`RPM_2 = ( "T1" * RPM_1 )/ "T2" `

Enter a value for all fields

The 2 gear rpm equation calculates the RPMs of a second gear when the RPMs and number of teeth are known for the first gear and the number of teeth of the second gear is known,   

INSTRUCTIONS: Choose units and enter the following:

• (RPM₁) Rotation rate of gear 1
• (T₁) Teeth in gear 1
• (T₂) Teeth in gear 2

Rotation Rate of Gear 2: The calculator returns the rotation rate in revolutions per minute.  However this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The formula for the relationship between interlocked gears and their revolution speed is: 

`RPM_1 * T_1 = RPM_2 * T_2`

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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
• Second Gear Torque