A4 · Portrait
210 × 297 mm · ISO 216
1:200 site grid - every 5 mm cell equals 1 metre.
Pulled back to 1:200 for site-wide views. A 5 mm cell now equals one metre, letting you fit a small block of buildings onto a single A3 sheet without losing measurability. Major bold lines at 25 mm give you a 5 m site rhythm. Further reading: A practitioner reading list covers the standards lineage in more depth.
Preferred scale per ISO 5455:1979 for site and block plans.
1:200 emerged as the standard intermediate scale between building and master plan when British and German practices standardised on metric sheet sizes in the 1970s.
Every variant on this page is delivered as a vector SVG with physical millimetre dimensions baked into the file, so a compliant printer driver will reproduce it at exact 1:1 scale by default. Choose the sheet size that matches your printer tray, set scaling to 100 % (never "fit to page"), and verify with the calibration check on our how-to-print guide. Buyer's guide: Comparing the major architectural scale rulers can help you pick the right physical scale rule to use over the printed grid.
210 × 297 mm · ISO 216
297 × 210 mm · ISO 216
297 × 420 mm · ISO 216
420 × 297 mm · ISO 216
420 × 594 mm · ISO 216
594 × 420 mm · ISO 216
216 × 279 mm · ANSI A
279 × 216 mm · ANSI A
216 × 356 mm · US Loose
356 × 216 mm · US Loose
279 × 432 mm · ANSI B
432 × 279 mm · ANSI B