Instant · Precise · Universal
47 units available
6 categories total
To liters: multiply by 10⁹. To cubic meters: multiply by 10⁶. To megalliters: multiply by 1,000.
1 GL = 10⁹ L = 10⁶ m³ = 1,000 ML. One teraliter = 1,000 GL.
For example, 1 Gigaliter (GL) = 219969248.3 Gallon (UK) (gal (UK)).
| Gigaliter (GL) | Gallon (UK) (gal (UK)) |
|---|---|
| 0.1 | 21996924.83 |
| 0.5 | 109984624.1 |
| 1 | 219969248.3 |
| 2 | 439938496.6 |
| 5 | 1099846241 |
| 10 | 2199692483 |
| 25 | 5499231207 |
| 50 | 10998462410 |
| 100 | 21996924830 |
| 500 | 109984624100 |
| 1000 | 219969248300 |
The gigaliter is a unit of volume equal to one billion liters (10⁹ L), or one million cubic meters.
1 GL = 10⁹ L = 10⁶ m³ = 1,000 ML. One teraliter = 1,000 GL.
To liters: multiply by 10⁹. To cubic meters: multiply by 10⁶. To megalliters: multiply by 1,000.
Reporting dam capacities (e.g., Hoover Dam stores ~35 GL), regional water budgets, and flood volumes.
Sydney Harbour holds approximately 500 GL of water. Lake Mead (behind Hoover Dam) has a capacity of about 35,200 GL.
Underestimating the scale — 1 GL = one billion liters = one million cubic meters. It is an enormous volume.
Think 'giga = billion.' 1 GL would fill 400 Olympic pools. It's the unit for dams and large reservoirs.
The UK (imperial) gallon is a unit of volume equal to 160 UK fluid ounces, or exactly 4.54609 liters.
1 UK gal = 4 UK qt = 8 UK pt = 160 UK fl oz = 4.54609 L ≈ 1.201 US gal.
To liters: multiply by 4.54609. To US gallons: multiply by 1.20095. To cubic meters: multiply by 0.00454609.
UK road signs (mpg), older fuel consumption references, and some Caribbean and Middle Eastern markets that still use imperial units.
A UK gallon is about 20% larger than a US gallon. A car rated at 40 mpg (UK) gets only about 33 mpg (US).
Misinterpreting UK mpg as US mpg — UK figures look higher because the imperial gallon is larger.
UK gallon ≈ 4.55 L ≈ 1.2 US gallons. The UK gallon was defined so that 1 gallon of water = 10 pounds.



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