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