38 Free Health Calculators & Tools

Everything you need to track, measure, and improve your health — all in one place

Filter:
🧬

BMR Calculator

Know your Basal Metabolic Rate — calories burned at complete rest. Essential foundation for any nutrition plan.

Body Metrics
📏

Body Fat Calculator

Estimate your body fat percentage using the US Navy method. Track your body composition over time.

Body Metrics
📐

Waist-to-Height Ratio

Calculate your waist-to-height ratio — considered more predictive of health risk than BMI alone.

Body Metrics
⚖️

Ideal Weight Calculator

Find your ideal body weight range based on height, frame size, and gender. Multiple formula options.

Body Metrics
🧍

Lean Body Mass Calculator

Calculate how much of your body weight is lean tissue (muscle, bone, organs) vs fat.

Body Metrics
🔥

Calorie Calculator

Determine daily calorie needs based on age, gender, height, weight, and activity level for goal-based nutrition.

Nutrition
🎯

TDEE Calculator

Total Daily Energy Expenditure — the total calories you burn daily including activity and exercise.

Nutrition
🥗

Macro Calculator

Calculate your optimal carbohydrate, protein, and fat intake based on your fitness goals.

Nutrition
💧

Water Intake Calculator

Calculate your optimal daily water intake based on body weight, climate, and activity level.

Nutrition
🍽️

Plate Portion Calculator

Visual guide to balanced meal portions using the plate method. Simple, no measuring required.

Nutrition
🧂

Sodium Intake Checker

Estimate your daily sodium consumption and compare against recommended limits for heart health.

Nutrition
🏃

Running Pace Calculator

Convert between pace, speed, and distance. Plan your runs and track your improvement over time.

Fitness
🏋️

1RM Calculator

Estimate your one-rep max for any exercise based on weight and reps. Essential for strength training programming.

Fitness
⏱️

Exercise Time Calculator

Calculate how long you need to exercise to burn a specific number of calories from different activities.

Fitness
🚴

VO2 Max Estimator

Estimate your aerobic fitness level using the Cooper test method. Key indicator of cardiovascular health.

Fitness
🔄

Target Heart Rate Calculator

Calculate age-predicted target heart rate ranges for different exercise intensities and training zones.

Fitness

Workout Calorie Burn Calculator

See how many calories different exercises burn per minute based on your body weight and intensity.

Fitness
💓

Heart Rate Zone Calculator

Find your optimal exercise heart rate zones for fat burn, cardio, aerobic, and anaerobic training.

Heart Health
❤️

Resting Heart Rate Calculator

Calculate your average resting heart rate and learn what it says about your cardiovascular fitness.

Heart Health
📊

Blood Pressure Category Checker

Understand your blood pressure readings and what the numbers mean for your heart health.

Heart Health
❤️‍🔥

Cardiovascular Risk Score

Assess key modifiable risk factors for heart disease and get actionable improvement suggestions.

Heart Health
😴

Sleep Calculator

Optimize your sleep schedule using 90-minute sleep cycles. Wake up refreshed, not groggy.

Sleep
😵

Sleep Debt Calculator

Calculate how much sleep you've lost over the week and estimate the recovery time needed.

Sleep

Sleep Quality Estimator

Evaluate your sleep patterns and get recommendations for improving sleep quality and consistency.

Sleep
☀️

Sleep Timing Optimizer

Find the best times to sleep and wake up based on your schedule and desired sleep duration.

Sleep
🧠

Stress Score Calculator

Assess your current perceived stress levels using the validated PSS-10 questionnaire framework.

Mental Health
😌

Mental Well-being Index

Quick assessment of your overall mental wellness across key dimensions including mood, resilience, and social connection.

Mental Health
🎯

Mindfulness Tracker

Calculate your recommended daily mindfulness practice duration based on your stress profile and schedule.

Mental Health
🩺

Health Risk Assessment

Review key health risk factors based on lifestyle, family history, and current health markers.

General Wellness
🥦

Daily Fruit & Veggie Counter

Track your fruit and vegetable intake against recommended daily servings for optimal nutrition.

General Wellness
🚶

Daily Step Goal Calculator

Set a realistic and effective daily step goal based on your current activity level and fitness goals.

General Wellness
📅

Age Calculator (Health Edition)

Calculate your exact age and explore health screenings recommended for your age group.

General Wellness
📉

Weight Goal Calculator

Set realistic weight goals with timeline estimates based on your calorie deficit or surplus.

General Wellness
🩸

Cholesterol Ratio Calculator

Calculate your total cholesterol to HDL ratio and understand what it means for your heart health.

General Wellness
🔋

Energy Level Optimizer

Identify factors affecting your daily energy and get personalized recommendations for sustained energy throughout the day.

General Wellness