Imperial gallon to Cubic kilometer
imp gal
km³
Conversion History
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Quick Reference Table (Imperial gallon to Cubic kilometer)
| Imperial gallon (imp gal) | Cubic kilometer (km³) |
|---|---|
| 0.5 | 0.000000000002273045 |
| 1 | 0.00000000000454609 |
| 2 | 0.00000000000909218 |
| 5 | 0.00000000002273045 |
| 10 | 0.0000000000454609 |
| 50 | 0.0000000002273045 |
About Imperial gallon (imp gal)
The imperial gallon is a unit of volume defined as exactly 4.54609 liters, used in the United Kingdom, Canada, and some Commonwealth nations. It is approximately 20% larger than the US liquid gallon. Fuel economy in the UK is expressed in miles per imperial gallon. The imperial gallon divides into 8 imperial pints, each of 568 mL. The UK officially metricated fuel sales to liters in the 1980s–1990s, but miles per imperial gallon remains the legal unit for new car fuel economy labels.
UK car fuel economy figures are expressed in miles per imperial gallon. One imperial gallon equals 8 standard UK pints of beer.
About Cubic kilometer (km³)
A cubic kilometer (km³) is the volume of a cube with 1 km sides, equal to one trillion liters (10¹² L). It is used in geoscience, oceanography, glaciology, and climate science to express volumes of ice sheets, ocean basins, volcanic eruptions, and river discharge over long periods. The volume of Earth's oceans is approximately 1,335,000 km³. The Greenland ice sheet contains about 2,850,000 km³ of ice. Major volcanic eruptions are described by the dense rock equivalent (DRE) in km³.
Lake Superior holds about 12,100 km³ of water. A major explosive volcanic eruption might eject 1–1,000 km³ of material.
Imperial gallon – Frequently Asked Questions
How many liters are in an imperial gallon?
One imperial gallon is defined as exactly 4.54609 liters — approximately 20% more than the US liquid gallon (3.785 L).
Does the UK still use gallons?
The UK switched fuel sales to liters in the 1990s. However, miles per gallon (imperial) remains the legal unit for car fuel economy on new vehicle labels. Road speed is in mph and distances are in miles, so imperial gallons remain embedded in UK motoring.
How does UK MPG differ from US MPG?
UK MPG uses the imperial gallon (4.546 L); US MPG uses the US gallon (3.785 L). Multiply UK MPG by 0.832 to get US MPG. A car rated 40 UK MPG ≈ 33 US MPG.
How many pints are in an imperial gallon?
There are exactly 8 imperial pints in one imperial gallon. Each imperial pint is 568 mL, compared to 473 mL for a US pint.
Is the imperial gallon still used in Canada?
Canada officially metricated in the 1970s and fuel is sold in liters. However, some older Canadians and certain agricultural contexts still reference imperial gallons informally. Canadian and UK imperial gallons are identical (4.54609 L).
Cubic kilometer – Frequently Asked Questions
What is a cubic kilometer?
A cubic kilometer (km³) is the volume of a cube 1 km on each side, equal to one trillion liters or one billion cubic meters. It is the standard unit in geoscience for expressing planetary-scale volumes of water, ice, and magma.
How much water is in all of Earth's oceans in km³?
Earth's oceans contain approximately 1,335,000 km³ of water. The world's total freshwater supply is about 35,000 km³, of which most (roughly 26,000 km³) is locked in glaciers and ice caps.
How do scientists measure volcanic eruption volumes in km³?
Volcanologists calculate eruption size as the Dense Rock Equivalent (DRE) in km³ — the volume of solid rock that would result if fragmented material were compressed. The 1815 Tambora eruption ejected roughly 160 km³ DRE, the largest in recorded history.
How many liters are in a cubic kilometer?
One cubic kilometer equals 1,000,000,000,000 liters (one trillion liters or one petaliter). It also equals 10⁹ m³ (one billion cubic meters).
What is the Greenland ice sheet volume in km³?
The Greenland ice sheet contains approximately 2,850,000 km³ of ice. If fully melted, it would raise global sea level by about 7.2 meters. Annual ice loss from Greenland is measured in hundreds of km³ per year.