Convert Gigalitres to Megalitres (GL to ML)
1 gigalitre (GL) = 1000 megalitres (ML). 1 ML = 0.001 GL. Example: 15 GL = 15 × 1000 = 15000 ML.
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1 GL = 1000 ML
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigalitre to megalitre converter to paste a column from Excel.
How to Convert Gigalitre to Megalitre
- 1 GL = 1000 ML
- 1 ML = 0.001 GL
- Example: convert 15 GL to ML: 15 GL = 15 × 1000 ML = 15000 ML
Formula
ML = GL × 1000
Derivation from SI units:
- 1 GL = 10⁹ L = 10⁶ m³ = 1 MCM.
- 1 ML = 10⁶ L = 1000 m³.
- 1 GL = 1 MCM ÷ 0.001 MCM per ML = 1000 ML
Both units are defined exactly, so the factor is exact. Gigalitre definition: gigalitre; Megalitre definition: megalitre.
Worked examples
- A reading of 5 GL converts to 5000 ML.
5 GL × 1000 = 5000 ML - A value of 100 GL is 100000 ML.
100 GL × 1000 = 100000 ML
Gigalitre to Megalitre conversion table
| Gigalitres (GL) | Megalitres (ML) |
|---|---|
| 0.1 GL | 100 ML |
| 0.5 GL | 500 ML |
| 1 GL | 1000 ML |
| 5 GL | 5000 ML |
| 10 GL | 10000 ML |
| 50 GL | 50000 ML |
| 100 GL | 100000 ML |
| 500 GL | 500000 ML |
| 1000 GL | 1000000 ML |
| 10000 GL | 10000000 ML |
Where it's used
Gigalitres are used for australian dam storage, while megalitres appear in australian water entitlements. 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 megalitre | 1000 ML |
| 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 cubic metre | 1000000 m³ |
| gigalitre to Mcft | 35.31466672 Mcft |
| gigalitre to MAF | 0.0008107131938 MAF |
Show 2 more units
| gigalitre to hectare-metre | 100 ha·m |
|---|---|
| gigalitre to cubic kilometre | 0.001 km³ |
Frequently asked questions
How many megalitres are in 1 gigalitre?
1 GL = 1000 ML.
How do I convert gigalitres to megalitres?
Multiply the value in GL by 1000. For example, 15 GL × 1000 = 15000 ML.
Is the GL to ML conversion exact?
Yes. Both units are defined exactly, and 1 GL is exactly 1000 ML.
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 Megalitres (GL to ML). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/gigaliters-to-megaliters/
IEEE
Scientific Converters, "Convert Gigalitres to Megalitres (GL to ML)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/gigaliters-to-megaliters/