`RPM_D = ( D_d / D_D )* RPM_d `

Enter a value for all fields

The 2nd Pulley RPM calculator computes the RPMs of a second pulley based on the the RPMs and Diameter of the first pulley and the diameter of the second pulley. Belt length around two pulleys. 

INSTRUCTIONS: Choose units and enter the following:

• (RPM_d) RPMs of the first pulley
• (D_d) Diameter of the first pulley
• (D_D) Diameter of the second pulley

2nd Pulley RPMs (RPM_D): The calculator returns the rotational velocity of the second pulley in revolutions per minute (RPMs).  However, this can be automatically converted to compatible units via the pull-down menu.

Simple Machine Calculators

• Lever Beam Length 
• Leverage Lift Weight 
• Fulcrum Position 
• Belt Length 
• Belt Speed
• RPMs to Linear Velocity
• RPMs from linear velocity and diameter 
• 2nd Pulley RPMs
• 2nd Pulley Diameter 
• RPM of 4th pulley on three shafts 
• 2nd Gear RPM 
• Sum of Two Lengths