Daylight Study

Compare rooms, windows and rooflights with a transparent early-stage daylight proxy.

Concept use only. This is not a BS EN 17037, BRE BR 209, planning, LEED or climate-based daylight simulation. It deliberately issues no pass/fail verdict.

Region

Units

Room

Study / room reference

Width (m)

Depth (m)

Height (m)

Average reflectance (0–1)

Model / drawing source

Apertures

Study result

— %
daylight proxy

—Floor area

—Gross aperture area

—Effective aperture

—Opening / floor

Enter the room and apertures, then calculate.

Calculation method View formula, inputs and sources

Select an application type and calculate a result.

Method

—

Inputs used

Calculation trace

Assumptions and exclusions

Save / load

Name

Project

Saved data