Architectural Scale Converter
Convert between drawing scale and real size at any imperial, engineering or metric scale. Feet-inches to the nearest 1/16 inch, with the rounding residual shown.
Architectural Scale Converter
Type into either field — the other follows. Imperial output is written the way it goes on a drawing, to the nearest 1/16", and the rounding it applied is shown.
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| Scale factor | — |
|---|---|
| Real size — imperial | — |
| Real size — metric | — |
| 1 drawing inch equals | — |
| 1 drawing mm equals | — |
Imperial architectural scales are the ratio of drawn length to real length: 1/4" = 1'-0" means 0.25 in stands for 12 in, i.e. 1:48. Engineering scales are 1 in to a whole number of feet.