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Aquarium Volume Calculator
Calculate water volume in a rectangular aquarium from internal dimensions and decoration displacement.
- Net water volume, L
- 102
- US gallons
- 26.95
- Volume before displacement, L
- 112
How the calculation works
Liters = length × width × water height / 1000 − displacement; dimensions are in centimeters.
Inputs
- Internal length, cm
- Internal width, cm
- Water height, cm
- Displaced volume, L
Calculation details
Use internal dimensions and actual water height rather than outside glass dimensions.
Enter substrate and decoration displacement separately. This does not determine whether furniture or flooring can support the aquarium.
Updated: 2026-10-02