# Liters to milliliters converter

> Convert liters to milliliters (liters to ml) with the exact factor, a conversion chart and worked steps.

Interactive version: https://www.calcopenly.com/conversion/liters-to-ml
Subject: Unit converters

Liter volumes commonly describe bottles, tanks and liquid purchases. A fractional liter can be useful when comparing container capacities or adapting a recipe. If the destination uses gallons or cups, check the regional definition before deciding how many containers to buy.

One litre is exactly 1,000 milliliters, so 1.5 L is 1,500 mL. To convert liters to ml, multiply by 1,000; to convert back, multiply by 0.001.

The litre is exactly one cubic decimetre, so 1 L is 1,000 mL and 1 mL is 1 cm³. Because both units are defined exactly, the factor above is exact and the results here carry no conversion error.

## Inputs

- **Liters (L)**

## Results

- Milliliters (mL) — main result
- Conversion
- 1 mL in liters (L)

## Formula

$$
\text{milliliters} = \text{liters} \times 1{,}000
$$

## Worked examples

### 1.5 L to mL

- Liters (L): 1.5 L
- **Milliliters: 1,500 mL**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 0.5 L to mL

- Liters (L): 0.5 L
- **Milliliters: 500 mL**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 3 L to mL

- Liters (L): 3 L
- **Milliliters: 3,000 mL**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

## Questions

### When would I convert liters to ml?

Liter volumes commonly describe bottles, tanks and liquid purchases. A fractional liter can be useful when comparing container capacities or adapting a recipe. If the destination uses gallons or cups, check the regional definition before deciding how many containers to buy.

### How many milliliters are in a litre?

One litre is exactly 1,000 milliliters. The litre is exactly one cubic decimetre, so 1 L is 1,000 mL and 1 mL is 1 cm³.

### How do you convert liters to ml?

Multiply the number of liters by 1,000. For example, 1.5 L × 1,000 = 1,500 mL. To go the other way, divide by 1,000.

### How accurate is the liters to milliliters converter?

Accuracy depends on your inputs and the method's assumptions. Decimal arithmetic uses 50 significant digits, but estimates, numerical methods and source data can be less precise; the displayed rounding does not remove those limits. It is checked against 3 worked examples whose answers come from independent sources; for example, “1.5 L to mL” is checked against Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions).

### Where does the method come from?

NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B; NIST Handbook 44, Appendix C: General tables of units of measurement; BIPM, The International System of Units (SI Brochure), 9th edition.

## Sources

- [NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C: General tables of units of measurement](https://www.nist.gov/pml/weights-and-measures/publications/nist-handbooks/handbook-44)
- [BIPM, The International System of Units (SI Brochure), 9th edition](https://www.bipm.org/en/publications/si-brochure)