Calculate distance from RPM, diameter, and time or reverse-solve RPM, wheel size, or travel time with unit conversion, slip correction, and linear speed.

Assumes constant wheel or roller speed and diameter. Enter its RPM directly; gearing is not included.

Travel loss

Blank or0 means no loss. This is a fractional reduction from circumference travel, not a universal tire-slip definition.

RPM to Distance Formula

The following formula gives travel distance with no rolling loss, using wheel or roller RPM, wheel diameter and elapsed time in matching units. With the optional travel-loss setting, multiply this ideal distance by (1 − loss percentage / 100). This defines a fractional travel reduction, not a universal tire-slip convention.

Drpm = RPM × pi × WD × T
  • Where Drpm is the RPM to Distance (inches)
  • RPM is the total rotations per minute (rpm) 
  • WD is the wheel diameter (inches) 
  • T is the time (min) 

To calculate distance from RPM, multiply the RPM by pi times the wheel diameter times the time.

RPM to Distance Conversion Table (D = 26 in wheel, Time = 1 minute)
RPM Distance in 1 minute (m)
12.075
510.374
1020.747
1531.121
2041.494
2551.868
3062.241
4082.988
50103.735
60124.482
75155.603
90186.724
100207.471
120248.965
150311.206
180373.447
200414.942
240497.930
300622.412
360746.895
* Rounded to 3 decimals. Assumes wheel diameter D = 26 in and time T = 1.0 min. Formula: distance = RPM × π × D × 0.0254 (m).

How to Calculate RPM to Distance?

The following example problems outline how to calculate RPM to Distance.

Example Problem #1

  1. First, determine the total rotations per minute (rpm).
    • The total rotations per minute (rpm) is calculated to be 500.
  2. Next, determine the wheel diameter (inches).
    • The wheel diameter (inches) is measured to be 3.5.
  3. Next, determine the time (min).
    • The time (min) is found to be 1.5.
  4. Finally, calculate the RPM to Distance using the formula above: 

Drpm = RPM * pi*WD*T

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

Drpm = 500 * pi*3.5*1.5 = 8246.68 (inches)

Example Problem #2

The variables needed for this problem are provided below:

total rotations per minute (rpm) = 300

wheel diameter (inches) = 2

time (min) = 30

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. 

Drpm = RPM * pi*WD*T = (inches)