Drawing Scale Converter
Turn a measurement taken off a scale drawing into the real-world size.
Results
Real size
2.2500
m
Real size
225.00
cm
Real size
2250.0
mm
What this tool does
Measure the drawing in millimetres, enter the scale denominator — 50 for a 1:50 plan — and read the real size in metres, centimetres and millimetres. Remember that printed drawings are only at their stated scale if they were printed at 100 %.
Formula
real size = measurement on the drawing × scale denominator
Variables
| Symbol | Meaning | Unit |
|---|---|---|
m | Drawing measurement | mm |
s | Scale 1 : | — |
R | Real size | m |
RC | Real size | cm |
RM | Real size | mm |
Worked example
- Drawing measurement45 mm
- Scale 1 :50
- Real size2.2500 m
- Real size225.00 cm
- Real size2250.0 mm
Limitations
- Mixing units is the most common source of error. Convert every input to the units shown next to each field before calculating.