8 FOCUSED TOOLS
Gears, belts & motion calculators
Relate tooth counts, pitch dimensions and ideal motion ratios.
Choose the right calculation
Use compatible modules and effective pitch dimensions. No-slip and ideal-mesh assumptions omit losses and dynamics. A ratio calculation does not select a safe shaft, belt, bearing or gear rating.
Find a tool for your question
Gear Ratio Calculator
Find the tooth-count ratio of a simple gear pair.
Gear Output Speed Calculator
Find output rotational speed from an input speed and two gear tooth counts.
Gear Pitch Diameter Calculator
Find nominal pitch diameter from gear module and tooth count.
Gear Centre Distance Calculator
Estimate standard centre distance for two external gears of the same module.
Belt Drive Output Speed Calculator
Estimate speed ratio for a two-pulley belt drive.
Belt Linear Speed Calculator
Find belt linear speed from pulley pitch diameter and rotational speed.
Open Belt Length Calculator
Estimate the pitch length of an open two-pulley belt.
Lead Screw Linear Speed Calculator
Translate screw rotation into ideal axial travel rate.
Why is a lead-screw lead different from its pitch?
Pitch is the axial distance between thread forms. A multi-start screw advances by pitch times the number of starts per revolution.
Useful next steps in other categories
Density Calculator
Calculate average material density from mass and volume.
Torque Calculator
Find torque magnitude for a force at an angle to a lever arm.
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Estimate mass, stock usage and raw-material spending from geometry.
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Translate entered cutting parameters into nominal motion and time estimates.
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