Pond volume calculator
Estimate pond capacity from separate depth bands, then subtract rocks or equipment once.
Up to 30 positive layers. Sloped walls are approximated by the chosen steps. Layer depth means thickness, not cumulative depth; displacement must leave positive water capacity. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Pond volume calculator
- Enter your measured quantities, units and assumptions.
- Review the calculated result and the stated limits.
- Download the report or plan for your project.
Useful next steps
Describe the pond from top to bottom
Enter one layer per line as length, width and layer thickness. Each layer occupies a separate depth band. Deeper layers cannot be wider or longer than the layer above.
Choose rectangular or elliptical sections
For ellipses, enter full axes. Each band uses constant plan area and vertical sides. Download the depth-by-depth volume breakdown, total capacity and capacity after displacement.
Save the measurements and assumptions
Download CSV and a text or JSON report. The calculation runs on your device. Changing a unit keeps the number you entered, so check both before using the result.