Home, building & household
Back to all calculators
Home, building & household
Wall area
Calculate wall area of a rectangular room minus openings.
Your result
Complete the fields and calculate.
Example
Wall area
Perimeter × height minus openings gives wall area.
FAQ
Frequently asked questions
How accurate is the result?+
The calculator uses the stated formula and only rounds the display. Accuracy depends on your inputs.
Is this calculator really free?+
Yes. Use it as often as you like without an account or registration.
Are my entries stored?+
The calculation runs directly in your browser. Calculator values are stored locally only when you explicitly add a result to “My results”. Favourites and history also remain locally on your device.