Formula:

°F = (K - 273.15) × 9/5 + 32

Calculation:

1. Subtract 273.15 from Kelvin: 120 K - 273.15 = -153.15

2. Multiply by 9/5: -153.15 × 9/5 = -275.67

3. Add 32: -275.67 + 32 = -243.67

Result:

120 Kelvin is equal to -243.67 degrees Fahrenheit.