Mechanical Gear Ratio, Output RPM & Torque Multiplier Calculator
Calculate mechanical gear ratio (GR), output rotational speed (RPM), and multiplied output torque (N·m) with 95% transmission efficiency for powertrains and gearboxes.
Calculator Inputs
Live Real-TimeTotal Gear Ratio (GR : 1)
Output Shaft Speed (RPM)
450 RPM
Output Delivered Torque
95 N·m
Torque Multiplier Gain
280%
Torque Multiplication: Gear reduction amplifies mechanical torque output proportionally.
Speed Reduction Profile
Detailed Calculation Breakdown
Calculation Methodology
Gear Ratio: GR = Driven Teeth (N2) / Driving Teeth (N1). Output Speed: RPM_out = RPM_in / GR. Output Torque: Torque_out = Torque_in * GR * 0.95 (efficiency).
Important Legal & Educational Disclaimer
This mechanical power transmission tool calculates kinematic gear train reduction metrics.
This calculator is designed for educational and informational purposes only based on public statutory frameworks. The outputs do not constitute binding financial, tax, or legal advice. We assume no liability for decisions made based on these estimations. Always verify with the relevant official authorities or a certified professional advisor.
Frequently Asked Questions
Related Calculators
Recommended tools and calculators tailored to your current calculation
Truck Towing Capacity, Payload & Tongue Weight Calculator (GVWR & GCWR)
Calculate maximum safe trailer towing capacity (kg & lbs), remaining truck bed payload, and recommended 10-15% hitch tongue weight based on manufacturer GVWR and GCWR ratings.
Tire Size, Rolling Diameter & Speedometer Error Offset Calculator
Calculate total tire rolling diameter (mm & inches), sidewall height, rolling circumference, revs per kilometer, and speedometer offset when upsizing wheel rims.
Engine Horsepower, Torque & RPM Physics Calculator (HP = Torque*RPM / 5252)
Calculate mechanical brake horsepower (HP), metric horsepower (PS), power in kilowatts (kW), and convert between N·m and lb-ft torque across dynamometer power curves.
Vehicle Braking Distance, Reaction Time & Total Stopping Calculator
Calculate total stopping distance in meters and feet, human perception-reaction distance, and mechanical tire braking distance across dry, wet, and icy road conditions.
Mechanical Torque, Force & Lever Arm Physics Calculator (τ = F × r × sin(θ))
Calculate rotational torque (τ) in Newton-meters (N·m) and Foot-Pounds (ft-lb), applied force, lever arm distance, and mechanical horsepower (HP) from RPM.
Belt & Pulley Drive Speed Ratio & Linear Velocity Calculator
Calculate driven pulley rotational speed (RPM), linear belt velocity (m/s & ft/min), and pulley diameter transmission ratio (D1*N1 = D2*N2) for industrial machine drives.
Engine Displacement, Cylinder Bore & Stroke Calculator (CC, Liters, CID)
Calculate total engine displacement in Cubic Centimeters (CC), Liters, and Cubic Inches (CID), individual cylinder volume, and Bore-to-Stroke geometry ratio.
Fuel Economy Converter Calculator (MPG US/UK, L/100km & km/L)
Convert fuel consumption ratings bi-directionally between Liters per 100km (L/100km), Kilometers per Liter (km/L), US MPG, and Imperial UK MPG, with CO2 emission estimates.