Liters to US gallons · Value
20 L to US gallons.
20 L = 5.283 US gal. In UK (imperial) gallons, 20 L is 4.399 UK gal.
L
=
US gal
What 20 L means
- 20 L is 21.13 US quarts, 42.27 US pints, or 84.54 US cups.
- 20 L is 676.3 US fl oz.
- 20 L fills 5 one-gallon US containers, with 0.283 gal left over.
- The US gallon (3.785 L) and the UK gallon (4.546 L) are different. In the US, a gallon means the US gallon.
- 20 L of pure water weighs 19.964 kg (44.01 lb) at 20 °C. See the water weight calculator for other temperatures.
How to convert
- Divide by 3.785411784 (the exact liters in one US gallon): 20 ÷ 3.785411784 = 5.283 US gal.
To convert the other way, use the US gallons to liters converter.
Nearby values
| Liters | US gallons | UK gallons | US quarts |
|---|---|---|---|
| 15 L | 3.963 | 3.300 | 15.85 |
| 16 L | 4.227 | 3.520 | 16.91 |
| 17 L | 4.491 | 3.739 | 17.96 |
| 18 L | 4.755 | 3.959 | 19.02 |
| 19 L | 5.019 | 4.179 | 20.08 |
| 20 L | 5.283 | 4.399 | 21.13 |
| 21 L | 5.548 | 4.619 | 22.19 |
| 22 L | 5.812 | 4.839 | 23.25 |
| 23 L | 6.076 | 5.059 | 24.30 |
| 24 L | 6.340 | 5.279 | 25.36 |
| 25 L | 6.604 | 5.499 | 26.42 |
Questions people ask
Is 20 liters more than a gallon?
Yes. 20 L is 5.283 US gallons.
How many cups are in 20 liters?
20 L is 84.54 US cups. One US cup is 236.6 mL.
How many quarts are in 20 liters?
20 L is 21.13 US liquid quarts. One US quart is 946.4 mL.
What is 20 liters in UK gallons?
20 L is 4.399 UK gallons. One UK gallon is exactly 4.54609 L.
Sources: NIST Handbook 44, Appendix C (US gallon, quart, pint, cup, fluid ounce, tablespoon and teaspoon); UK gallon: Weights and Measures Act 1985, Schedule 1; water density at 20 °C: CIPM formula (Tanaka et al., Metrologia 38, 2001).
Sources & verification
Unit definitions used by this converter:
- liter: 1 L = 1 L, exact — BIPM SI Brochure, 9th ed.
- gallon (US): 1 gal (US) = 3.785411784 L, exact (231 in³) — NIST Handbook 44 (2026), Appendix C