Enter the equipment speed (RPM) and the engine speed (RPM) into the PTO Ratio Calculator. The calculator will evaluate and display the PTO Ratio.

## PTO Ratio Formula

The following formula is used to calculate the PTO Ratio.

PTOR = EQ / ES
• Where PTOR is the PTO Ratio
• EQ is the equipment speed (RPM)
• ES is the engine speed (RPM)

To calculate a PTO ratio, divide the equipment speed by the engine speed.

## How to Calculate PTO Ratio?

The following example problems outline how to calculate PTO Ratio.

Example Problem #1:

1. First, determine the equipment speed (RPM).
• The equipment speed (RPM) is given as: 500.
2. Next, determine the engine speed (RPM).
• The engine speed (RPM) is provided as: 8000.
3. Finally, calculate the PTO Ratio using the equation above:

PTOR = EQ / ES * 100

The values given above are inserted into the equation below and the solution is calculated:

PTOR = 500 / 8000 * 100 = 6.25 (%)

Example Problem #2:

For this problem, the variables required are provided below:

equipment speed (RPM) = 600

engine speed (RPM) = 1000