Weir formula

The Weir formula is a formula used in indirect calorimetry, relating metabolic rate to oxygen consumption and carbon dioxide production. According to one source, it says:

where VO₂ is oxygen consumption in millilitres per minute and VCO₂ is the rate of carbon dioxide production in millilitres per minute. The formula can also be written for units of calories per minute:

Another source gives

This corresponds to:

Weir, J.B. de V., "New Methods for Calculating Metabolic Rate with Special Reference to Protein Metabolism," J. Physiol., 109: 1-9. (1949).

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