BMR & Daily Calorie Calculator
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor formula and instantly see daily calorie targets for maintenance, weight loss, and muscle gain.
Your Details
Basal Metabolic Rate (BMR)
Lose ~0.5 kg/wk
kcal/day
Maintenance
kcal/day
Gain ~0.5 kg/wk
kcal/day
Why you’ll love BMR & Daily Calorie Calculator
Instant & free
No signup, no paywall, no limits — BMR & Daily Calorie Calculator works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Accurate & clear
Built on the real formulas, with a breakdown you can actually trust.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
About BMR & Daily Calorie Calculator
This calculator uses the Mifflin-St Jeor formula, the gold standard for estimating your Basal Metabolic Rate (BMR)—the calories your body burns at rest. Simply enter your age, weight, height, and gender to discover your daily caloric baseline. Understanding your BMR is essential for making informed nutrition decisions and achieving your fitness goals.
Beyond your BMR, this tool instantly calculates your daily calorie needs at different activity levels. Get personalized targets for maintenance, weight loss, and muscle gain—helping you fine-tune your diet strategy. Whether you're counting macros or simply tracking intake, these science-backed numbers guide your nutrition planning and support sustainable health progress.
Popular uses
Frequently asked questions
BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest just to maintain basic functions like breathing, circulation, and cell production. Knowing your BMR is crucial because it forms the foundation for calculating your total daily calorie needs, whether you're maintaining weight, losing fat, or building muscle.
The Mifflin-St Jeor formula is considered the most accurate modern method for estimating BMR and is widely used by nutritionists and fitness professionals. While no formula is perfectly precise for every individual—factors like genetics, metabolism, and muscle composition vary—it provides a reliable starting point that can be adjusted based on real-world results.
Use BMR to understand your baseline calorie burn, but TDEE (Total Daily Energy Expenditure) for actual nutrition planning. TDEE factors in your activity level, giving you the calories you actually burn in a day. Eat near or slightly below your TDEE to maintain, lose, or gain weight appropriately.
BMR & Daily Calorie Calculator is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
It uses the standard formulas and shows its working, so you can verify every number. For big decisions, treat the result as a reliable estimate.
More Calculators
From our collection of 312 free tools.
People also use
We built this. We can build yours.
BMR & Daily Calorie Calculator is one of 200+ free tools from Workaholic Developers — a software & AI studio. Need a website, app, AI agent or automation? Let’s talk.
🇮🇳 Built by Workaholic Developers
We built this little toy in days. Imagine what we’ll build for you.
AI agents, web apps, automation, custom tools — designed and engineered fast, on whatever tech fits the job. If you can describe it, we can build it.