About TDEE Lab

TDEE Lab is a free nutrition calculator platform focused on maintenance calories, macro targets, protein ranges, calorie deficits, and BMR estimates.

The site is built to be calm and practical. It avoids medical claims, hype, fake credentials, and exaggerated promises. The calculators provide education-only estimates that you can compare with real-world trends.

Privacy-first by design

Calculator inputs run in your browser. Saved TDEE profiles use local browser storage on your device. TDEE Lab does not require an account and does not upload calculator inputs to a server.

Methodology

The primary TDEE calculator uses Mifflin-St Jeor for BMR, standard activity multipliers, and moderate goal adjustments. The editorial policy explains formula choices and update practices.

Start with the TDEE calculator or browse all tools.