Free Fitness Calculators
Seven tools built on published, peer-reviewed formulas — not guesswork. No sign-up, no email, nothing stored. Work out what your body actually needs, then buy only what fills the gap.
Published formulas
Mifflin-St Jeor, Epley, Tanaka, WHO
Indian cut-offs
ICMR BMI bands, not just WHO
Nothing stored
Runs in your browser, no account
Free expert reading
Send us your result on WhatsApp
Pick Your Calculator
How To Use These
Find your baseline
Run BMI and WHR to see where you are starting. WHR matters more than BMI if you lift.
Set your calories
BMR gives maintenance. Weight Gain turns a target and a deadline into a daily number.
Fix your protein
Protein tells you the daily grams and how much of it realistically has to come from a shake.
Program the work
1RM sets your lifting percentages. HR Zones set your cardio. Then train the plan.
Questions
Answered
Send any result to our team and we will read it back to you with a plan — free, no purchase needed.
Get a free readingHow accurate are these?
Each uses a formula published in peer-reviewed literature. Mifflin-St Jeor for metabolic rate is the most accurate general-population equation in validation studies, typically within 10% for most people. The 1RM calculator averages four formulas because each drifts in a different rep range. They are planning estimates, not medical diagnoses.
Why does your BMI calculator show two categories?
Because South Asians carry more visceral fat at the same BMI than the populations the WHO thresholds were built on. The ICMR recommends lower cut-offs for India — overweight starts at 23, not 25. We show both so you can see where you land on each.
Do you store what I enter?
No. Everything runs in your browser. Nothing is sent to a server, nothing is saved, and there is no account to create.
Can I use these if I have a medical condition?
Treat the results as general guidance only. If you are pregnant, managing diabetes, kidney or heart conditions, or recovering from injury, talk to a doctor or registered dietitian before changing your intake or training load.
Which one should I start with?
The Protein Calculator. Protein intake is the single variable that most people get wrong, and fixing it changes results faster than anything else you can buy.
Got Your Numbers?
Now Fuel Them
Tell us your targets on WhatsApp and we will build a stack that hits them — within your budget.