Interior & storage
Sizing and layout for furniture, storage and rooms, from box counts to unit dimensions. 3 tools, including Lux to lumens calculator, Moving boxes estimator and Room lighting calculator. All free, with no account and nothing to install.
Lux to lumens calculatorConvert a target illuminance in lux into the total light output in lumens a space needs. Lux measures brightness on a surface (lumens per square metre); this tool multiplies your target lux by the floor area and divides by a utilisation factor for real-world losses, then estimates the bulb count.Moving boxes estimatorEstimate how many small, medium and large moving boxes you need from your number of rooms.Room lighting calculatorWork out how much light a room needs and how many bulbs to buy. Pick the room type — it sets the recommended illuminance in lux — enter the dimensions and your bulb's lumen output, and it returns the total lumens required and the number of fixtures, adjusted for tall ceilings.