Volume Converter
Result
1,000 Liter
How these units are defined
The litre is exactly 1 dm³ (0.001 m³). The US gallon is defined as 231 cubic inches, which makes it exactly 3.785411784 L; quarts, pints, cups and fluid ounces are fixed fractions of it.
| Unit | Equals |
|---|---|
| 1 Liter | 0.001 Cubic Meter |
| 1 Milliliter | 0.000001 Cubic Meter |
| 1 Gallon (US) | 0.003785411784 Cubic Meter |
| 1 Quart (US) | 0.000946352946 Cubic Meter |
| 1 Pint (US) | 0.000473176473 Cubic Meter |
| 1 Cup (US) | 0.000236588237 Cubic Meter |
| 1 Fluid Ounce (US) | 0.00002957353 Cubic Meter |
Worked examples
- 1 Liter = 0.26417205 Gallon (US)
- 3.785411784 Liter = 1 Gallon (US)
- 20 Liter = 5.283441 Gallon (US)
- 50 Liter = 13.208603 Gallon (US)
Common mistakes
- US and UK (imperial) measures share names but not sizes: the imperial gallon is 4.54609 L (20% larger), the imperial pint 568 mL and the imperial fluid ounce 28.41 mL.
- This converter uses US customary volumes. A US cup is 236.59 mL, a metric cup 250 mL, and US nutrition labels round a cup to 240 mL.
- US dry measures (dry pint, bushel) are a separate system and are not the same as liquid pints.
Volume conversions
Frequently asked questions
How many liters are in a gallon?
There are approximately 3.785 liters in a US gallon and 4.546 liters in an imperial (UK) gallon.
What is the difference between US and imperial fluid ounces?
A US fluid ounce is approximately 29.57 mL, while an imperial fluid ounce is approximately 28.41 mL. The imperial ounce is slightly smaller.
How many cups are in a liter?
There are approximately 4.227 US cups in a liter. For metric cups (250 mL), there are exactly 4 cups per liter.
Sources for these factors
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- 21 CFR 101.9 (nutrition labeling: household measure equivalents) — U.S. FDA / eCFR
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy