A liter is one cubic decimeter.
Liters to Kiloliters Converter — L to kL
Convert Liter (L) to Kiloliter (kL) using the exact conversion factor (1 liter = 0.001 kiloliter). See the formula, worked examples, conversion table, history, and common uses.
Liters to Kiloliters 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.
Kiloliter is 1000 liter units.
Result = input x 0.001 / 1.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Liters to Kiloliters
Liter and Kiloliter 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. Liter is most often used for beverage, fuel, and liquid product packaging worldwide.
Formula
kiloliters = liters × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 liter equals 0.001 base units, and 1 kiloliter equals 1 base unit, so dividing one by the other gives the direct liter-to-kiloliter factor of 0.001.
Simple example
1 L × 0.001 = 0.001 kL
1 liter = 0.001 kiloliters.
Real-world example
10 L × 0.001 = 0.01 kL
10 liters = 0.01 kiloliters.
Conversion table
| Liter (L) | Kiloliter (kL) |
|---|---|
| 1 L | 0.001 kL |
| 5 L | 0.005 kL |
| 10 L | 0.01 kL |
| 25 L | 0.025 kL |
| 50 L | 0.05 kL |
| 100 L | 0.1 kL |
Reverse conversion: Kiloliter to Liter
0.001 kL × 1000 = 1 L
0.001 kiloliters = 1 liter.
liters = kiloliters × 1000
For a page dedicated to this direction, see Kiloliter to Liter.
Understanding the Liter
Liter (L) measures volume. A liter is defined as exactly one cubic decimeter (0.001 cubic meters). It is classified as a Non-SI metric unit accepted for use with SI.
Where it's used: Standard volume unit for liquids worldwide, including in the US for beverages and fuel labeling in some contexts
Uses of the Liter today
- Beverage, fuel, and liquid product packaging worldwide
- Cooking and recipe measurement in metric countries
- Laboratory and scientific volume measurement
History of the Liter
The liter was introduced with the French metric system in 1795, originally defined as the volume of one kilogram of pure water at its freezing point — tying volume, mass, and the meter together.
Between 1901 and 1964, the liter was briefly redefined as the volume of exactly one kilogram of water at its maximum density (about 4 °C), which made it very slightly larger than a cubic decimeter. It was redefined back to exactly one cubic decimeter in 1964, the definition still used today.
Historical origin. Liter was not the invention of a single named person; it developed through the process described above.
Understanding the Kiloliter (kL)
Kiloliter is 1000 liter units.
Liter — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Current cubic-decimeter definition of the liter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kiloliters are in 1 liter?
1 liter equals 0.001 kiloliters, using the exact defined conversion factor rather than an estimate.
How do I convert liter to kiloliter?
Multiply the liter value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert kiloliter back to liter?
Use the reverse factor: 1 kiloliter equals 1,000 liters. You can also use the swap control in the converter above to flip the direction instantly.
What is a liter?
Liter (L) measures volume. A liter is defined as exactly one cubic decimeter (0.001 cubic meters). It is classified as a Non-SI metric unit accepted for use with SI.
What is a kiloliter?
Kiloliter (kL) is a unit of volume.
Is the liter to kiloliter conversion exact?
Yes. A liter is defined as exactly one cubic decimeter (0.001 cubic meters). That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the liter still used today?
Standard volume unit for liquids worldwide, including in the US for beverages and fuel labeling in some contexts