A4 · Portrait
210 × 297 mm · ISO 216
Imperial 1/2" grid - kitchen, bath, and millwork detail scale.
A 1/2 inch (12.7 mm) cell grid at 1/2" = 1'-0", twice the resolution of a standard residential plan. Used for the high-detail rooms - kitchens, baths, custom millwork, built-ins - where appliance and cabinet dimensions need to read precisely. Further reading: A practitioner reading list covers the standards lineage in more depth.
Recommended scale in ANSI Y14.1 for enlarged plan and detail drawings.
1/2" plans became the U.S. residential standard for kitchen-and-bath documentation when the National Kitchen and Bath Association formalised drawing conventions in the 1960s.
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