Motors & Mechanical Formulas
Motor and mechanical formulas relate torque, speed, voltage, and power for rotating machines. These calculators help you size motors and drivers and predict performance under load. They bridge the electrical and mechanical sides of motion systems.
Motors & Mechanical Formula Calculators
- Motor Mechanical Power P = τ × ω
- Motor Torque τ = Kt × I
- Motor Speed n = (V − I×R) / Ke
- Gear Ratio Output Torque τout = τin × N × η
- Back-EMF Voltage Vemf = Ke × ω
- Motor Efficiency η = Pmech / Pelec
- Rotational Dynamics τ = J × α
- Stepper Motor Step Angle θ = 360 / (steps × microstep)
- BLDC Motor Kv to Kt Conversion Kt = 9.549 / Kv
- Shaft (Mechanical) Power P = τ × 2π × n / 60
- Servo Load Torque T = F × d
- PWM Motor Effective Voltage Veff = Vcc × D
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