Torque Converter

# Torque unit conversion in Python
# Conversion factors relative to Newton-metre (Nm)
TORQUE_TO_NM = {
    "Nm":     1.0,
    "ft_lb":  1.35582,     # foot-pound
    "in_lb":  0.112985,    # inch-pound
    "in_oz":  0.00706155,  # inch-ounce
    "kgf_m":  9.80665,     # kilogram-force metre
    "kgf_cm": 0.0980665,   # kilogram-force centimetre
    "dyn_cm": 1e-7,        # dyne-centimetre
}

def convert_torque(value: float, from_unit: str, to_unit: str) -> float:
    nm = value * TORQUE_TO_NM[from_unit]
    return nm / TORQUE_TO_NM[to_unit]

# Practical examples
print(convert_torque(100, "Nm", "ft_lb"))   # 73.756  (car wheel nuts)
print(convert_torque(20,  "ft_lb", "Nm"))   # 27.116  (engine bolt)
print(convert_torque(25,  "in_lb", "Nm"))   # 2.825   (small fastener)
print(convert_torque(10,  "kgf_m", "Nm"))   # 98.067