Sqratch Tools / Site & Planning / Drawing Scale Converter
Drawing Scale Converter
Three modes: measure on paper and get real dimensions, size a real element on paper, or find the tightest standard scale that fits your site on a given ISO sheet.
Basis & Assumptions
- Sheet sizes per ISO 216: A0 841×1189, A1 594×841, A2 420×594, A3 297×420, A4 210×297 (mm, trimmed).
- The suggested-scale list (1:1 … 1:2500) reflects common architectural practice — any scale is mathematically valid.
For quick design checks and study — not a substitute for your local Development Control Regulations, NBC provisions, or a licensed professional's judgement. Always verify against the bye-laws that apply to your site.
More Tools
Area Unit Converter
Convert between sq ft, sq m, sq yd (gaj), acres, hectares, guntha, cents and grounds — instantly and exactly.
Open →FSI / FAR Calculator
Plot area × FSI = permissible built-up area, with premium FSI and TDR as separate inputs. Works in both directions.
Open →Ramp Gradient Calculator
Rise, run, gradient (1:x), percentage and degrees — plus the ramp length you need to hit a target gradient.
Open →