EngineeringFormulaMechanical
Power transmission and material behavior for machine design.
Mechanical design rarely comes down to a single formula in isolation - a gear ratio decision affects belt speed, which affects the torque and horsepower a shaft has to carry. This discipline covers each of those links separately: Torque, Horsepower, Gear Ratio, Pulley Ratio, and Belt Speed on the power-transmission side; Stress, Strain, and Young's Modulus on the material-behavior side.
The calculators are single-relationship tools by design, not a combined drivetrain solver - chain a few together (gear ratio into belt speed, horsepower into torque) for a multi-step problem, the same way you would by hand.
Mechanical Calculators
21 tools- Torque CalculatorT = F × r
- Bolt Torque CalculatorT = K × D × F
- Weld Strength Calculatorte = 0.707 × s
- Shaft Diameter Calculatord = (16T / (pi tau_d))^(1/3)
- Bearing Load CalculatorP = max(Fr, XFr + YFa)
- Torque Wrench CalculatorE_eff = E × cos θ
- Pulley Ratio Calculatori = D2 / D1
- Belt Speed Calculatorv = π × D × n
- Belt Length CalculatorL = 2sqrt(C² - e²) + d(π - 2β)/2 + D(π + 2β)/2
- Chain Length CalculatorL = 2C/p + (N1 + N2)/2 + (N2 - N1)^2 / (4pi^2 C/p)
- Sprocket Calculatori = N2 / N1
- Thread Pitch CalculatorPmm = 25.4 / TPI
- Spring Compression Calculatork = G d^4 / (8 D^3 Na)
- Flywheel Energy CalculatorE = 1/2 I omega^2
- Compression Ratio CalculatorCR = (Vs + Vc) / Vc
- Engine Displacement CalculatorV = n π B² S / 4
- Gear Ratio Calculatori = N2 / N1
- Horsepower CalculatorHP = P(W) / 745.7
- Stress Calculatorσ = F / A
- Strain Calculatorε = ΔL / L0
- Young's Modulus CalculatorE = σ / ε
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