Convert Hectare-metres to Cubic Kilometres (ha-m to km3)
1 hectare-metre (ha·m) = 0.00001 cubic kilometres (km³). 1 km³ = 100000 ha·m. Example: 15 ha·m = 15 × 0.00001 = 0.00015 km³.
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1 ha·m = 0.00001 km³
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk hectare-metre to cubic kilometre converter to paste a column from Excel.
How to Convert Hectare-metre to Cubic Kilometre
- 1 ha·m = 0.00001 km³
- 1 km³ = 100000 ha·m
- Example: convert 15 ha·m to km³: 15 ha·m = 15 × 0.00001 km³ = 0.00015 km³
Formula
km³ = ha·m ÷ 100000
Derivation from SI units:
- 1 ha·m = 10,000 m² × 1 m = 10⁴ m³ = 0.01 MCM.
- 1 km³ = 10⁹ m³ = 1 BCM.
- 1 ha·m = 0.01 MCM ÷ 1000 MCM per km³ = 0.00001 km³
Both units are defined exactly, so the factor is exact. Hectare-metre definition: hectare-metre; Cubic Kilometre definition: cubic kilometre.
Worked examples
- A reading of 100 ha·m converts to 0.001 km³.
100 ha·m × 0.00001 = 0.001 km³ - A value of 5000 ha·m is 0.05 km³.
5000 ha·m × 0.00001 = 0.05 km³
Hectare-metre to Cubic Kilometre conversion table
| Hectare-metres (ha·m) | Cubic Kilometres (km³) |
|---|---|
| 1 ha·m | 0.00001 km³ |
| 10 ha·m | 0.0001 km³ |
| 50 ha·m | 0.0005 km³ |
| 100 ha·m | 0.001 km³ |
| 500 ha·m | 0.005 km³ |
| 1000 ha·m | 0.01 km³ |
| 5000 ha·m | 0.05 km³ |
| 10000 ha·m | 0.1 km³ |
| 50000 ha·m | 0.5 km³ |
| 100000 ha·m | 1 km³ |
Where it's used
Hectare-metres are used for crop water requirement and duty–delta problems, while cubic kilometres appear in global water budgets. Both measure volume of stored or released water (reservoirs, river flows, allocations), so the conversion is a fixed factor.
Hectare-metre to other water volume units
| Conversion | 1 ha·m equals |
|---|---|
| hectare-metre to cubic kilometre | 0.00001 km³ |
| hectare-metre to MCM | 0.01 MCM |
| hectare-metre to BCM | 0.00001 BCM |
| hectare-metre to TMC | 0.0003531466672 TMC |
| hectare-metre to acre-foot | 8.107131938 acre-ft |
| hectare-metre to cubic metre | 10000 m³ |
| hectare-metre to Mcft | 0.3531466672 Mcft |
| hectare-metre to MAF | 0.000008107131938 MAF |
Show 2 more units
| hectare-metre to megalitre | 10 ML |
|---|---|
| hectare-metre to gigalitre | 0.01 GL |
Frequently asked questions
How many cubic kilometres are in 1 hectare-metre?
1 ha·m = 0.00001 km³.
How do I convert hectare-metres to cubic kilometres?
Multiply the value in ha·m by 0.00001, or divide it by 100000. For example, 15 ha·m × 0.00001 = 0.00015 km³.
Is the ha·m to km³ conversion exact?
Yes. Both units are defined exactly, and 1 ha·m is exactly 0.00001 km³.
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 Hectare-metres to Cubic Kilometres (ha-m to km3). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/hectare-meters-to-cubic-kilometers/
IEEE
Scientific Converters, "Convert Hectare-metres to Cubic Kilometres (ha-m to km3)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/hectare-meters-to-cubic-kilometers/