Convert Gigalitres to Hectare-metres (GL to ha-m)
1 gigalitre (GL) = 100 hectare-metres (ha·m). 1 ha·m = 0.01 GL. Example: 15 GL = 15 × 100 = 1500 ha·m.
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1 GL = 100 ha·m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigalitre to hectare-metre converter to paste a column from Excel.
How to Convert Gigalitre to Hectare-metre
- 1 GL = 100 ha·m
- 1 ha·m = 0.01 GL
- Example: convert 15 GL to ha·m: 15 GL = 15 × 100 ha·m = 1500 ha·m
Formula
ha·m = GL × 100
Derivation from SI units:
- 1 GL = 10⁹ L = 10⁶ m³ = 1 MCM.
- 1 ha·m = 10,000 m² × 1 m = 10⁴ m³ = 0.01 MCM.
- 1 GL = 1 MCM ÷ 0.01 MCM per ha·m = 100 ha·m
Both units are defined exactly, so the factor is exact. Gigalitre definition: gigalitre; Hectare-metre definition: hectare-metre.
Worked examples
- A reading of 5 GL converts to 500 ha·m.
5 GL × 100 = 500 ha·m - A value of 100 GL is 10000 ha·m.
100 GL × 100 = 10000 ha·m
Gigalitre to Hectare-metre conversion table
| Gigalitres (GL) | Hectare-metres (ha·m) |
|---|---|
| 0.1 GL | 10 ha·m |
| 0.5 GL | 50 ha·m |
| 1 GL | 100 ha·m |
| 5 GL | 500 ha·m |
| 10 GL | 1000 ha·m |
| 50 GL | 5000 ha·m |
| 100 GL | 10000 ha·m |
| 500 GL | 50000 ha·m |
| 1000 GL | 100000 ha·m |
| 10000 GL | 1000000 ha·m |
Where it's used
Gigalitres are used for australian dam storage, while hectare-metres appear in crop water requirement and duty–delta problems. 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 hectare-metre | 100 ha·m |
| 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 megalitre | 1000 ML |
|---|---|
| gigalitre to cubic kilometre | 0.001 km³ |
Frequently asked questions
How many hectare-metres are in 1 gigalitre?
1 GL = 100 ha·m.
How do I convert gigalitres to hectare-metres?
Multiply the value in GL by 100. For example, 15 GL × 100 = 1500 ha·m.
Is the GL to ha·m conversion exact?
Yes. Both units are defined exactly, and 1 GL is exactly 100 ha·m.
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 Hectare-metres (GL to ha-m). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/gigaliters-to-hectare-meters/
IEEE
Scientific Converters, "Convert Gigalitres to Hectare-metres (GL to ha-m)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/gigaliters-to-hectare-meters/