⚙️ Mechanical Design  ·  Gear Systems

Gear Ratio Calculator

Simple 2-gear & Multi-Stage compound systems — speed, torque & direction

🔵 Driver Gear (Input)
T
RPM
N·m
🟠 Driven Gear (Output)
T
mm
%
⚙️ Live Visualization
Ratio: 3.000
3.000
Gear Ratio
500.0
Output RPM
294.0
Output Torque N·m
3.00×
Mech. Advantage
0.333×
Speed Ratio
98.0%
Efficiency
📊 Detailed Analysis
ParameterValueType
📐 Formulas Used
Key Equations Loading…
📚 Recommended Book
RS
KHURMI
──
MACHINE
DESIGN
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Theory of Machines & Machine Design
by R.S. Khurmi & J.K. Gupta
★★★★★ (4.5/5 · 2000+ reviews)
The go-to reference for mechanical engineers. Covers gears, shafts, springs, belts, bearings & more — perfectly aligned with the calculators on this page.
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