Free · No sign-up · Expert reviewed

A better body starts
with better data.

Science-backed calculators, AI-powered meal plans, and personalized coaching tools. Free forever.

20+Free tools

100%No sign-up

ExpertReviewed formulas

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Body metrics

4 tools

Calculate your body mass index and healthy weight range for your height.

Ideal weight calculator

Find your ideal weight range using four evidence-based formulas.

Body fat % estimator

Estimate body fat percentage using the Navy Method with simple measurements.

Water intake calculator

Get your daily hydration target based on weight and activity level.

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Nutrition & calories

4 tools

TDEE calculator

Find your total daily energy expenditure based on age, size, and activity level.

Macro calculator

Get your daily protein, carb, and fat targets with rate selector and macro sliders.

Calculate your basal metabolic rate — the calories your body burns at complete rest.

Calorie deficit calculator

Calculate your deficit and estimated time to reach your goal weight.

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Food & meal tools

4 tools

Recipe analyzer ⭐ PRO

Paste any recipe and get a full macro breakdown per serving instantly.

Food swap suggester ⭐ PRO

Don't like a food? AI finds alternatives that hit the same macro targets.

Grocery list generator ⭐ PRO

Based on your meal plan, AI generates a categorized weekly shopping list.

Restaurant menu helper ⭐ PRO

Paste a menu and AI finds the best options for your macro targets.

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Fitness tools

2 tools

Exercise calorie burn estimator

Enter exercise type, duration, and weight to see calories burned and TDEE impact.

Workout plan generator ⭐ PRO

AI creates a personalized weekly workout split based on your goal, schedule, and equipment.

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AI coaching tools

2 tools

Weekly check-in coach ⭐ PRO

Enter your current weight and AI compares progress, adjusts your calorie target, and gives personalized feedback.

Goal setting assistant ⭐ PRO

Describe your situation and AI sets realistic SMART goals with a week-by-week timeline.

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Pregnancy

2 tools

Due date calculator

Calculate your estimated due date and trimester milestones from LMP or conception date.

Pregnancy weight gain

Get recommended weight gain by trimester based on your pre-pregnancy BMI.

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Why BetterBodySuite?

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Science-backed formulas

Every calculator uses established medical and nutritional formulas — Mifflin-St Jeor, Navy Method, Hamwi, and more.

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No data collected

All calculations happen in your browser. We never store, sell, or share any of your health information.

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AI-powered Pro tools

Upgrade to Pro for GPT-powered meal plans, coaching, and personalized recommendations — unique every time.

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Expert reviewed

All formulas reviewed by Daniel J. D'Alessandro, CPT & Certified Nutrition Coach — so you can trust every number.

⚕️ Medical Disclaimer: BetterBodySuite provides general wellness information only. These tools are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making health decisions. Results are estimates based on population-level formulas and may not reflect individual variation.