21 km/L to MPG
| 21 km/L | = | 49.4 MPG (US) |
| 21 km/L | = | 59.3 MPG (UK / Imperial) |
| 21 km/L | = | 4.76 L/100km |
How to Convert km/L to MPG
This conversion is linear (a simple multiplication). Both units measure distance per unit of fuel, so they scale proportionally.
- MPG (US) = km/L × 2.35214583 (exact: 3.785411784 L/gal ÷ 1.609344 km/mi)
- MPG (UK) = km/L × 2.82480936 (exact: 4.54609 L/gal ÷ 1.609344 km/mi)
Applying the formula to 21 km/L: 21 × 2.3522 = 49.4 MPG (US).
Is 21 km/L good?
21 km/L equals 49.4 MPG (US), which is considered Very good — typical of efficient sedans and compact cars. In Imperial units, 21 km/L = 59.3 MPG (UK) = 4.76 L/100km.
Need a different value? Use our km/L to MPG Converter.
Similar Conversions
| km/L | MPG (US) | MPG (UK) |
|---|---|---|
| 16 km/L | 37.6 | 45.2 |
| 17 km/L | 40.0 | 48.0 |
| 18 km/L | 42.3 | 50.8 |
| 19 km/L | 44.7 | 53.7 |
| 20 km/L | 47.0 | 56.5 |
| 22 km/L | 51.7 | 62.1 |
| 23 km/L | 54.1 | 65.0 |
| 24 km/L | 56.5 | 67.8 |
| 25 km/L | 58.8 | 70.6 |
| 26 km/L | 61.2 | 73.4 |
Related Fuel Economy Converters
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Reverse conversion: miles per gallon to kilometers per liter.
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km/L Calculator
Calculate km/L from distance and fuel used.
MPL to MPG
Miles per liter to miles per gallon — specialty unit conversion.
UK MPG to km/L
UK miles per gallon to kilometers per liter.
Conversion factors verified against NIST, BIPM
Based on SI definitions (BIPM).
Last reviewed: March 2026
