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Heating Degree Days

Calculate heating degree days with clear inputs, formula guidance, and practical result checks.

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Calculator Details

CategoryConstruction

Inputs2

UseFree

RunsIn your browser

Before You Calculate

Confirm the value for Base temperature (u00b0F).
Confirm the value for Average outdoor temperature (u00b0F).

Why You Can Trust It

Calculations run instantly in your browser. Your entries aren't sent to or stored on a server.

Written By

Robert Threadgill
Founder

Founder of Simple Calculator Tools. Builds and tests every calculator on this site personally before publishing.

Base temperature (u00b0F)

Average outdoor temperature (u00b0F)

Result

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