Guides

Educational guides and tutorials related to our free online tools.

Gable wall with base and height measurement lines showing how to calculate square feet triangle area using base times height formula
Guides

calculate square feet triangle

Gable walls, corner lots, and angled garden beds don’t fit the length-times-width formula. Here’s how to calculate square feet triangle areas correctly, and the one step almost everyone forgets.

Room diagram comparing flat square footage floor measurement to three-dimensional cubic footage volume with ceiling height labeled
Guides

sq ft vs cubic ft

An HVAC unit sized by square footage alone is often the wrong size. Here’s the real difference between sq ft vs cubic ft and when each one actually applies.

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