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UnitCalculators.com

Litres to millilitres

Multiply litres by 1,000 to get millilitres.

1 L = 1,000 mLBIPM SI
L
1,500mL

1.5 L = 1,500 mL

How to convert litres to millilitres

The millilitre is one thousandth of a litre, equal to one cubic centimetre (cm³). The litre is a cubic decimetre (0.001 m³), the SI-accepted metric unit of volume.

Worked example — 1.5 L: 1.5 × 1,000 = 1,500 mL.

Litres to millilitres table

Common conversions. The reverse table is on millilitres to litres.
LitresMillilitres
0.1 L100 mL
0.25 L250 mL
0.5 L500 mL
1 L1,000 mL
1.5 L1,500 mL
2 L2,000 mL
5 L5,000 mL
10 L10,000 mL
20 L20,000 mL

Reverse and related

About litres and millilitres

Litre (L)

1 L = 1,000 mL

Definition. A cubic decimetre (0.001 m³), the SI-accepted metric unit of volume

History and origin

The litre was introduced in France in 1795 as a unit of volume, defined as one cubic decimetre. It is not an SI base unit but is accepted for use with the SI.

Current use

Litres measure drinks and bottles, fuel and engine sizes across the metric world, and appear on beverage containers almost everywhere.

Source: BIPM SI Brochure (2019); the litre is an SI-accepted unit (1 L = 1 dm³)

Millilitre (mL)

1 mL = 0.001 L

Definition. One thousandth of a litre, equal to one cubic centimetre (cm³)

History and origin

The millilitre is one thousandth of a litre, equal to one cubic centimetre. It came with the decimal metric system as the unit for small liquid volumes.

Current use

Millilitres are used for recipes, medicine doses and cosmetics, and are printed on most small bottles and cans.

Source: BIPM SI Brochure (2019); the litre is an SI-accepted unit (1 L = 1 dm³)

Where people use this

Litres: drinks and bottles, fuel, engine sizes. Millilitres: recipes, medicine doses, cosmetics. 1 L is exactly 1000 mL.

How we know this is right
The factor is fixed by the standards that define the units, not chosen — so it is exact, not a measurement:
1 mL = 0.001 L, so 1 L = 1 ÷ 0.001 = 1,000 mL.

Every value is carried to full double precision; the display is rounded.

Both units are defined in BIPM SI Brochure (2019); the litre is an SI-accepted unit (1 L = 1 dm³).

Questions people ask

How many mL in a litre?

One litre is exactly 1000 millilitres.

How many mL is 2 L?

2 litres is 2000 mL.

What is 0.5 L in mL?

Half a litre is 500 mL.

All litre conversions