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Resting Daily Energy Expenditure

It is possible to determine your resting daily energy expenditure (RDEE) using your weight, height and age. This method was validated by Harris and Benedict (1919) [1] using closed-circuit spirometry.

RDEE Calculator

To obtain an estimate of your RDEE, please enter your height, age, weight and gender and then select the 'Calculate RRDE' button.

Height cm   Age   Weight Kg   Gender
RDEE Calories      

The Algorithms

For Males

  • RDEE = 66 + (13.7 x weight) + (5 x height) - (6.8 x age)

For Females

  • RDEE = 655 + (9.6 x weight) + (1.85 x height) - (4.7 x age)

Free Calculator

  • RDEE Calculator - a free Microsoft Excel spreadsheet that you can download and use on your computer.


  1. HARRIS, J.A. and BENEDICT, F. G. (1919) A biometric study of basal metabolism in man. Washington DC: Carnegie Institute

Page Reference

If you quote information from this page in your work, then the reference for this page is:

  • MACKENZIE, B. (2004) Resting Daily Energy Expenditure [WWW] Available from: [Accessed