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+Tools available

11Free forever

8Pro AI tools

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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

5 tools

Food swap suggester

Don't like a food? Find alternatives that hit the same macro targets from our database.

Recipe analyzer ⭐ PRO

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

Grocery list generator ⭐ PRO

Based on your meal plan, AI generates a categorized shopping list with allergy filters.

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

Calorie burn estimator ⭐ PRO

AI estimates calories burned by exercise type, duration, and your stats — and adjusts your daily TDEE.

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

4 tools

Weekly check-in coach ⭐ PRO

Enter your current weight and AI analyzes progress, adjusts your targets, and delivers a personalized motivational message.

Goal setting assistant ⭐ PRO

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

Plateau breaker ⭐ PRO

Stuck on a plateau? Describe your situation and AI identifies what's stalling your progress and how to break through.

Mindset & motivation ⭐ PRO

Included in your weekly check-in — AI delivers a personalized motivational message based on your real progress.

In check-in coach

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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, plateau breaking, and personalized recommendations.

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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.