A3 vs A4 laminator: which size do you need?
An A4 laminator takes documents up to 210 × 297 mm — standard letters, certificates, ID cards and menus. An A3 laminator takes up to 297 × 420 mm, exactly twice the area of A4, and still laminates every smaller size. Buy A3 only if you actually laminate posters, classroom charts, plans or double-page spreads; if everything you laminate fits on a normal sheet of paper, an A4 machine is smaller, lighter and cheaper.
- Choose A4
- Documents, certificates, ID cards, recipes, menus. The most common choice for home and small offices.
- Choose A3
- Posters, classroom material, notices, drawings, plans. An A3 machine also laminates A4 and smaller — never the other way round.




