Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Chain Drive Calculator

Calculates the output speed of a chain drive system given sprocket tooth counts, input speed, and drive efficiency. Useful for mechanical designers selecting sprocket ratios for conveyors, motorcycles, and industrial machinery.

Drive Sprocket Teeth (teeth)

Driven Sprocket Teeth (teeth)

Input Speed (RPM)

Drive Efficiency (%)

Fill in the required fields to see your result.

Mechanical

Belt Drive Calculator

Calculate the driven pulley speed for a belt drive system by entering pulley diameters and the drive shaft RPM. Use it when sizing pulleys for motors, conveyor systems, or power tools.

Drive Pulley Diameter (inches)

Driven Pulley Diameter (inches)

Drive Speed (RPM)

Fill in the required fields to see your result.

Key differences

	Chain Drive Calculator	Belt Drive Calculator
Category	Mechanical	Mechanical
Inputs required	4	3
Result	Output Speed (RPM)	Driven Speed (RPM)
What it does	Calculates the output speed of a chain drive system given sprocket tooth counts, input speed, and drive efficiency. Useful for mechanical designers selecting sprocket ratios for conveyors, motorcycles, and industrial machinery.	Calculate the driven pulley speed for a belt drive system by entering pulley diameters and the drive shaft RPM. Use it when sizing pulleys for motors, conveyor systems, or power tools.