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The Minute Ventilation calculator computes the rate of air breathed by a person in a minute.
INSTRUCTIONS: Choose units and enter the following:
- (RR) Respiratory Rate
- (TV) Tidal Volume
Minute Ventilation (MV): The calculator return the rate in milliliters per minute. However, this can be automatically converted to compatible units via the pull-down menu.
The Math / Science
The minute ventilation is the amount of air a person breaths in a minute. The minute ventilation is calculated by the multiplication of the tidal volume and the respiratory rate. The normal tidal volume of a person is around 8- 10 ml per kg of weight. That is for a 90 kg person the tidal volume would be 900 ml. The tidal volume is actually the amount of air a person takes during each breath at rest. The normal respiratory rate is about 14- 18 breaths per minute. Hence, Minute ventilation = Tidal Volume X Respiratory rate.
The formula for minute ventilation is:
`"MV" = ("RR")*("TV")`
where:
- MV = minute ventilation
- RR = respiratory rate
- TV = tidal volume
