Architecture
Room Proportion Calculator
Plug in length and width and see how your room measures against the golden ratio (1:1.618) and other classic proportions. Or: enter just the width and we'll suggest L values.
Why proportion matters
Rooms that feel comfortable usually fall between square (1:1) and double-square (1:2). The golden ratio (1:1.618) gives a balanced, classically pleasing shape. Beyond 1:2.5 a room starts to feel like a hallway.
FAQ
Golden ratio in architecture? +
Phi (~1.618) shows up from the Parthenon to Le Corbusier's Modulor. Not a rule, just a useful starting point — many spaces feel "right" near phi.
Sound problems? +
Square rooms have the worst acoustic resonance (room modes pile up at the same frequencies). 1:1.4:1.9 (Bolt ratio) is a classic recommendation for studios and theaters.
Ceiling height fits in here? +
Yes — see our Ceiling Height to Width Ratio calc for the third dimension.