Free health calculators and a private daily tracker

Estimate your daily calories, water, BMI and heart-rate range, then log water, steps, sleep and habits. No account, no sign-up. Your data stays on your device.

Open the free tracker Read the guides

Everything you need for daily health tracking

Six tools in one place, built around well-known formulas you can verify.

Calorie needs (BMR & TDEE)

Mifflin-St Jeor estimate of resting and total daily energy, adjusted for your activity level and goal.

Daily water target

A body-weight and activity-based hydration estimate, with one-tap logging and visual cups.

BMI check

WHO adult categories, with notes on what BMI can and cannot tell you.

Macronutrient split

Protein, carbohydrate and fat targets in grams based on your calorie goal.

Max heart rate

A quick age-based estimate to help you pace your workouts.

Daily tracker & trends

Log steps, sleep and habits, then see 7-day, 30-day and 1-year trends.

Transparent by design

We show how every number is produced so you can judge it for yourself.

Open formulas

Calorie estimates use the Mifflin-St Jeor equation; BMI follows WHO categories. Read the worked examples in our calorie guide.

Private by default

Your profile and logs are saved in your browser’s local storage, not on our servers. Export or delete your data any time.

Estimates, not diagnoses

Results are general estimates for wellness and education. They never replace advice from a healthcare professional.

Latest guides

Sourced, plain-language explanations behind the numbers.

Hydration

How Much Water Should You Drink a Day?

A practical guide to daily water needs: official intake figures, what changes your needs, how our calculator estimates a target, and signs you are drinking too little or too much.

Nutrition

BMR vs TDEE: How Many Calories Do You Need Each Day?

Understand BMR and TDEE, see the Mifflin-St Jeor equation with a worked example, and learn how to turn your estimate into a realistic daily calorie target.

Activity

How Many Steps Should You Take a Day?

Is 10,000 steps really the target? What research suggests about daily step counts, where the 10,000 figure came from, and how to build more movement into your day.

See all guides →

Frequently asked questions

Is Fitly Pulse free?

Yes. The calculators and tracker are free to use, and you do not need an account. The site may show advertising to help cover running costs.

Where is my data stored?

On your own device, in your browser’s local storage. We do not keep your health values on our servers. Clearing your browser data removes them, so use the built-in export to make a backup.

How accurate are the results?

They are estimates based on standard population formulas. Individual needs vary with muscle mass, genetics, health conditions and medication. Use the results as a starting point and adjust based on how you feel and on professional advice.

Which languages are supported?

The tracker is available in English, Khmer and Spanish, with more languages planned.

Can I use it instead of seeing a doctor?

No. Fitly Pulse provides general information only. If you have a medical condition, are pregnant, or take medication, speak to a qualified professional. See our Medical Disclaimer.