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 your preferred units and enter the following:

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

2nd Pulley RPMs: The calculator computes the rpms (RPM_D) of the second pulley.

Simple Machine Calculators

• Lever Beam Length 
• Leverage Lift Weight 
• Fulcrum Position 
• Belt Length 
• Belt Speed.
• Pulley RPMs 
• 2nd Pulley RPMs
• 2nd Pulley Diameter 
• RPM of 4th pulley on three shafts 
• 2nd Gear RPM 
• Sum of Two Lengths