TDEE Calculator
Get your TDEE calculated instantly, for free.
The TDEE Calculator takes your age, weight, height and activity level and instantly calculates your Total Daily Energy Expenditure. No signup, no spreadsheet formulas — just enter your numbers and get an accurate result.
Manual calculations are easy to get wrong, especially with percentages, dates or fees involving multiple steps. This calculator handles the math precisely so you can focus on the decision the number is informing.
How to Use the TDEE Calculator
- Enter the required values
- Click Calculate
- Review your result instantly
Best Practices
- Double-check input units (currency, dates, percentages) match what's expected
- Use the result as a planning estimate — confirm exact figures with official statements where money is involved
- Bookmark this tool for quick repeated calculations
This tool is free to use with no signup required.
Frequently Asked Questions
What does TDEE stand for?
Total Daily Energy Expenditure — the total number of calories your body burns in a day, including your basal metabolic rate plus activity, digestion, and exercise.
How is TDEE different from BMR?
BMR (Basal Metabolic Rate) is calories burned at complete rest; TDEE adds your activity level on top of BMR to estimate total daily calorie burn.
How accurate is a TDEE calculator?
It provides a reasonable estimate based on established formulas (like Mifflin-St Jeor) and your reported activity level, but actual metabolism varies between individuals — use it as a starting point and adjust based on real-world results.
Should I eat at my TDEE, above it, or below it?
Eating at TDEE maintains current weight, eating below it (a calorie deficit) supports weight loss, and eating above it (a calorie surplus) supports weight gain — the right choice depends on your specific goals.
Is this tool free to use?
Yes, completely free with no signup, no limits and no software to install.
Is my data saved anywhere?
No — calculations run in your browser and the values you enter are not stored or sent to a server.
How do I choose my activity level accurately?
Be honest about your typical week, not your best week — overestimating activity level is a common mistake that leads to inaccurate calorie targets and stalled progress.
Does TDEE change as I lose or gain weight?
Yes — TDEE is based partly on body weight, so it decreases as you lose weight and increases as you gain, which is why recalculating periodically is recommended during a diet or bulk.
Is TDEE useful for muscle building goals?
Yes — a modest calorie surplus above TDEE, combined with resistance training, is the general approach used for muscle gain, though individual needs vary.
Is this medical or nutritional advice?
No — this provides a general estimate for informational purposes. Consult a doctor or registered dietitian for personalized guidance, especially if you have health conditions.
The TDEE Calculator estimates your Total Daily Energy Expenditure — the full number of calories your body burns in a day across rest, digestion, and physical activity combined.
TDEE vs. BMR: What's the Actual Difference
BMR only accounts for the calories burned at complete rest — keeping your heart beating, lungs breathing, and organs functioning. TDEE builds on top of that by adding everything else: digesting food (the thermic effect of food), incidental daily movement (walking, fidgeting, standing), and any deliberate exercise. TDEE is the number that actually matters for setting a calorie target, since BMR alone dramatically underestimates real-world energy needs for anyone who isn't completely sedentary.
How the Activity Multiplier Works
TDEE is calculated by taking BMR and multiplying it by an activity factor, typically ranging from around 1.2 (sedentary) to 1.9 (extremely active, physical job plus intense daily training). Small differences in which multiplier you select produce meaningfully different results, which is why honestly assessing your typical week — not your best or most aspirational week — produces a more useful number.
How TDEE Is Actually Used
- Weight maintenance — eating at your TDEE keeps weight roughly stable over time.
- Weight loss — eating consistently below TDEE creates the calorie deficit needed for fat loss.
- Weight/muscle gain — eating above TDEE provides the surplus needed to support gaining weight, ideally combined with resistance training for the gain to be primarily muscle rather than fat.
As with any calorie estimate, treat the result as a starting point to adjust based on real, tracked results over several weeks — not a fixed, one-time number.
