How to convert US quarts to litres
One US quart equals 0.946353 litres, so multiply the number of US quarts by 0.946353:
L = US qt × 0.946353
US qt = L ÷ 0.946353 (1 L = 1.0567 US qt)
Example: 2 US qt → 2 × 0.946353 = 1.8927 L.
Going the other way, divide by 0.946353, or multiply by 1.0567; the litres to US quarts converter does it for you.
Everyday values
| US quarts | Litres | For example |
|---|---|---|
| 1 US qt | 0.946353 L | one quart (engine oil bottle) |
| 2 US qt | 1.8927 L | half a gallon |
| 4 US qt | 3.7854 L | one US gallon |
| 5 US qt | 4.7318 L | a typical car oil change, roughly |
When you need this conversion
Engine oil capacities in US manuals are given in quarts; one US quart is 0.946 litres, so a 5-quart oil change needs about 4.7 litres. Always check the exact capacity for your engine.
US quart to litre conversion table
| US qt | L | US qt | L |
|---|---|---|---|
| 0.5 US qt | 0.473176 L | 5.5 US qt | 5.2049 L |
| 1 US qt | 0.946353 L | 6 US qt | 5.6781 L |
| 1.5 US qt | 1.4195 L | 6.5 US qt | 6.1513 L |
| 2 US qt | 1.8927 L | 7 US qt | 6.6245 L |
| 2.5 US qt | 2.3659 L | 7.5 US qt | 7.0977 L |
| 3 US qt | 2.8391 L | 8 US qt | 7.5708 L |
| 3.5 US qt | 3.3122 L | 8.5 US qt | 8.044 L |
| 4 US qt | 3.7854 L | 9 US qt | 8.5172 L |
| 4.5 US qt | 4.2586 L | 9.5 US qt | 8.9904 L |
| 5 US qt | 4.7318 L | 10 US qt | 9.4635 L |
About the units
- US quart (US qt): 2 US pints or 1/4 US gallon, about 946.4 ml.
- Litre (L): one cubic decimetre (1,000 cm³).
Both are units of volume. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many litres are in one US quart?
One US quart is 0.946353 litres. One litre is 1.0567 US quarts.
How do I convert US quarts to litres?
Multiply the value in US quarts by 0.946353. To go back, divide by 0.946353.
What is 2 US qt in litres?
2 US qt = 1.8927 L.
What is 4 US qt in litres?
4 US qt = 3.7854 L.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.