T

MECHANICS

Torque Calculator

Calculate torque from applied force and perpendicular radius.

Force N Radius m

FORMULA T = F × r

Calculate Torque

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σ

STRENGTH OF MATERIALS

Normal Stress Calculator

Calculate normal stress from applied force and cross-sectional area.

Force N Area mm²

FORMULA σ = F / A

Calculate Stress

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ε

MECHANICS

Engineering Strain Calculator

Calculate engineering strain from change in length and original length.

Change in Length Any same unit Original Length Same unit

FORMULA ε = ΔL / L

Calculate Strain

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P

ROTATING SYSTEMS

Mechanical Power Calculator

Calculate shaft power from torque and rotational speed.

Torque N·m Speed rpm

FORMULA P = Tω

Calculate Power

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G

MACHINE DESIGN

Gear Ratio Calculator

Calculate gear ratio and driven rotational speed.

Driver Teeth Driven Teeth Driver Speed rpm

FORMULA Ratio = Driven / Driver

Calculate Gear Ratio

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Re

FLUID MECHANICS

Reynolds Number Calculator

Determine Reynolds number and approximate flow regime.

Density ρ kg/m³ Velocity V m/s Diameter D m Dynamic Viscosity μ Pa·s

FORMULA Re = ρVD / μ

Calculate Reynolds Number

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