Quarts to Liters Converter
Common Conversions
| qt | L |
|---|---|
| 0.25 | 0.237 |
| 0.5 | 0.473 |
| 1 | 0.946 |
| 1.057 | 1 |
| 2 | 1.893 |
| 3 | 2.839 |
| 4 | 3.785 |
| 5 | 4.732 |
| 8 | 7.571 |
| 10 | 9.464 |
| 20 | 18.927 |
Why this conversion matters in chemistry
Take lubricant R&D math. A 5 US-qt motor-oil change capacity is 4.732 L on the bench-scale ASTM D4172 four-ball wear sample volume. Worth doing carefully when reconciling vehicle service-manual oil quantities against ASTM-prescribed bench-test sample volumes for long drain interval oxidation stability (D4742) and viscosity stability (D445) work. The multiplier of 0.946353 L per qt reduces to the modern US-quart definition (946.353 mL).
Formula
L = qt × 0.946353
Worked Examples
1 qt = 0.9464 L
One US quart — about 5.4% less than one liter.
4 qt = 3.7854 L
Exactly one US gallon — the bigger anchor.
2 qt = 1.8927 L
Half a US gallon — about 2 liters.
0.5 qt = 0.4732 L
One US pint — about half a liter.
Frequently Asked Questions
How do I convert quarts to liters?
Multiply by 0.946353. So 4 quarts becomes 3.785 L — one US gallon. The factor is exact through the modern US-quart definition.
Is 1 quart approximately 1 liter?
Close — 1 US quart = 0.946 L, about 5.4% short of 1 liter. For quick mental conversions the one-liter approximation works; for careful work the exact factor matters.
When do chemists encounter quarts?
US industrial chemicals and household cleaning products sometimes ship in quart containers. The conversion to liters is the routine first step before any concentration or molarity calculation.
Difference between US and imperial quarts?
1 US quart = 0.946 L; 1 imperial (UK) quart = 1.137 L — about 20% larger. Always specify which definition the source uses.