Gallons per Square Foot Calculator

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Calculates the gallons of liquid needed to cover one square foot at a specific depth.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Depth (inches) in the units shown.

Step 2

Read Cubic Inches per Square Foot and Gallons per Square Foot in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Depth (inches): 1 in

Cubic Inches per Square Foot: 144 in³; Gallons per Square Foot: 0.6233766234 gal/ft²

Depth (inches): 2 in

Cubic Inches per Square Foot: 288 in³; Gallons per Square Foot: 1.246753247 gal/ft²

Depth (inches): 0.5 in

Cubic Inches per Square Foot: 72 in³; Gallons per Square Foot: 0.3116883117 gal/ft²

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