It has long been thought to make a calculator on the illumination of the room, and finally implemented it.
This calculation is necessary in order to understand what and how many light bulbs you need to put in the room so that the illumination satisfies the norms for SNiP.

Operating procedure:
1. Set the geometric dimensions of the room: length, width and height (this will help you a picture)
2. Select room type
3. Set the general background of the room (for example, if you have a white ceiling, green wallpaper and gray floor, then select "Gray surface", if the white ceiling, blue wallpaper and gray floor, then you can choose "Light surface")
4. Choose the type of lamp (incandescent, fluorescent lamp or LED lamp)
5. Set the lamp power

For reference:
- standards of illumination according to SNiP II-4-79 "Natural and artificial lighting"
- light output of incandescent lamps 16 Lm / W
- luminous efficiency of fluorescent lamps 105 Lm / W
- light output of LED lamps 210 Lm / W