Gym Calculator - BMI, BMR, TDEE, Macros & More
BMI, BMR/TDEE, Macros, Body Fat (Navy), 1RM, Heart Rate Zones, Water Intake.
Your files never leave your device — everything runs locally in your browser.
For information only, not medical advice. Formulas: Mifflin-St Jeor, US Navy, Epley, Brzycki.

What this tool does
All-in-one gym calculator with tabs for BMI, BMR + TDEE, Macros, Body Fat %, 1RM, Heart Rate Zones and Water Intake.
Uses Mifflin-St Jeor for BMR, US Navy method for body fat, Epley and Brzycki for 1RM.
For information only, not medical advice. Always consult a qualified professional.
How to use the Gym Calculator | Step by Step Guide
- Select tab
- Choose metric/imperial
- Enter values
- Get results instantly
Gym calculator se BMI, calories, macros aur 1RM check kar sakte hain. Ye sirf maloomat ke liye hai.
Features
- BMI
- BMR/TDEE (Mifflin-St Jeor)
- Macros by goal
- US Navy Body Fat
- 1RM Epley/Brzycki + % table
- HR Zones
- Water Intake
- Metric/Imperial
Tips
- Use accurate measurements
- Track over time
- Don't go below recommended minimums blindly
Frequently asked questions
Is the gym calculator free to use?
Yes — Gym Calculator has no usage cap, no sign-up and no watermark, and it is not a trial: the page is a static file on https://wafasmart.tech with no billing backend behind it.
Does anything get uploaded when I use gym calculator?
No. Gym Calculator reads your calculator straight into page memory, works on it locally and hands the result back as a download — there is no upload request to intercept, store or leak, and no log of what you processed.
Which BMR formula is used?
Mifflin-St Jeor equation as it is widely recommended.
Is this medical advice?
No. For information only, not medical advice.
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Your files never leave your device — everything runs locally in your browser.