About this tool
Paper measurement to real size at 1:50, 1:100, 1:200 or any scale, plus the area factor.
Real = paper·N; paper = real/N; areas scale by N².
Formula: L_real = L_paper · N A_real = A_paper · N²
Example: Scale 1 : N = 100, Measured on paper (mm) = 45 → Real length from paper (m) = 4.5, Area factor (N²) = 10,.
Scale is exact only if the drawing is plotted at 100 %. Nested scales multiply: 1:100 on a 1:2 copy is 1:200.
Quick steps
- Enter your values — every field shows its unit.
- Press Calculate (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
The calculation runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Drawing Scale Calculator work?
Real = paper·N; paper = real/N; areas scale by N².
What should I keep in mind?
Scale is exact only if the drawing is plotted at 100 %. Nested scales multiply: 1:100 on a 1:2 copy is 1:200.
Is my data sent anywhere?
No. The numbers stay on your device; the page only shows the result.