Pond Size Calculator

Calculate pond dimensions and surface area from target volume. Enter volume, shape, and depth. Get required length, width, diameter, and area in m²/ft². Informational only—verify with suppliers. Explore more tools on free calculators on CalculatorBolt.

Calculator

Enter volume in m³ or liters.
Required Dimensions
Surface Area
Volume

How it works

Rectangular: Base Area = Volume / Depth; Length = Width = sqrt(Base Area). Circular: Radius = sqrt((Volume/Depth)/π). Oval: Width = sqrt((Volume/Depth)/π); Length = 2×Width. Surface Area calculated accordingly.

Inputs explained

Target Volume (m³ or L), Pond Shape (rectangular, circular, oval), Average Depth, Units, Output Units.

Example

Target 15,000 L (15 m³), Circular, 1 m depth → Base Area = 15 / 1 = 15 m² → Radius = sqrt(15/π) ≈ 2.185 m → Diameter ≈ 4.37 m → Surface Area ≈ 15 m².

Tips & notes

  • Use average depth for irregular ponds.
  • For rectangular ponds, we assume a square shape for simplicity.
  • Always measure accurately for best results.

FAQs

Divide volume by depth to get base area, then derive dimensions. The calculator does this for you.

Small garden pond: ~5 m³ (surface area ~5 m²). Medium koi pond: ~36 m³ (surface area ~36 m²).

It provides an estimate. Actual dimensions may vary by shape irregularities. Measure on-site for accuracy.

No. Everything runs in your browser. Use Export or Share Link to save your configuration.

Disclaimer

Informational estimate only. Actual pond dimensions may vary by shape irregularities. Consult suppliers for accurate estimates.

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Author: CalculatorBolt Editorial Team
Reviewed by: Construction Editor (Cost Estimator)
Published: • Updated: