Convert BCM to TMC
1 billion cubic metres (BCM) = 35.31466672 TMC. 1 TMC = 0.02831684659 BCM. Example: 15 BCM = 15 × 35.31466672 = 529.7200008 TMC.
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1 BCM = 35.31466672 TMC
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BCM to TMC converter to paste a column from Excel.
How to Convert BCM to TMC
- 1 BCM = 35.31466672 TMC
- 1 TMC = 0.02831684659 BCM
- Example: convert 15 BCM to TMC: 15 BCM = 15 × 35.31466672 TMC = 529.7200008 TMC
Formula
TMC = BCM × 35.31466672149
Derivation from SI units:
- 1 BCM = 10⁹ m³ = 1000 MCM = 1 km³.
- 1 TMC = 10⁹ ft³ = 28.316846592 MCM.
- 1 BCM = 1000 MCM ÷ 28.316846592 MCM per TMC = 35.31466672149 TMC
Both units are defined exactly, so the factor is exact. BCM definition: billion cubic metres; TMC definition: TMC.
Worked examples
- A reading of 2 BCM converts to 70.62933344 TMC.
2 BCM × 35.31466672 = 70.62933344 TMC - A value of 30 BCM is 1059.440002 TMC.
30 BCM × 35.31466672 = 1059.440002 TMC
BCM to TMC conversion table
| BCM | TMC |
|---|---|
| 0.1 BCM | 3.531466672 TMC |
| 0.5 BCM | 17.65733336 TMC |
| 1 BCM | 35.31466672 TMC |
| 2 BCM | 70.62933344 TMC |
| 5 BCM | 176.5733336 TMC |
| 10 BCM | 353.1466672 TMC |
| 30 BCM | 1059.440002 TMC |
| 100 BCM | 3531.466672 TMC |
| 400 BCM | 14125.86669 TMC |
| 1000 BCM | 35314.66672 TMC |
Where it's used
BCM are used for national water resources assessments, while TMC appear in cauvery, Krishna and Godavari tribunal awards. 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 TMC | 35.31466672 TMC |
| BCM to MCM | 1000 MCM |
| BCM to acre-foot | 810713.1938 acre-ft |
| BCM to cubic metre | 1000000000 m³ |
| 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 TMC are in 1 billion cubic metres?
1 BCM = 35.31466672 TMC.
How do I convert billion cubic metres to TMC?
Multiply the value in BCM by 35.31466672. For example, 15 BCM × 35.31466672 = 529.7200008 TMC.
Is the BCM to TMC conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
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).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "cubic foot".
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 TMC. Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/bcm-to-tmc/
IEEE
Scientific Converters, "Convert BCM to TMC," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/bcm-to-tmc/