Convert Imperial Gallon to US Peck
Convert imperial gallons to us pecks instantly. 1 imperial gallon = 0.5160283717 us peck — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Peck 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.
US Peck
A US peck is one quarter of a US bushel (8.80977 L).
An old English dry measure retained in US agriculture.
Sold for apples and other produce.
English dry measure.
Imperial Gallon to US Peck conversion formula
The relationship between imperial gallons and us pecks:
To convert imperial gallons to us pecks, multiply the value in imperial gallons by 0.5160283717. To reverse, multiply us pecks by 1.9378779438.
How to use this converter
Type a value into the calculator. The result in us pecks updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the US Peck to Imperial Gallon converter for the reverse direction.
Step-by-step: convert imperial gallons to us pecks
- Write down the value in imperial gallons (gal).
- Multiply that value by the factor 0.5160283717.
- The product is the equivalent value in us pecks (pk).
- To reverse, multiply the us peck value by 1.9378779438.
Worked examples
Example 1 — Convert 1 gal to pk:
1 × 0.5160283717 = 0.5160283717 pk
Example 2 — Convert 100 gal to pk:
100 × 0.5160283717 = 51.6028371744 pk
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 us pecks daily when mixing metric and imperial tools.
10 gal × 0.5160283717 = 5.1602837174 pk
Real-world example — Postcard and small-object dimensions
A postcard is about 5 imperial gallons wide. Converting to us pecks is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 gal × 0.5160283717 = 2.5801418587 pk
Real-world example — Ruler-scale measurements
A 30-imperial gallon school ruler converts cleanly to us pecks — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 gal × 0.5160283717 = 15.4808511523 pk
Imperial Gallon to US Peck conversion table
Standard reference values for converting imperial gallons to us pecks:
| Imperial Gallon [gal] | US Peck [pk] |
|---|---|
| 0.01 | 0.0051602837 |
| 0.1 | 0.0516028372 |
| 1 | 0.5160283717 |
| 2 | 1.0320567435 |
| 3 | 1.5480851152 |
| 4 | 2.064113487 |
| 5 | 2.5801418587 |
| 10 | 5.1602837174 |
| 20 | 10.3205674349 |
| 30 | 15.4808511523 |
| 40 | 20.6411348698 |
| 50 | 25.8014185872 |
| 100 | 51.6028371744 |
| 500 | 258.0141858722 |
| 1000 | 516.0283717444 |
Frequently asked questions
How many us pecks is 1 imperial gallon?
How do I convert imperial gallons to us pecks?
How do I convert us pecks back to imperial gallons?
How many us pecks is 100 imperial gallons?
Popular volume unit conversions
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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 = 0.5160283717 pk) 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.