The imperial gallon is a unit of volume used in the imperial measurement system, and it is historically common in the United Kingdom and several other countries. One imperial gallon is equal to 4.54609 liters, which makes it significantly larger than the US gallon (approximately 3.785 liters). It is abbreviated as gal and traditionally used for measuring liquids in larger quantities.
In the imperial system, a gallon is made up of four quarts, eight pints, or 160 imperial fluid ounces. Though the UK has officially adopted the metric system, the imperial gallon is still recognized in specific contexts and remains part of British measurement history. It's most commonly associated with fuel pricing and older food or drink packaging.
Uses: The imperial gallon is most commonly seen today at fuel stations in the UK, where petrol and diesel are still sold by the gallon for pricing comparisons, even though the actual quantity delivered is measured in liters. Historically, the gallon was used for everything from milk deliveries to beer and cider sales.
While modern recipes and packaging have largely shifted to liters and milliliters, the imperial gallon occasionally appears in traditional instructions or product specs, especially for bulk liquids. For those referencing older materials or converting classic measurements, the imperial gallon remains a useful and historically significant unit.
A cubic inch is a unit of volume used in the imperial and U.S. customary systems. It represents the space occupied by a cube, with each side measuring exactly one inch. One cubic inch is equal to 16.387 milliliters or approximately 0.0005787 cubic feet, and it's abbreviated as in³.
The cubic inch is often used to measure smaller volumes in areas like automotive design, mechanical components, and product manufacturing. It’s a go-to unit for things like engine size, compact storage, and custom parts where detailed, space-specific measurements are needed.
Uses: The cubic inch is most widely recognized in the automotive world, where it's often used to express engine size—especially in classic American vehicles. It's also used in engineering and manufacturing for parts design, packaging, and product specifications where precision is important.
In everyday use, you might see cubic inches listed when measuring the internal dimensions of a drawer, estimating the volume of a small box, or comparing product capacities. It remains a trusted unit for capturing volume in tight spaces where accuracy matters.
1 gal (imp) = 277.418823 in³
Let’s say you want to convert 100 gal (imp) to in³.
Using the formula:
100 × 277.418823 = 27741.882 in³
So, 100 gal (imp) is approximately 27741.882 in³.
| Gallon (Imperial) (gal (imp)) | Cubic inch (in³) |
|---|---|
| 1 gal (imp) | 277.419 in³ |
| 2 gal (imp) | 554.838 in³ |
| 3 gal (imp) | 832.256 in³ |
| 4 gal (imp) | 1109.675 in³ |
| 5 gal (imp) | 1387.094 in³ |
| 6 gal (imp) | 1664.513 in³ |
| 7 gal (imp) | 1941.932 in³ |
| 8 gal (imp) | 2219.351 in³ |
| 9 gal (imp) | 2496.769 in³ |
| 10 gal (imp) | 2774.188 in³ |
| 11 gal (imp) | 3051.607 in³ |
| 12 gal (imp) | 3329.026 in³ |
| 13 gal (imp) | 3606.445 in³ |
| 14 gal (imp) | 3883.864 in³ |
| 15 gal (imp) | 4161.282 in³ |