Enter the compression ratio into the calculator to convert into pounds per square inch.

## Compression Ratio to PSI Formula

The following formula is used to convert a compression ratio to PSI.

PSI = X:Y*P

- Where PSI is the pounds per square inch
- X:Y is the compression ratio
- P is the pressure (typically standard atmospheric pressure (14.696)

## Compression Ratio to PSI Example

How to convert compression ratio to psi?

**First, determine the compression ratio.**Calculate or measure the compression ratio.

**Next, determine the pressure.**Calculate or measure the atmospheric pressure. This is 14.696 PSI at sea level.

**Finally, calculate the PSI.**Calculate the PSI using the equation above.

## FAQ

**How to do you convert a compression ratio to a PSI?**

Convert a compression ratio to PSI by multiplying the atmospheric pressure by the compression ratio.

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