Convert TMC to MCM
1 TMC = 28.31684659 million cubic metres (MCM). 1 MCM = 0.03531466672 TMC. Example: 1 TMC = 1 × 28.31684659 = 28.31684659 MCM.
Also searched as TMC to MCM, tmcft to million cubic meters, 1 TMC in MCM and TMC to cubic metres.
1 TMC = 28.31684659 MCM
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk TMC to MCM converter to paste a column from Excel.
How to Convert TMC to MCM
- 1 TMC = 28.31684659 MCM
- 1 MCM = 0.03531466672 TMC
- Example: convert 1 TMC to MCM: 1 TMC = 1 × 28.31684659 MCM = 28.31684659 MCM
Formula
MCM = TMC × 28.316846592
Derivation from SI units:
- 1 TMC = 10⁹ ft³ = 28.316846592 MCM.
- 1 MCM = 10⁶ m³ = 1 hm³ (cubic hectometre).
Both units are defined exactly, so the factor is exact. TMC definition: TMC; MCM definition: million cubic metres.
Worked examples
- 1 TMC is 28.31684659 MCM.
1 TMC × 28.31684659 = 28.31684659 MCM - Karnataka’s yearly Cauvery release of 177.25 TMC to Tamil Nadu is 5019.161058 MCM.
177.25 TMC × 28.31684659 = 5019.161058 MCM
TMC to MCM conversion table
| TMC | MCM |
|---|---|
| 0.5 TMC | 14.1584233 MCM |
| 1 TMC | 28.31684659 MCM |
| 5 TMC | 141.584233 MCM |
| 10 TMC | 283.1684659 MCM |
| 20 TMC | 566.3369318 MCM |
| 50 TMC | 1415.84233 MCM |
| 100 TMC | 2831.684659 MCM |
| 177 TMC | 5012.081847 MCM |
| 200 TMC | 5663.369318 MCM |
| 1000 TMC | 28316.84659 MCM |
Where it's used
Reservoir storages and tribunal allocations in TMC are converted to MCM (million m³) for CWC bulletins and SI reports. Multiply by 28.316846592.
TMC to other water volume units
| Conversion | 1 TMC equals |
|---|---|
| TMC to MCM | 28.31684659 MCM |
| TMC to BCM | 0.02831684659 BCM |
| TMC to acre-foot | 22956.84114 acre-ft |
| TMC to cubic metre | 28316846.59 m³ |
| TMC to Mcft | 1000 Mcft |
| TMC to MAF | 0.02295684114 MAF |
| TMC to hectare-metre | 2831.684659 ha·m |
| TMC to megalitre | 28316.84659 ML |
Show 2 more units
| TMC to cubic kilometre | 0.02831684659 km³ |
|---|---|
| TMC to gigalitre | 28.31684659 GL |
Frequently asked questions
How many MCM is 1 TMC?
1 TMC = 28.31684659 MCM exactly, since TMC is 10⁹ cubic feet.
What does TMC stand for?
Thousand million cubic feet, i.e. one billion (10⁹) cubic feet, sometimes written TMC ft or TMCFT.
How many million cubic metres are in 1 TMC?
1 TMC = 28.31684659 MCM.
How do I convert TMC to million cubic metres?
Multiply the value in TMC by 28.31684659. For example, 1 TMC × 28.31684659 = 28.31684659 MCM.
Is the TMC to MCM 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
- 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".
- 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 TMC to MCM. Retrieved October 29, 2026, from https://scientificconverters.com/water-volume/tmc-to-mcm/
IEEE
Scientific Converters, "Convert TMC to MCM," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/water-volume/tmc-to-mcm/