Room answers. One exact question each, worked out.
What size rug, how high to mount the TV, how much paint: each question answered with a number in cm and inches, its working, and the rule and source behind it.
Rugs
Sofas and doors
TVs
- How high to mount a 55 inch TV?Centre 105 cm, bottom edge 71 cm
- How high to mount a 65 inch TV?Centre 105 cm, bottom edge 64.5 cm
- How high to mount a 75 inch TV?Centre 105 cm, bottom edge 58 cm
- How far to sit from a 55 inch TV?1.7–2.3 m
- How far to sit from a 65 inch TV?2.0–2.7 m
- How far to sit from a 75 inch TV?2.3–3.1 m
- How high to mount a TV above a fireplace?Centre 164 cm above a 120 cm (47 in) mantel
- What size TV for a 3 m viewing distance?73-inch to 99-inch
Pictures
Curtains
Dining tables
Pendant lights
- How high to hang pendant lights over a kitchen island?80 cm (31 in) above the worktop
- How high to hang a pendant light with a 9 ft ceiling?88 cm (35 in) above the table
- What size chandelier for a 12x12 room?49–61 cm (19–24 in)
- How low can a pendant light hang in a hallway?210 cm (83 in) from the floor, at the lowest
Your own sizes: the pendant light height and size calculator →
Lighting
Paint
Wallpaper
Room sizes
Home sizes
Each answer is worked out by the same code as its calculator, for the sizes it names. Every rule cites its source, with the date we last checked it.