Convert US Gallon to Kiloliter
Convert us gallons to kiloliters instantly. 1 us gallon = 0.0037854118 kiloliter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Kiloliter to US Gallon converter for the reverse conversion.
Units explained
US Gallon
The US liquid gallon is defined as exactly 231 cubic inches (3.785411784 liters).
Based on the English wine gallon of 231 cubic inches, retained by the US after 1824.
The primary US unit for fuel, milk and large beverage containers.
English wine gallon; US since 1824.
Kiloliter
A kiloliter is 1,000 liters, exactly equal to one cubic meter.
Formed with the SI prefix kilo- applied to the liter.
Used for water supply, tanks and bulk liquid storage.
Metric prefix system.
US Gallon to Kiloliter conversion formula
The relationship between us gallons and kiloliters:
To convert us gallons to kiloliters, multiply the value in us gallons by 0.0037854118. To reverse, multiply kiloliters by 264.1720523581.
How to use this converter
Type a value into the calculator. The result in kiloliters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Kiloliter to US Gallon converter for the reverse direction.
Step-by-step: convert us gallons to kiloliters
- Write down the value in us gallons (gal).
- Multiply that value by the factor 0.0037854118.
- The product is the equivalent value in kiloliters (kL).
- To reverse, multiply the kiloliter value by 264.1720523581.
Worked examples
Example 1 — Convert 1 gal to kL:
1 × 0.0037854118 = 0.0037854118 kL
Example 2 — Convert 100 gal to kL:
100 × 0.0037854118 = 0.3785411784 kL
Real-world example — Children's height milestones
A 150-us gallon-tall child measures a value in kiloliters that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 gal × 0.0037854118 = 0.5678117676 kL
Real-world example — Body height conversion
You enter your height as 180 us gallons into an international job or visa application. The form then asks for the same value in kiloliters — converting between these adjacent units is one of the most-used length conversions globally.
180 gal × 0.0037854118 = 0.6813741211 kL
Real-world example — Furniture and large objects
A 72-us gallon piece of furniture converts to a value in kiloliters that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.
72 gal × 0.0037854118 = 0.2725496484 kL
US Gallon to Kiloliter conversion table
Standard reference values for converting us gallons to kiloliters:
| US Gallon [gal] | Kiloliter [kL] |
|---|---|
| 0.01 | 3.785412e-5 |
| 0.1 | 0.0003785412 |
| 1 | 0.0037854118 |
| 2 | 0.0075708236 |
| 3 | 0.0113562354 |
| 4 | 0.0151416471 |
| 5 | 0.0189270589 |
| 10 | 0.0378541178 |
| 20 | 0.0757082357 |
| 30 | 0.1135623535 |
| 40 | 0.1514164714 |
| 50 | 0.1892705892 |
| 100 | 0.3785411784 |
| 500 | 1.892705892 |
| 1000 | 3.785411784 |
Frequently asked questions
How many kiloliters is 1 us gallon?
How do I convert us gallons to kiloliters?
How do I convert kiloliters back to us gallons?
How many kiloliters is 100 us gallons?
Popular volume unit conversions
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Metric / SI (15 units)
US Customary (Liquid) (14 units)
US Customary (Dry) (5 units)
Imperial (UK) (14 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Sources & references
Conversion factor (1 gal = 0.0037854118 kL) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.