Convert Cubic Kilometres to Gigalitres (km3 to GL)
1 cubic kilometre (km³) = 1000 gigalitres (GL). 1 GL = 0.001 km³. Example: 15 km³ = 15 × 1000 = 15000 GL.
Also searched as cubic kilometres to GL, cubic kilometres in GL, cubic kilometres into gigalitres, km3 to GL, km3 in gigalitres, km3 into gigalitre, cubic kilometre to gigalitre, km3 to gigalitres converter, cubic kilometers to gigaliters and how many gigalitres in a cubic kilometre.
1 km³ = 1000 GL
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk cubic kilometre to gigalitre converter to paste a column from Excel.
How to Convert Cubic Kilometre to Gigalitre
- 1 km³ = 1000 GL
- 1 GL = 0.001 km³
- Example: convert 15 km³ to GL: 15 km³ = 15 × 1000 GL = 15000 GL
Formula
GL = km³ × 1000
Derivation from SI units:
- 1 km³ = 10⁹ m³ = 1 BCM.
- 1 GL = 10⁹ L = 10⁶ m³ = 1 MCM.
- 1 km³ = 1000 MCM ÷ 1 MCM per GL = 1000 GL
Both units are defined exactly, so the factor is exact. Cubic Kilometre definition: cubic kilometre; Gigalitre definition: gigalitre.
Worked examples
- A reading of 10 km³ converts to 10000 GL.
10 km³ × 1000 = 10000 GL - A value of 500 km³ is 500000 GL.
500 km³ × 1000 = 500000 GL
Cubic Kilometre to Gigalitre conversion table
| Cubic Kilometres (km³) | Gigalitres (GL) |
|---|---|
| 0.1 km³ | 100 GL |
| 1 km³ | 1000 GL |
| 5 km³ | 5000 GL |
| 10 km³ | 10000 GL |
| 50 km³ | 50000 GL |
| 100 km³ | 100000 GL |
| 500 km³ | 500000 GL |
| 1000 km³ | 1000000 GL |
| 4000 km³ | 4000000 GL |
| 10000 km³ | 10000000 GL |
Where it's used
Cubic Kilometres are used for global water budgets, while gigalitres appear in australian dam storage. Both measure volume of stored or released water (reservoirs, river flows, allocations), so the conversion is a fixed factor.
Cubic Kilometre to other water volume units
| Conversion | 1 km³ equals |
|---|---|
| cubic kilometre to gigalitre | 1000 GL |
| cubic kilometre to MCM | 1000 MCM |
| cubic kilometre to BCM | 1 BCM |
| cubic kilometre to TMC | 35.31466672 TMC |
| cubic kilometre to acre-foot | 810713.1938 acre-ft |
| cubic kilometre to cubic metre | 1000000000 m³ |
| cubic kilometre to Mcft | 35314.66672 Mcft |
| cubic kilometre to MAF | 0.8107131938 MAF |
Show 2 more units
| cubic kilometre to hectare-metre | 100000 ha·m |
|---|---|
| cubic kilometre to megalitre | 1000000 ML |
Frequently asked questions
How many gigalitres are in 1 cubic kilometre?
1 km³ = 1000 GL.
How do I convert cubic kilometres to gigalitres?
Multiply the value in km³ by 1000. For example, 15 km³ × 1000 = 15000 GL.
Is the km³ to GL conversion exact?
Yes. Both units are defined exactly, and 1 km³ is exactly 1000 GL.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Cubic Kilometres to Gigalitres (km3 to GL). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/cubic-kilometers-to-gigaliters/
IEEE
Scientific Converters, "Convert Cubic Kilometres to Gigalitres (km3 to GL)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/cubic-kilometers-to-gigaliters/