Free Online Calculators

Professional calculators for health, fitness, finance, and more. Get instant, accurate results on any device.

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Health & Fitness

31 calculators

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BMI Calculator

Free BMI calculator to check your body mass index instantly. Get personalized health recommendations based on your height and weight. Accurate & easy to use.

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BMI Calculator for Women

Accurate BMI calculator specifically designed for women. Calculate your body mass index with gender-specific interpretations and health recommendations.

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BMI Calculator for Men

Accurate BMI calculator specifically designed for men. Calculate your body mass index with male-specific interpretations and health recommendations.

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Teen BMI Calculator

Free BMI calculator specifically designed for teenagers. Calculate body mass index with age-appropriate percentiles and get personalized health recommendations for teens.

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Athlete Body Composition Calculator

Comprehensive body composition calculator specifically designed for athletes. Calculate BMI, muscle mass, optimal weight ranges, and get performance-oriented recommendations.

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BMI Calculator for Muscular Men

Specialized BMI calculator for muscular & athletic men. Get accurate body composition assessment that accounts for high muscle mass. Avoid BMI misclassification.

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Free BMR calculator to estimate your basal metabolic rate instantly. Get personalized calorie recommendations based on your age, gender, weight, and height using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas. Accurate & easy to use.

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BMR Calculator for Women

Free BMR calculator specifically for women. Calculate your female basal metabolic rate instantly. Get personalized calorie recommendations based on your age, weight, and height using scientific formulas.

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BMR Calculator for Men

Free BMR calculator specifically for men. Calculate your male basal metabolic rate instantly. Get personalized calorie recommendations based on your age, weight, and height using scientific formulas.

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Katch-McArdle Calculator

Calculate your BMR using the Katch-McArdle formula that considers body fat percentage. The most accurate method for athletes and those with known body composition.

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Mifflin-St Jeor Calculator

Calculate your BMR using the Mifflin-St Jeor equation - the most accurate formula for basal metabolic rate. Get precise calorie estimates for weight management.

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Harris-Benedict Calculator

Calculate your BMR using the original Harris-Benedict equation from 1919. Discover the historical formula that started metabolic rate calculations.

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TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE) with precision. Get personalized calorie recommendations for weight loss, gain, or maintenance based on your activity level.

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TDEE Calculator for Men

Calculate your Total Daily Energy Expenditure (TDEE) specifically for men. Get personalized calorie recommendations for weight loss, muscle gain, or maintenance based on male metabolism and activity levels.

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TDEE Calculator for Women

Calculate your Total Daily Energy Expenditure (TDEE) specifically for women. Get accurate maintenance calories and goal-based targets using activity levels and women-optimized guidance.

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Daily Calorie Calculator

Calculate your daily calorie needs based on age, gender, activity level and weight goals. Get personalized nutrition recommendations and macro breakdowns.

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Macro Calculator

Calculate your optimal protein, carbs, and fat intake based on your goals. Free macronutrient calculator with personalized meal planning and recommendations.

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Protein Calculator

Evidence-based protein calculator to determine your optimal daily protein intake. Personalized recommendations based on age, activity level, and health goals.

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Body Fat Calculator

Free body fat calculator using Navy method and YMCA formula. Calculate your body fat percentage instantly with waist, neck, and hip measurements. Accurate & easy to use.

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Navy Body Fat Calculator

Accurate Navy body fat calculator using the official US Navy formula. Calculate your body fat percentage with waist, neck, and hip measurements. Military-grade accuracy.

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Ideal Weight Calculator

Calculate your ideal weight using multiple medical formulas. Get personalized recommendations based on height, gender, age, and body frame. Accurate & evidence-based.

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Weight Loss Calculator

Free weight loss calculator with safe timeline planning. Calculate calories, target weight, and realistic timelines based on medical research. Healthy approach only.

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Muscle Mass Calculator

Calculate your muscle mass using proven medical formulas. Get personalized training and nutrition recommendations based on your muscle mass analysis. Accurate & science-based.

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Water Intake Calculator

Free water intake calculator to determine your optimal daily water consumption. Get personalized hydration recommendations based on your weight, activity, and climate.

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Keto Macro Calculator

Calculate ketogenic diet macronutrients with medical safety warnings. Get personalized keto ratios with proper health supervision requirements.

Free Online Calculators

Health & Fitness

BMI Calculator

BMI Calculator for Women

BMI Calculator for Men

Teen BMI Calculator

Athlete Body Composition Calculator

BMI Calculator for Muscular Men

BMR Calculator

BMR Calculator for Women

BMR Calculator for Men

Katch-McArdle Calculator

Mifflin-St Jeor Calculator

Harris-Benedict Calculator

TDEE Calculator

TDEE Calculator for Men

TDEE Calculator for Women

Daily Calorie Calculator

Macro Calculator

Protein Calculator

Body Fat Calculator

Navy Body Fat Calculator

Ideal Weight Calculator

Weight Loss Calculator

Muscle Mass Calculator

Water Intake Calculator

Keto Macro Calculator

Period Calculator

Sleep Calculator

Meal Prep Calculator

Yoga Calorie Burn Calculator

Heart Rate Zone Calculator

Ovulation Tracker

Finance

Pay Stub Calculator

Mortgage Calculator

Check Pay Calculator

Va Loan Calculator

Loan Calculator

Equity Loan Calculator

Investment Calculator

Home Equity Line Calculator

Personal Loan Calculator

Tax Calculator Freelancers

Sales Tax Calculator

Refinancing Calculator

Home Loan Calculator

Retirement Calculator

Credit Score Simulator

Roth Ira Contribution Calculator

Student Loan Repayment Calculator

Dividend Reinvestment Calculator

Budget Planner Ai

Amortization Schedule Calculator

Annuity Payout Calculator

Net Worth Tracker

Debt Snowball Method Calculator

Sip Calculator

Cryptocurrency

Bitcoin Mining Calculator

Crypto Staking Calculator

Defi Yield Calculator

Asic Miner Roi Calculator

Crypto Converter Calculator

Nft Valuation Calculator

Ethereum Gas Fee Estimator

Crypto Tax Estimator

Wallet Profit Tracker

Blockchain Transaction Fee Calculator

Impermanent Loss Calculator

Yield Farming Optimizer

Work & Payroll

Time Calculator

Hours Calculator

Paycheck Calculator

Vacation Pay Calculator

Time Clock Calculator

Sick Leave Calculator

Wage Calculator California

Freelance Rate Calculator