Education & study
Scale drawing calculator
Convert model or drawing measurements to real dimensions and back.
A clear answer. Here’s how.
A 1:N scale means one drawing unit represents N real units. Converts the input to metres, multiplies or divides by N, then shows metric and imperial results. Assumes a uniform linear scale; area and volume scale by different powers.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Measured length
- 12
- Measurement unit
- cm
- Scale denominator: 1 to …
- 50
- Direction
- Drawing → real size
Example result
- Metres
- 6
- Centimetres
- 600
- Millimetres
- 6,000
- Inches
- 236.220472441
- Feet
- 19.6850393701