Donut Shaped Volume Calculators

Spike's Calculators

To calculate the volume of a donut shaped footing you have to enter the inner circle diameter, the width of the footing and the required depth.

Donut Shape Volume Calculator - Imperial

Inner Diameter:   ft
Footing Width:   ft
Depth of Footing:   in.
     
Amount of concrete needed:
Cubic Yards:   yd ³
Cubic Meters:   m ³
Calculator For Donut Shape

Donut Shape Volume Calculator - Metric

Inner Diameter:   m
Footing Width:   m
Depth of Footing:   mm
Amount of concrete needed:
Cubic Meters:   m ³
Cubic Yards:   yd ³
Calculator For Donut Shape

When Ordering Concrete

This concrete calculator will help you in estimating the amount of concrete needed for your project. The amount given as needed, does not include any waste. It is recommended, depending on the job you are doing, to add anywhere from an extra 4% to 10% to your concrete order to make sure you have enough concrete to finish the job. Ask when ordering the concrete. They will be able to give you a good idea of what is needed.
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