Architect Scale · 1:50
1:50 plan grid - every 20 mm cell equals 1 metre.
Profession hub
For Architects
Plan, section and axonometric grids calibrated to ISO 5455 and ANSI Y14.1.
Who this collection is for
Architects work across more grid types in a week than most disciplines do in a career - a 1:50 fit-out plan on Monday, a 1:200 site axonometric on Tuesday, a 1:20 wall-section on Wednesday, an isometric joint detail on Thursday. Every sheet on this page is calibrated to the preferred-scales recommendation in ISO 5455:1979 and the title-block conventions of ISO 5457:1999, so architectural studios can drop them straight onto a parallel rule and start drafting. Recommended reading: A reading list of essential references can complement these grids.
Why curated grids matter
Every discipline reaches for a slightly different palette of printable paper. The wrong grid can quietly distort a sketch - too dense for the brief, too sparse for the detail, calibrated to a scale you don't actually use. This page gathers the 7 grids most-used by working for architects practitioners, with the standards and history behind each one. Read first: How to print at exactly 1:1 before printing anything that needs to be measured.
Recommended grid types · 7
Architect Scale · 1:100
1:100 plan grid - every 10 mm cell equals 1 metre.
Architect Scale · 1:200
1:200 site grid - every 5 mm cell equals 1 metre.
Architect Scale · 1:20
1:20 detail grid - every 25 mm cell equals 500 mm on site.
Isometric 30° · 5 mm
The textbook isometric grid - three axes at 120°, 5 mm cell pitch.
Planometric 30°/90°
Planometric - true plan rotated 30°, verticals stay vertical.
Cross-Section · 5 mm
Open 5 mm grid with 25 mm bold reference lines.