Floor Area Calculator Sq Ft Sq M

Floor Area Calculator

Calculate total floor area from multiple rooms — sq ft and sq m with room-wise breakdown for architects and interior designers.

Your data never leaves your browser — all processing happens locally on your device.

About this tool

Add multiple rooms with length and width to calculate total floor area in sq ft and sq m. Room-wise breakdown for architects preparing area statements, interior designers estimating flooring quantities and homeowners verifying carpet area. Input in feet or metres — instant conversion between sq ft and sq m. Free browser calculator.

How to use the Floor Area Calculator

  1. 1

    Choose input unit

    Select feet or metres for room dimensions.

  2. 2

    Add rooms

    Enter name, length and width for each room.

  3. 3

    Review total area

    See combined sq ft, sq m and per-room breakdown.

Frequently Asked Questions

Can I add more than two rooms?

Yes — click Add room for as many spaces as needed. Each room shows its individual area in the breakdown.

Does this include wall thickness?

No — enter clear internal dimensions for carpet-area style calculation. Add wall thickness separately for built-up area.

Sq ft vs sq m conversion?

Results show both units automatically — 1 sq m = 10.764 sq ft.

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