Daylight in a room

Estimates the average daylight factor of a room with the simplified average formula: window area, glass transmittance, maintenance factor, visible sky angle, total surface area and average reflectance. It shows window and floor areas, the window-to-floor ratio, the room index, an estimate for the room centre and a verdict using the common rule (below 2% is not enough, 2–5% is acceptable, above 5% is good).

Fill in the fields, run the tool and review the result. Your input is not added to a public page. Use the learning mode for calculation details.