Convert Gigalitres to Cubic Metres (GL to m3)
1 gigalitre (GL) = 1000000 cubic metres (m³). 1 m³ = 0.000001 GL. Example: 15 GL = 15 × 1000000 = 15000000 m³.
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1 GL = 1000000 m³
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigalitre to cubic metre converter to paste a column from Excel.
How to Convert Gigalitre to Cubic Metre
- 1 GL = 1000000 m³
- 1 m³ = 0.000001 GL
- Example: convert 15 GL to m³: 15 GL = 15 × 1000000 m³ = 15000000 m³
Formula
m³ = GL × 1000000
Derivation from SI units:
- 1 GL = 10⁹ L = 10⁶ m³ = 1 MCM.
- 1 m³ = 10⁻⁶ MCM.
- 1 GL = 1 MCM ÷ 0.000001 MCM per m³ = 1000000 m³
Both units are defined exactly, so the factor is exact. Gigalitre definition: gigalitre; Cubic Metre definition: cubic metre.
Worked examples
- A reading of 5 GL converts to 5000000 m³.
5 GL × 1000000 = 5000000 m³ - A value of 100 GL is 100000000 m³.
100 GL × 1000000 = 100000000 m³
Gigalitre to Cubic Metre conversion table
| Gigalitres (GL) | Cubic Metres (m³) |
|---|---|
| 0.1 GL | 100000 m³ |
| 0.5 GL | 500000 m³ |
| 1 GL | 1000000 m³ |
| 5 GL | 5000000 m³ |
| 10 GL | 10000000 m³ |
| 50 GL | 50000000 m³ |
| 100 GL | 100000000 m³ |
| 500 GL | 500000000 m³ |
| 1000 GL | 1000000000 m³ |
| 10000 GL | 10000000000 m³ |
Where it's used
Gigalitres are used for australian dam storage, while cubic metres appear in farm ponds, tanks and check-dam storage. Both measure volume of stored or released water (reservoirs, river flows, allocations), so the conversion is a fixed factor.
Gigalitre to other water volume units
| Conversion | 1 GL equals |
|---|---|
| gigalitre to cubic metre | 1000000 m³ |
| gigalitre to MCM | 1 MCM |
| gigalitre to BCM | 0.001 BCM |
| gigalitre to TMC | 0.03531466672 TMC |
| gigalitre to acre-foot | 810.7131938 acre-ft |
| gigalitre to Mcft | 35.31466672 Mcft |
| gigalitre to MAF | 0.0008107131938 MAF |
| gigalitre to hectare-metre | 100 ha·m |
Show 2 more units
| gigalitre to megalitre | 1000 ML |
|---|---|
| gigalitre to cubic kilometre | 0.001 km³ |
Frequently asked questions
How many cubic metres are in 1 gigalitre?
1 GL = 1000000 m³.
How do I convert gigalitres to cubic metres?
Multiply the value in GL by 1000000. For example, 15 GL × 1000000 = 15000000 m³.
Is the GL to m³ conversion exact?
Yes. Both units are defined exactly, and 1 GL is exactly 1000000 m³.
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 Gigalitres to Cubic Metres (GL to m3). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/gigaliters-to-cubic-meters/
IEEE
Scientific Converters, "Convert Gigalitres to Cubic Metres (GL to m3)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/gigaliters-to-cubic-meters/