Home · Area engine
Room Area Tool
Measure floor area fast before you buy paint, flooring, furniture, or other room-sized materials.
Instant result
Plain-English why
Copyable takeaway
What this means
This is the simplest floor area calculation: multiply the room length by the room width using the same unit for both.
Formula used
Area = length x width
Worked example
A room that is 5 metres long and 4 metres wide has an area of 20 square metres.
Common questions
Can I use feet instead of metres?
Yes. Use the unit switch and keep both measurements in the same unit.
Does this include waste or offcuts?
No. It gives the base area only, so add your own allowance for waste where needed.
Plain-English summary
That is the flat floor area before you add extra allowance for cuts, waste, or awkward corners.
This section translates the result into a short, direct takeaway rather than leaving the page at a bare number.
Read the guide
How to measure a room before buying materials
A practical guide to getting room area right the first time, avoiding common measurement mistakes, and buying the right amount of flooring, paint, or carpet.
Read the guideRelated instruments
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