Cubic Meter per Day to Cubic Foot per Second (m³/d to CFS)
Convert m³/d to CFS — Flow Rate converter
Also written as m3/d to CFS.
One cubic meter per day equals 0.0004087346 CFS, so to convert cubic meters per day to cubic feet per second you multiply the value by 0.0004087346. A cubic meter per day is smaller than a cubic foot per second — going the other way, 1 CFS = 2446.58 m³/d. For example, 10 m³/d = 0.0040873457 CFS and 50 m³/d = 0.02043673 CFS.
1 m³/d = 0.0004087346 CFS
Cubic Meter per Day to Cubic Foot per Second formula
1 Cubic Meter per Day = 0.0004087346 CFS
Worked examples
- 25 m³/d = 0.01021836 CFS
- 100 m³/d = 0.04087346 CFS
Cubic Meter per Day to Cubic Foot per Second conversion table
| Cubic Meter per Day (m³/d) | Cubic Foot per Second (CFS) |
|---|---|
| 1 | 0.0004087346 |
| 2 | 0.0008174691 |
| 3 | 0.0012262037 |
| 5 | 0.0020436728 |
| 8 | 0.0032698765 |
| 10 | 0.0040873457 |
| 12 | 0.0049048148 |
| 15 | 0.0061310185 |
| 20 | 0.0081746914 |
| 25 | 0.01021836 |
| 50 | 0.02043673 |
| 100 | 0.04087346 |
| 250 | 0.10218364 |
| 500 | 0.20436728 |
| 1000 | 0.40873457 |
Which gallon, and which trade
The single most expensive mistake in flow conversion is the gallon. A US liquid gallon is 3.785411784 litres; an imperial gallon is 4.54609 litres. US GPM and imperial GPM differ by about 20%, and pump datasheets frequently do not say which one they mean. Check the manufacturer's country of origin before trusting a GPM figure.
Different trades default to different units for the same physical quantity: HVAC and compressed air work in CFM, plumbing and pumps in GPM or LPM, and process and water engineering in m³/h or L/s. A specification that mixes them is usually quoting different equipment, not different flows. On this page, 1 m³/d = 0.0004087346 CFS.
Frequently asked questions
How many cubic feet per second are in one cubic meter per day?
One cubic meter per day equals 0.0004087346 cubic feet per second (CFS).
How many cubic meters per day are in one cubic foot per second?
One cubic foot per second equals 2446.58 cubic meters per day (m³/d).
How do you convert cubic meters per day to cubic feet per second?
1 Cubic Meter per Day = 0.0004087346 CFS. Use the calculator above for any value.
What is 5 m³/d in CFS?
5 m³/d = 0.0020436728 CFS.
What is 100 m³/d in CFS?
100 m³/d = 0.04087346 CFS.
What is 10 m³/d in CFS?
10 m³/d = 0.0040873457 CFS.
What is 20 m³/d in CFS?
20 m³/d = 0.0081746914 CFS.
What is 50 m³/d in CFS?
50 m³/d = 0.02043673 CFS.
What is 500 m³/d in CFS?
500 m³/d = 0.20436728 CFS.
Is a cubic meter per day bigger than a cubic foot per second?
No. A cubic meter per day is smaller — one cubic meter per day equals 0.0004087346 cubic feet per second, while one cubic foot per second equals 2446.58 cubic meters per day.