basic

Thermic Effect of Food TEF from Macros Calculator

TEF ≈ 25% protein, 8% carbs, 3% fat calories.

Calculates the Thermic Effect of Food (TEF) — energy expended during digestion and absorption — from macronutrient calorie inputs. Protein has the highest TEF.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

TEF = 0.25 × P_kcal + 0.08 × C_kcal + 0.03 × F_kcal

In depth

Calculates the Thermic Effect of Food (TEF) — energy expended during digestion and absorption — from macronutrient calorie inputs. Protein has the highest TEF.