cc/rev to lpm Converter

Enter any 2 of the displacement, shaft speed, and flow rate into the calculator to determine the missing variable for a cc/rev to LPM conversion.

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cc/rev to LPM Formula

The following formula is used to calculate the ideal flow rate in liters per minute from a displacement in cubic centimeters per revolution and a shaft speed in revolutions per minute.

LPM = (CCR × RPM) / 1000

Variables:

• LPM is the flow rate in liters per minute
• CCR is the displacement in cubic centimeters per revolution (cc/rev)
• RPM is the rotational speed in revolutions per minute

To calculate the flow rate, multiply the displacement per revolution by the shaft speed, then divide by 1000 to convert cubic centimeters per minute into liters per minute.

The inverse forms of the equation are also useful:

• CCR = (LPM × 1000) / RPM
• RPM = (LPM × 1000) / CCR

What is a cc/rev to LPM Conversion?

A cc/rev to LPM conversion translates the volumetric displacement of a pump or motor into an ideal flow rate based on shaft speed. The cc/rev value tells you how much fluid volume is moved during each revolution, while L/min tells you how much volume passes in one minute. By combining the displacement with RPM, you can estimate the resulting ideal flow quickly and consistently.

This conversion is commonly used when reviewing hydraulic pump specifications, comparing equipment sizes, or estimating expected system flow. In actual operation, slip and inefficiencies may reduce real-world flow somewhat below the ideal value, but the formula remains a very useful first approximation.

How to Calculate cc/rev to LPM?

The following steps outline how to calculate liters per minute from cubic centimeters per revolution.

1. First, determine the displacement of the pump or motor in cc/rev.
2. Next, determine the shaft speed in RPM.
3. Multiply the displacement by the RPM value.
4. Divide the result by 1000 to convert the answer into liters per minute.
5. Check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Displacement (CCR) = 12 cc/rev

Rotational Speed (RPM) = 1800

Flow Rate (LPM) = (12 × 1800) / 1000 = 21.6 L/min

cc/rev to LPM Conversion Table

The table below shows example flow rates for a 10 cc/rev displacement at several common shaft speeds.

Because the relationship is linear, doubling the RPM doubles the flow, and doubling the displacement also doubles the flow. That makes cc/rev to LPM conversion one of the simplest and most practical calculations for hydraulic sizing and quick flow estimation.