Enter the air consumed during dive, time of dive, and the total pressure at the average depth.

## Sac Rate Formula

The following formula is used to calculate the surface air consumption rate.

SAC Rate = ACD / DT / P

- Where SAC rate is the surface air consumption per minute (psi/min)
- ACD is the total air consumed during a dive (psi)
- DT is the total dive time (min)
- P is the total pressure at depth (atm)

To calculate the SAC rate, divide the air consumed by the dive time and then again by the total pressure at depth.

## SAC Rate Definition

SAC Rate is short for surface air consumption rate. It is a measure of the total air consumption rate of a scuba diver while diving at a specific depth.

## What is a good SAC Rate?

An experienced diver will typically have a sac rate of fewer than 18 liters per minute

## SAC Rate Example

How to calculate a SAC Rate?

**First, determine the total air consumed during a dive.**Measure the total air consumed during the dive.

**Next, determine the total dive time.**Measure the total dive time in minutes.

**Next, determine the pressure at dive depth.**Determine the pressure.

**Finally, calculate the sac rate.**Calculate the sac rate using the equation above.

## FAQ

**What is a SAC rate?**

A sac rate is a measure of the surface air consumption rate during a scuba dive.