Interiors Calculators
Measure once, order once
Four free tools for the measurements that decide a room. Each one draws your space to scale, tells you what to order, and explains the reasoning — so you can check it against your own tape.
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CalculatorWallpaper Calculator
How many rolls you need, wall by wall, with the pattern repeat and match type accounted for — and every roll size costed against your walls.
Count the rolls -
CalculatorSofa Size Calculator
What size sofa fits, and — the part people forget — whether it will get through the doorway, round the hall and up the stairs.
Size a sofa -
CalculatorPaint Calculator
Litres and tins for walls, ceiling and woodwork, adjusted for your surface, finish and how far the colour is travelling.
Work out the litres -
CalculatorRug Size Calculator
What size rug you need for a living room, dining room, bedroom or hallway — with the rug drawn to scale around your own furniture.
Size a rug
3 habits that save a return
- 01
Use a steel tape
A fabric tape sags and reads long. Measure at waist height, twice, and write it down — never trust the number you are holding in your head on the way downstairs.
- 02
Rooms are never square
Measure each wall separately, especially in an older house. A room out by 4cm across its length will lose you a drop of wallpaper or foul the end of a sofa.
- 03
Measure the route in
Doorways, turns, stairs and lifts. More furniture goes back on the van for failing the hallway than for failing the room it was bought for.
