100 MPG to km/L
| 100 MPG (US) | = | 42.5 km/L |
| 100 MPG (US) | = | 120.1 MPG (UK / Imperial) |
| 100 MPG (US) | = | 2.35 L/100km |
How to Convert MPG to km/L
This conversion is linear (a simple multiplication), unlike MPG ↔ L/100km. Both units measure distance per unit of fuel, so they scale proportionally.
- km/L = MPG (US) × 0.42514371 (exact: 1.609344 km/mi ÷ 3.785411784 L/gal)
- km/L = MPG (UK) × 0.35400622 (exact: 1.609344 km/mi ÷ 4.54609 L/gal)
Applying the formula to 100 MPG (US): 100 × 0.4251 = 42.5 km/L.
Is 100 MPG good?
100 MPG (US) is considered Excellent — typical of hybrid and plug-in hybrid vehicles. In km/L terms, that equals 42.5 km/L. In other units: 100 MPG (US) = 120.1 MPG (UK) = 2.35 L/100km.
Need a different value? Use our MPG to km/L Converter.
Similar Conversions
| MPG (US) | km/L | L/100km |
|---|---|---|
| 55 MPG | 23.4 | 4.28 |
| 60 MPG | 25.5 | 3.92 |
| 65 MPG | 27.6 | 3.62 |
| 70 MPG | 29.8 | 3.36 |
| 80 MPG | 34.0 | 2.94 |
Related Fuel Economy Converters
Conversion factors verified against NIST, BIPM
Based on SI definitions (BIPM).
Last reviewed: March 2026
