Sheet sizes you will actually meet

SheetInchesMillimetersWhere it shows up
US Letter8.5 x 11216 x 279US printers, all Craftagram templates
A48.27 x 11.69210 x 297Printers everywhere outside North America
US Legal8.5 x 14216 x 356Long banners and garland strips without seams
A55.83 x 8.27148 x 210Planner inserts, half-A4 booklets
12 x 12 scrapbook12 x 12305 x 305Patterned cardstock; too big for home printers
8.5 x 11 cardstock pack8.5 x 11216 x 279The default craft stock — printable and trimmable

Letter and A4 differ by a quarter inch of width and two-thirds of an inch of height. A template designed inside their shared area prints true on both at 100% — the method (and the test square that proves it) is in how to print at actual size.

US card and envelope pairs

US stationery letters (A2, A6, A7…) name the envelope; the card is cut slightly smaller. The letters do not match international ISO "A" paper sizes, which is a permanent source of ordering mistakes — an ISO A6 sheet (4.1 x 5.8 in) is not the card for a US A6 envelope.

NameEnvelopeCard it fitsNote
A1 (4-bar)3.625 x 5.1253.5 x 4.875RSVP cards, small notes
A24.375 x 5.754.25 x 5.5Quarter-fold letter card — the everyday size; template here
A64.75 x 6.54.5 x 6.25Also fits 4 x 6 photos with room
A75.25 x 7.255 x 7The invitation size
A95.75 x 8.755.5 x 8.5Half-letter cards
#10 business4.125 x 9.58.5 x 11 tri-foldedLetters, gift certificates

Photo, recipe, and index sizes

PieceSizeCraft relevance
Standard photo4 x 6Also the recipe card and postcard size — sleeves and boxes are everywhere
Large photo5 x 7Frames and A7 envelopes
Index card3 x 5Fits A1/4-bar envelopes trimmed; the classic note size
Trading / gift card2.5 x 3.5 (poker), 2.125 x 3.375 (gift card)Sleeve-and-carrier projects
Business card3.5 x 2The same footprint as the classic gift tag — one template serves both

What one letter sheet yields

Yield planning turns a project idea into a shopping count. Assuming a paper trimmer and modest gaps:

PiecePer letter sheetTemplate
3.5 x 2 in gift tags10One-sheet tags
2.5 x 1.5 in labels15Pantry labels
2 x 7 in bookmarks4Bookmarks
6 x 4 in recipe cards2Recipe cards
3.5 x 2 in tent place cards4Place cards
3.5 in flower petals~6Flower petals
2 in favor box1Favor box

For any size not listed, the paper yield calculator checks both orientations and reports the better fit.

Conversions worth taping to the wall

  • 1 inch = 25.4 mm. The test square on every Craftagram template is 25.4 mm exactly.
  • 1/8 in = 3.2 mm, 1/4 in = 6.4 mm, 1/2 in = 12.7 mm — the three clearances that appear in every envelope and box guide.
  • Paper weight: 80 lb cover = 216 gsm; the full conversion table is in the cardstock weight guide.
When a size is "custom"

Half the "custom sizes" at a craft table are a standard size plus clearance. Before drafting from scratch, check whether the insert matches a photo, card, or index size above — standard sizes mean cheap ready-made envelopes, sleeves, and boxes when handmade ones run out of time.

FAQ

Why do US card sizes have envelope-first names?

The "A" announcement-envelope series came from envelope manufacturers; card makers cut cards to fit existing envelopes rather than the reverse. It is why the card is always the odd measurement and the envelope the round one.

Can I print 12 x 12 scrapbook paper at home?

No home letter printer feeds it. Trim it to 8.5 x 11 first, or print elements on letter stock and layer them onto the 12 x 12 sheet.

Is there a metric version of the templates?

The templates are drawn in inches but print identically on A4 at 100% — measurements in millimeters are on this page for checking with a metric ruler (the test square should read 25.4 mm).