Strength
Workouts that tell you the next weight, track every set and show strength climbing, against your own past and real lifters.
Honest maths for your shape.
Free tools tell you where you are. bodymaths shows you, week by week, that you look better, feel stronger and have more energy. Without shame, guesswork or a trap.
Four questions. No signup. Your answers stay on this device.
(02) Your Body Forecast
When could you get there? Find out in 60 seconds.
Four quick questions, then a dated forecast built from your own numbers, with an honest range around it. No signup, nothing sent anywhere.
(03) Who it's for
One app. A plan that sounds like it was made for you.
Tell us your goal, age and life stage. The plan, the tone and the number we put first all change with it.
Example
(04) How it works
Four pillars. One plan that adjusts every week.
Shape
Photos, a tape measure and a habit-based Look-Good Score. Proof you can see, not just a number on the scale.
Fuel
Protein in palm-sized portions and calories as a range with a safe floor. Never a crash diet.
Recovery
Sleep, energy and rest days that count. A streak that forgives a bad week, because life happens.
(05) Free forever
Generous by default. Coaching when you want it.
Everything you need to start is free, and it stays free. Premium adds the part that does the thinking for you.
Free forever
- Every calculator, no signup
- Your Body Profile, Body Type and Look-Good Score
- Weight, waist and photo tracking
- A weekly 2-minute check-in
- A basic Body Forecast with a dated range
- Daily Glow score and protein-and-plate logging
- Streaks that forgive a bad week
Nothing here will ever move behind a paywall.
Early access: all of this is unlocked for now
Premium, when you want it
For when you would rather the plan did the thinking.
- A forecast that learns your real burn and gets sharper every week
- Plans that adjust themselves after each check-in
- A GLP-1 track that protects your muscle, and more tracks for your life stage
- "8 weeks ago vs now" photo and tape compares
- Your full Body Report, with a doctor-ready export
- Seasons, squads of three and monthly recaps
One honest price when it launches. No countdown timers, a real reminder before any trial ends, and one-tap cancel.
(06) Free tools
Start with the maths. No signup.
Every calculator shows an honest range, how we got it, and what to check next.
- 01TDEE Calculator
- 02Calorie Deficit Calculator
- 03Weight Loss Percentage Calculator
- 04BMR Calculator
- 05Macro Calculator
- 06Protein Calculator
- 07GLP-1 Protein Calculator
- 08Sleep Calculator
- 09One Rep Max Calculator
- 10Bench Press Calculator
- 11Navy Body Fat Calculator
- 12Body Fat Percentage Calculator
- 13Lean Body Mass Calculator
- 14Waist to Height Ratio Calculator
- 15Steps to Calories
- 16Calories Burned Walking Calculator
- 17Pace Calculator
- 18Heart Rate Zone Calculator
- 19Body Type Calculator
- 20Body Shape Calculator
- 21Attractiveness Test: Your Look-Good Score
- 22Body Recomposition Calculator
- 23Weight Gain Calculator
- 24CAVA Nutrition Calculator: Calories and Protein
- 25Sweetgreen Calorie Calculator: Calories and Protein
- 26Chick-fil-A Calorie Calculator: Calories and Protein
(07) Science and privacy
Built to be kind, private and honest.
The maths, in the open
Every number shows how we got it. These are the published methods behind them.
0ad pixels. Your health data is never sold or shared for ads.
On deviceEverything stays on your phone unless you turn sync on.
0red numbers on your body. Progress is never shown as failure.
7languages, including Arabic written right to left.
(08) Questions
The things people ask before they start.
Will lifting make me bulky?
No. Real size takes years of eating in a surplus and training for it. Two to four short sessions a week, at your normal food, is what builds the toned look: firmer shape, better posture and a smaller waist. Any early puffiness from new workouts is water, and it passes within a couple of weeks.
I'm on a GLP-1. Will I lose muscle?
Some of any fast loss can be muscle. Hitting your protein band and two or three short strength sessions a week are the two things most likely to protect it, and bodymaths tracks both. It never gives dose advice: that stays between you and your doctor.
I'm over 60. Is it too late?
No. Muscle responds to training at any age, and the first changes (getting up from a chair, stairs, carrying the shopping) often come within weeks. Plans use chair and balance moves, gentle progressions and larger text if you want it.
Do I have to count every calorie?
No. Protein in palm-sized portions and a simple plate guide take under a minute a day. Calories are shown as a range with a safe floor, never a strict number to hit.
I've tried apps before and quit.
Most people quit because logging takes too long, or one bad week breaks the streak. Daily input here takes under a minute, streaks forgive a bad week, and the plan adjusts instead of making you start over.
What is free, and what is Premium?
Every calculator, your Body Profile, tracking, the weekly check-in and a basic forecast are free forever. Premium is the coaching layer: a forecast that learns your real burn, plans that adjust themselves, and tracks for your life stage. During early access everything is unlocked.
Where does my data go?
It stays on your phone. Nothing is sold or shared for ads, and there are no ad pixels. Sync is optional and off unless you turn it on.
Your body, your maths, your pace.
Questions
Common questions
Is bodymaths free?
Yes. The calculators are free with no signup, and the app is free to start.
Is my data private?
Yes. Everything stays on your device unless you turn on sync, and your health data is never sold or used for ads.
Is bodymaths medical advice?
No. It is wellness information for adults 18 and over. If you have a medical condition, are pregnant or take medicine that affects your weight, follow the advice of your own doctor.
How accurate are the numbers?
Each result comes from a published formula and is shown as a range, because real bodies vary. Every calculator names its sources and the date it was last updated.
Do I need to download an app?
No. bodymaths runs in your browser on a phone or computer, and you can add it to your home screen.
Does bodymaths sell supplements?
No. bodymaths is a training and nutrition planning app and does not sell supplements or other products. This web address was used by an unrelated business in the past.