which branch's fitness t…
Body Type Quiz
Answer 4 quick questions about your frame, metabolism and how you tend to gain or hold weight, and we'll point…
Workout Split Finder
Answer 4 quick questions about your schedule, goal and experience, and we'll point you to a weekly training sp…
Fitness Level Quiz
Answer 5 quick questions about your training consistency, strength, and cardio to see roughly where your overa…
All AthleteCalcs tools
Strength
One-Rep Max Calculator Bench Press Calculator Squat Max Calculator Deadlift Max Calculator Overhead Press Max Calculator RPE Calculator Plate Calculator Weekly Training Volume Calculator Wilks / DOTS Calculator Strength Standards Calculator 1RM Percentage Chart kg to lbs ConverterRunning
Pace Calculator 5K Pace Calculator 10K Pace Calculator Half Marathon Pace Calculator Marathon Pace Calculator Race Time Predictor Treadmill Pace ConverterCardio & Endurance
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
Army Fitness Test (AFT) Calculator AFT Event Score Lookup Army Body Fat Calculator Army Height and Weight Standards Air Force PT Test Calculator Marine Corps PFT Calculator Marine Corps CFT Calculator Navy PRT Calculator Military Fitness Test ComparisonBody & Nutrition
BMI Calculator TDEE Calculator Calorie Calculator Calorie Deficit Calculator Calorie Surplus Calculator BMR Calculator Macro Calculator Protein Calculator Weight Loss Calculator Body Fat Calculator Lean Body Mass Calculator Ideal Body Weight Calculator Water Intake Calculator FFMI Calculator Waist-to-Hip Ratio Calculator Waist-to-Height Ratio Calculator Bulking Calculator Cutting Calculator Keto Calculator Carb Calculator Carb Loading Calculator Weight Cut Calculator (Combat Sports) Height Converter (cm to ft/in) Body Shape CalculatorNo calculators match your search.