TDEE Calculator (Total Daily Energy)
Maintenance energy from Mifflin–St Jeor × activity factor — with the honest ±15% error bar most TDEE tools hide.
TDEE prediction carries two stacked uncertainties — the BMR equation (±10%) and your activity-factor guess — so the realistic range matters more than the headline number. The gold-standard check: log intake honestly for 2–3 weeks of stable weight; that average is your true maintenance.
Formula
For general information only — not medical or training advice. Estimates vary between individuals; consult a qualified professional before changing your exercise or nutrition routine.
Maintenance energy from Mifflin–St Jeor × activity factor — with the honest ±15% error bar most TDEE tools hide. The TDEE Calculator (Total Daily Energy) is a free, private tdee calculator tool — every result computes instantly in your browser with no sign-up and no data upload.
About TDEE Calculator (Total Daily Energy)
TDEE prediction carries two stacked uncertainties — the BMR equation (±10%) and your activity-factor guess — so the realistic range matters more than the headline number. It applies TDEE = BMR (Mifflin–St Jeor) × activity factor. Use the TDEE Calculator (Total Daily Energy) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use TDEE Calculator (Total Daily Energy)
- 1Enter your details in the TDEE Calculator (Total Daily Energy) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use TDEE Calculator (Total Daily Energy)?
- ✓Instant tdee calculator result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Mifflin MD et al., Am J Clin Nutr 1990)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the TDEE Calculator (Total Daily Energy) work?+
TDEE prediction carries two stacked uncertainties — the BMR equation (±10%) and your activity-factor guess — so the realistic range matters more than the headline number. The calculation uses the formula: TDEE = BMR (Mifflin–St Jeor) × activity factor. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the TDEE Calculator (Total Daily Energy) accurate, and what is it based on?+
The method is traceable to authoritative sources, including Mifflin MD et al., Am J Clin Nutr 1990; FAO/WHO/UNU — Human Energy Requirements, 2001 (PAL factors). Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the TDEE Calculator (Total Daily Energy) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general fitness information only, not medical or training advice. Consult a professional before changing your routine.
What can I use the TDEE Calculator (Total Daily Energy) for?+
It's commonly used for tdee calculator, total daily energy expenditure, maintenance calories. Maintenance energy from Mifflin–St Jeor × activity factor — with the honest ±15% error bar most TDEE tools hide.
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