RPM to Velocity Calculator

The RPM to Velocity Calculator is built for wheels, pulleys, discs, and rotating tools where RPM must be converted to edge speed. It converts rotations per minute into circumference traveled per second.

The calculator multiplies circumference by revolutions per second.

• Convert tire RPM to road speed.
• Estimate pulley belt speed.
• Check rotating tool surface speed.

For a rotating wheel or disc, rim velocity is v = 2*pi*r*rpm / 60

Use the formula panel beside the calculator to keep the variables visible while you enter values.

• r = radius
• rpm = revolutions per minute
• v = linear rim velocity

Enter rotational speed in rpm and radius in meters. The calculator keeps the fields focused on this specific problem so you do not have to adapt a generic velocity form by hand.

After you press Calculate, the result panel shows linear velocity, angular velocity, and speed conversions. Reset clears the example values so you can start a fresh scenario.

• Use consistent real-world measurements for the selected scenario.
• Check that time, area, mass, or temperature values are positive where the formula requires them.
• Read the step-by-step substitution before using the final number in homework, design notes, or planning.

At 1200 rpm with a 0.25 m radius, rim speed is about 31.42 m/s.

A point farther from the center travels a longer path per revolution, so radius directly increases linear speed.

The extra output rows give practical companion values so the answer is easier to compare against common units or planning targets.

The radius is measured from the rotation axis to the point of interest and there is no slip between rotation and linear travel when used for wheels or belts.

For professional engineering, safety, aviation, ballistics, medical, or project-management decisions, treat the result as a calculation aid and verify it against the standards used in your field.