Inputs

Area zones

Add one row for each relevant space, item, zone, document, or measurement set.

Row 1

Zone label Enter the project label, note, or reference used for this calculation. Length m Enter a numeric project value in m at or above 0.01. Width m Enter a numeric project value in m at or above 0.01.

Row 2

Irregular edge allowance % Enter a numeric project value in % between 0 and 50.

Raw area -- m2

Planning area -- m2

Zone count --

Largest zone area -- m2

Geometry status --

Calculation details

Raw area: -- m2
Planning area: -- m2
Zone count: --
Largest zone area: -- m2
Geometry status: --

Important notes

This calculator does not declare Australian standards compliance.
Use current product documentation and project-specific professional review where required.

Formula

Worksheet-style planning support. Record assumptions and review missing product or site data before relying on the output.

Estimate total planning area from rectangular zones and an allowance for irregular edges.

Irregular Room Area Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.

Inputs

Results

Formula