Convert litres to millilitres
1 L = 1000 mL
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How many millilitres are in a litre?
One litre is 1000 millilitres. To convert any amount, multiply by 1000. Going the other way, one millilitre is 0.001 litres.
What is the formula to convert L to mL?
Multiply the litre figure by 1000. So mL = L × 1000. For a quick mental estimate, multiplying by about 1000 gets you within a percent or so, which is close enough for most everyday purposes.
What does a litre actually look like?
One litre is a large bottle of soft drink. The litre is exactly one cubic decimetre. It is not strictly an SI unit but is accepted for use with SI, and it is the fuel and beverage unit almost everywhere.
And what is a millilitre?
One millilitre is a fifth of a teaspoon. A millilitre is exactly one cubic centimetre, which is why medical equipment marked cc and mL means the same thing.
Is this conversion exact?
Yes. Since the 1959 international yard and pound agreement, the imperial and metric systems are related by exact definitions rather than measurements — the inch is exactly 25.4 mm and the pound exactly 0.45359237 kg. Everything derived from those, including this conversion, is therefore exact. Round at the end rather than partway through, since rounding L before converting introduces an error the conversion then multiplies.
About l to ml
How to convert litres to millilitres
Multiply by 1000. One litre is 1000 millilitres, and one millilitre is 0.001 litres.
mL = L × 1000
Worked example
10 L = 10000 mL. For a sense of scale, one litre is a large bottle of soft drink, and one millilitre is a fifth of a teaspoon.
About the litre
The litre is exactly one cubic decimetre. It is not strictly an SI unit but is accepted for use with SI, and it is the fuel and beverage unit almost everywhere.
About the millilitre
A millilitre is exactly one cubic centimetre, which is why medical equipment marked cc and mL means the same thing.
Quick reference
| litres | millilitres |
|---|---|
| 1 L | 1000 mL |
| 2 L | 2000 mL |
| 5 L | 5000 mL |
| 10 L | 10000 mL |
| 25 L | 25000 mL |
| 50 L | 50000 mL |
| 100 L | 100000 mL |
| 1000 L | 1000000 mL |
Getting it right
Check whether your source means US or imperial measures. An imperial gallon is about 20% larger than a US gallon, and an imperial fluid ounce is slightly smaller than a US one. Recipes and fuel-economy figures are where this bites hardest, because the numbers look plausible either way.
Other volume conversions
Convert millilitres back to litres, or pick any other pair with the full unit converter. Related: L to gal, L to fl oz, L to cup.