Calorie Calculator
FreeCalculate daily calorie needs based on age, weight, height and activity level
Mifflin–St Jeor estimate.
About Calorie Calculator
Knowing roughly how many calories your body needs each day is the foundation of any nutrition or fitness plan. A calorie calculator estimates that number for you based on your age, weight, height, and activity level, giving a personalized daily target.
Enter your details and the tool estimates your daily calorie needs using established formulas, all in your browser. It is free, instant, and needs no signup. Use it as a starting point for managing weight, planning meals, or supporting a training goal. The figure is an estimate rather than a precise prescription, so adjust as you learn how your body responds, but it gives you a solid, personalized baseline to work from.
Common uses
- Estimating your daily calorie needs for weight management
- Setting a baseline for a diet or meal plan
- Adjusting intake based on your activity level
- Supporting a fitness or training goal with a calorie target
- Comparing maintenance calories against your current intake
How to use
- 1
Configure options
Set your preferences using the options panel below.
- 2
Click Generate
Click the process button to generate your result instantly.
- 3
Copy or download
Copy the result to clipboard or download it directly to your device.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
What factors does it use?
It estimates daily calorie needs based on your age, weight, height, and activity level.
Is the result exact?
It is a well-grounded estimate rather than an exact figure, so use it as a baseline and adjust as you learn how your body responds.
Can it help with weight goals?
Yes. Knowing your estimated needs gives you a starting point for eating to maintain, lose, or gain weight.
Can I use Calorie Calculator on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.