volume · L
Liter (L)
A liter (L or l) is a metric volume unit equal to 1000 milliliters and approximately 0.264 US gallons. One liter of pure water has a mass of about 1 kg near 4°C.
Definition
A liter (L or l) is a metric volume unit equal to 1000 milliliters and approximately 0.264 US gallons. One liter of pure water has a mass of about 1 kg near 4°C.
History & origin
Originally defined as the volume of 1 kg of water, the liter is now exactly 1 cubic decimeter (1 dm³) and is accepted for use with SI.
Conversion formula
ml = L × 1000 · US gal ≈ L × 0.264172 · m³ = L ÷ 1000
Frequently asked questions
- Liter or litre — which spelling?
- Both correct: liter (US), litre (UK/others).
- How many liters in a US gallon?
- About 3.785 L.
- Does 1 L of water always weigh 1 kg?
- Approximately near 4°C for pure water. Temperature, purity, and pressure change density slightly.
Related units
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