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`"Weight of Stored Water" = V *8.34("lb"/"gal")`

Enter a value for all fields

The **Weight of Water** calculator computes the weight (mass) of a volume (V) of water.

**INSTRUCTIONS**: Choose units and enter the flowing;

- (
**V**) This is the volume of water

**Water Weight (W)**: The calculator returns the weight of water in pounds. However, this can be automatically converted to other mass and weight units (e.g. kilograms or metric tons) via the pull-down menu.

The Density of Water is 1,000 kilograms per cubic meters. The formula for mass is:

where:

- M is the mass
- D is the density (mean density)
- V is the volume.

The mean density (mD, μD or ρ) of many common substances, elements, liquids and materials can be found by clicking** HERE **(e.g. the μD_{(water)} is 1,000 kg/m^{3}).

- Lancaster, Brad, and Joe Marshall. Rainwater Harvesting for Drylands. Vol. 1. Tucson, AZ: Rainsource, 2006. Print.