Improvised Torque Wrench

Calculate torque/moment using an improvised setup with a standard wrench and a scale. Supports both SI units (kg, meters) and Imperial units (lbf, inches/feet).

Calculator

Inputs

Scale Reading (kg)

Wrench Length (m)

Gravity (g) (m/s²)

Results

Torque-- Nm

Calculator

Inputs

Scale Reading (lbf)

Wrench Length (inches)

Results

Torque (in·lbf)-- in·lbf

Torque (ft·lbf)-- ft·lbf

Application	Torque (Nm)	Wrench Length (m)	Scale Reading (kg)
Cylinder Head	30	0.2	15.3
Engine Block Bolt	50	0.25	20.4
Wheel Lug Nut	100	0.3	34.0
Suspension Component	60	0.2	30.6
Oil Drain Plug	25	0.15	17.0