Convert BCM to Cubic Metres (BCM to m3)
1 billion cubic metres (BCM) = 1000000000 cubic metres (m³). 1 m³ = 1 × 10⁻⁹ BCM. Example: 15 BCM = 15 × 1000000000 = 15000000000 m³.
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1 BCM = 1000000000 m³
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BCM to cubic metre converter to paste a column from Excel.
How to Convert BCM to Cubic Metre
- 1 BCM = 1000000000 m³
- 1 m³ = 1 × 10⁻⁹ BCM
- Example: convert 15 BCM to m³: 15 BCM = 15 × 1000000000 m³ = 15000000000 m³
Formula
m³ = BCM × 1000000000
Derivation from SI units:
- 1 BCM = 10⁹ m³ = 1000 MCM = 1 km³.
- 1 m³ = 10⁻⁶ MCM.
- 1 BCM = 1000 MCM ÷ 0.000001 MCM per m³ = 1000000000 m³
Both units are defined exactly, so the factor is exact. BCM definition: billion cubic metres; Cubic Metre definition: cubic metre.
Worked examples
- A reading of 2 BCM converts to 2000000000 m³.
2 BCM × 1000000000 = 2000000000 m³ - A value of 30 BCM is 30000000000 m³.
30 BCM × 1000000000 = 30000000000 m³
BCM to Cubic Metre conversion table
| BCM | Cubic Metres (m³) |
|---|---|
| 0.1 BCM | 100000000 m³ |
| 0.5 BCM | 500000000 m³ |
| 1 BCM | 1000000000 m³ |
| 2 BCM | 2000000000 m³ |
| 5 BCM | 5000000000 m³ |
| 10 BCM | 10000000000 m³ |
| 30 BCM | 30000000000 m³ |
| 100 BCM | 100000000000 m³ |
| 400 BCM | 400000000000 m³ |
| 1000 BCM | 1000000000000 m³ |
Where it's used
BCM are used for national water resources assessments, 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.
BCM to other water volume units
| Conversion | 1 BCM equals |
|---|---|
| BCM to cubic metre | 1000000000 m³ |
| BCM to MCM | 1000 MCM |
| BCM to TMC | 35.31466672 TMC |
| BCM to acre-foot | 810713.1938 acre-ft |
| BCM to Mcft | 35314.66672 Mcft |
| BCM to MAF | 0.8107131938 MAF |
| BCM to hectare-metre | 100000 ha·m |
| BCM to megalitre | 1000000 ML |
Show 2 more units
| BCM to cubic kilometre | 1 km³ |
|---|---|
| BCM to gigalitre | 1000 GL |
Frequently asked questions
How many cubic metres are in 1 billion cubic metres?
1 BCM = 1000000000 m³.
How do I convert billion cubic metres to cubic metres?
Multiply the value in BCM by 1000000000. For example, 15 BCM × 1000000000 = 15000000000 m³.
Is the BCM to m³ conversion exact?
Yes. Both units are defined exactly, and 1 BCM is exactly 1000000000 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 BCM to Cubic Metres (BCM to m3). Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/bcm-to-cubic-meters/
IEEE
Scientific Converters, "Convert BCM to Cubic Metres (BCM to m3)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/bcm-to-cubic-meters/