TDEE Calculator
The TDEE Calculator computes your Total Daily Energy Expenditure using the Mifflin-St Jeor BMR formula multiplied by an activity factor. TDEE is the foundation of any calorie-based diet plan.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
TDEE Calculator
Total Daily Energy Expenditure Calculator
📐 Formula & Method
Standard Formula
Uses established medical/scientific formulas.
📋 How to Use
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1
Enter the required values.
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Click Calculate to see results.
TDEE Calculator Guide
This calculator uses evidence-based formulas to provide accurate tdee calculator estimates.
Results are for informational purposes. Consult a healthcare professional for medical advice.
🔬 Methodology & Accuracy
Formula: Uses the standard mathematical formula shown in the Formula & Method section above. All computations run client-side in your browser — no data is sent to our servers.
Data sources: Tax bands, contribution limits and regulatory rates are taken from official US (IRS, SSA) and UK (HMRC, gov.uk) publications for the current tax year, and updated when bands change.
Last reviewed: June 2026 · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.