Fitness Bundle
Optimize your training — BMI, body fat, heart rate zones, one-rep max, calorie burn, protein needs, TDEE, and macro tracking. All in one place.
Whether you lift weights, run, or do HIIT, this fitness bundle has every calculator you need. Track body composition with BMI and body fat tools, find your training heart rate zones, estimate one-rep max for strength programming, calculate calorie burn and protein needs, and plan your nutrition with macro and TDEE calculators.
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Tools in This Collection
BMI Calculator
Calculate your Body Mass Index with visual BMI scale
Use tool →Calorie Calculator
Calculate daily calories (TDEE/BMR) with macro breakdowns for your goals
Use tool →Running Pace Calculator
Calculate running pace, finish time, or distance with split times
Use tool →Body Fat Calculator
Estimate body fat percentage using the US Navy method and BMI formula
Use tool →Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity
Use tool →Macro Calculator
Calculate daily protein, carbs, and fat needs for your fitness goal
Use tool →Ideal Weight Calculator
Calculate ideal body weight using Devine, Robinson, Miller, and Hamwi formulas
Use tool →Protein Calculator
Calculate your optimal daily protein intake based on weight, activity level, and fitness goals
Use tool →Heart Rate Zone Calculator
Calculate your target heart rate zones for optimal training using the Karvonen formula
Use tool →One Rep Max Calculator
Calculate your one-rep max using 7 proven strength formulas
Use tool →TDEE Calculator
Calculate your Total Daily Energy Expenditure based on BMR, activity level, and body composition
Use tool →Calories Burned Calculator
Calculate calories burned across 95+ activities organized in 9 categories using MET values, with heart rate zone estimation and weekly planning
Use tool →Frequently Asked Questions
How do I find my one-rep max?▾
Enter the weight you lifted and the number of reps into our one-rep max calculator. It uses the Epley, Brzycki, and Lombardi formulas to estimate your 1RM for any exercise.
What heart rate zone should I train in?▾
Our heart rate zone calculator shows five zones from fat-burning (Zone 2) to max effort (Zone 5). Enter your age and resting heart rate for personalized zone ranges.
How much protein do I need to build muscle?▾
The protein calculator recommends daily protein intake based on your weight, activity level, and goals. Generally, 0.7-1g per pound of body weight is recommended for muscle building.
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