Milliliter is 0.001 liter units.
Milliliters to Microliters Converter — mL to uL
Convert Milliliter (mL) to Microliter (uL) using the exact conversion factor (1 milliliter = 1,000 microliter). See the formula, worked examples, conversion table, history, and common uses.
Milliliters to Microliters converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
Microliter is 0.000001 liter units.
Result = input x 1e-6 / 1e-9.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milliliters to Microliters
Milliliter and Microliter appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Milliliter is most often used for medicine dosing (worldwide, including in the us).
Formula
microliters = milliliters × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 milliliter equals 0.000001 base units, and 1 microliter equals 1e-9 base units, so dividing one by the other gives the direct milliliter-to-microliter factor of 1000.
Simple example
1 mL × 1000 = 1,000 uL
1 milliliter = 1,000 microliters.
Real-world example
10 mL × 1000 = 10,000 uL
10 milliliters = 10,000 microliters.
Conversion table
| Milliliter (mL) | Microliter (uL) |
|---|---|
| 1 mL | 1,000 uL |
| 5 mL | 5,000 uL |
| 10 mL | 10,000 uL |
| 25 mL | 25,000 uL |
| 50 mL | 50,000 uL |
| 100 mL | 100,000 uL |
Reverse conversion: Microliter to Milliliter
1 uL × 0.001 = 0.001 mL
1 microliter = 0.001 milliliters.
milliliters = microliters × 0.001
For a page dedicated to this direction, see Microliter to Milliliter.
Understanding the Milliliter
Milliliter (mL) measures volume. A milliliter is one-thousandth of a liter, equal to one cubic centimeter. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard small-volume unit worldwide
Uses of the Milliliter today
- Medicine dosing (worldwide, including in the US)
- Cooking and recipe measurement outside the US
- Beverage and small-container labeling
History of the Milliliter
The milliliter follows directly from the liter via the 'milli-' SI prefix. It is notable as one of the few metric units in routine US use, since medicine dosing (syringes, liquid medication) is specified in milliliters even in the US.
Historical origin. Milliliter was not the invention of a single named person; it developed through the process described above.
Understanding the Microliter (uL)
Microliter is 0.000001 liter units.
Milliliter — sources
- BIPM SI Brochure — SI prefixes — Defines 'milli-' as the prefix for 10⁻³.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many microliters are in 1 milliliter?
1 milliliter equals 1,000 microliters, using the exact defined conversion factor rather than an estimate.
How do I convert milliliter to microliter?
Multiply the milliliter value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert microliter back to milliliter?
Use the reverse factor: 1 microliter equals 0.001 milliliters. You can also use the swap control in the converter above to flip the direction instantly.
What is a milliliter?
Milliliter (mL) measures volume. A milliliter is one-thousandth of a liter, equal to one cubic centimeter. It is classified as a SI derived (metric prefix) unit.
What is a microliter?
Microliter (uL) is a unit of volume.
Is the milliliter to microliter conversion exact?
Yes. Both milliliter and microliter are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
Where is the milliliter still used today?
Standard small-volume unit worldwide