Calculators
Quickly work out what you need for your planning. No sign-up; your values stay in your browser.
Living area calculator (WoFlV)
Calculate living area under the German WoFlV: rooms in full, sloping ceilings half, balconies a quarter. Free, no sign-up.
Stair calculator
Calculate a stair: number of steps, rise and going from the storey height, checked against the step rule and DIN 18065. Free.
Tile and paint calculator
Work out tiles with waste and wall paint for a room: number of tiles, square metres and litres. Free, no sign-up.