Convert Imperial Gallon to Dekaliter
Convert imperial gallons to dekaliters instantly. 1 imperial gallon = 0.454609 dekaliter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dekaliter to Imperial Gallon converter for the reverse conversion.
Units explained
Imperial Gallon
The imperial gallon is defined as exactly 4.54609 liters.
Set by the British Weights and Measures Act of 1824 as the volume of 10 lb of water.
Used for fuel and beverages in the UK and Commonwealth.
UK, 1824.
Dekaliter
A dekaliter is 10 liters (0.01 m³).
Formed with the SI prefix deka- applied to the liter.
Occasionally used in agriculture and bulk grocery measures.
Metric prefix system.
Imperial Gallon to Dekaliter conversion formula
The relationship between imperial gallons and dekaliters:
To convert imperial gallons to dekaliters, multiply the value in imperial gallons by 0.454609. To reverse, multiply dekaliters by 2.199692483.
How to use this converter
Type a value into the calculator. The result in dekaliters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dekaliter to Imperial Gallon converter for the reverse direction.
Step-by-step: convert imperial gallons to dekaliters
- Write down the value in imperial gallons (gal).
- Multiply that value by the factor 0.454609.
- The product is the equivalent value in dekaliters (daL).
- To reverse, multiply the dekaliter value by 2.199692483.
Worked examples
Example 1 — Convert 1 gal to daL:
1 × 0.454609 = 0.454609 daL
Example 2 — Convert 100 gal to daL:
100 × 0.454609 = 45.4609 daL
Real-world example — Ruler-scale measurements
A 30-imperial gallon school ruler converts cleanly to dekaliters — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 gal × 0.454609 = 13.63827 daL
Real-world example — Hardware-scale dimensions
A 10-imperial gallon fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between imperial gallons and dekaliters daily when mixing metric and imperial tools.
10 gal × 0.454609 = 4.54609 daL
Real-world example — Postcard and small-object dimensions
A postcard is about 5 imperial gallons wide. Converting to dekaliters is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 gal × 0.454609 = 2.273045 daL
Imperial Gallon to Dekaliter conversion table
Standard reference values for converting imperial gallons to dekaliters:
| Imperial Gallon [gal] | Dekaliter [daL] |
|---|---|
| 0.01 | 0.00454609 |
| 0.1 | 0.0454609 |
| 1 | 0.454609 |
| 2 | 0.909218 |
| 3 | 1.363827 |
| 4 | 1.818436 |
| 5 | 2.273045 |
| 10 | 4.54609 |
| 20 | 9.09218 |
| 30 | 13.63827 |
| 40 | 18.18436 |
| 50 | 22.73045 |
| 100 | 45.4609 |
| 500 | 227.3045 |
| 1000 | 454.609 |
Frequently asked questions
How many dekaliters is 1 imperial gallon?
How do I convert imperial gallons to dekaliters?
How do I convert dekaliters back to imperial gallons?
How many dekaliters is 100 imperial gallons?
Popular volume unit conversions
Convert Imperial Gallon to other volume units
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Metric / SI (15 units)
US Customary (Liquid) (15 units)
US Customary (Dry) (5 units)
Imperial (UK) (13 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Sources & references
Conversion factor (1 gal = 0.454609 daL) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.