Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Elliptical water surface and area-weighted mean depth. Maximum depth should not be substituted for mean depth.
Example Calculation
- Full major diameter: 10 m
- Full minor diameter: 6 m
- Measured mean depth: 1 m
Full major diameter = 10 m; Full minor diameter = 6 m; Measured mean depth = 1 m. Primary result: 47.1238898038.
Frequently asked questions
How do I use this calculator?
Enter full major diameter, full minor diameter, measured mean depth. The result updates automatically. Use Reset to restore the example values.
What method does it use?
V=π ×major ×minor/4 ×mean depth.. Elliptical water surface and area-weighted mean depth. Maximum depth should not be substituted for mean depth.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.