Greeting Card Panel Layout Calculator

Greeting Card Panel Layout

Card-making requires precise panel widths so the card folds flat and any printed design aligns correctly.

Common fold styles:

1. Single-fold (most common):

• Width = full sheet
• Two equal panels meet at center fold
• Front and back are same height
• Bottom or side fold both work

2. Tent fold:

• Same as single fold but the crease runs across the top, not down the side
• The folded card keeps the full sheet width and half the sheet height
• Common for greeting cards displayed standing up, and for place cards

3. Gate fold:

• Two flaps fold inward from the left and right edges and meet at the center
• Each flap is a QUARTER of the sheet; the center section is the other half
• On an 11 inch sheet that is 2.75 / 5.5 / 2.75, scored at 2.75 in and 8.25 in
• The closed card is half the sheet wide, same as a single fold

4. Z-fold (concertina with single Z):

• 3 equal panels, alternating direction
• Front, middle, back at equal width
• Each panel = sheet width / 3

5. Accordion fold (multi-pleat):

• Equal panels, pleats alternating
• 4 panels: each = width / 4
• 6 panels: each = width / 6
• 8 panels: each = width / 8

6. Double-parallel fold:

• Folded in half, then in half again the same direction
• 4 panels, all the same width
• Width per panel = sheet / 4
• Not the same thing as a true French fold, which is folded twice at right angles and gives a card half the sheet width AND half its height

7. Pop-up card:

• Single fold or gate fold base
• Internal pop-up tabs/spring need their own calculation

Standard greeting card sizes (US):

Cardstock weight considerations:

• 80-110 lb (216-298 GSM): standard, holds creases well
• 110-140 lb (298-380 GSM): heavyweight, better for gate folds
• Score before folding (use a bone folder or scoring tool) for clean edges
• Heavier paper (over 130 lb) may require pre-creasing

Bleed and trim allowances: For printed cards, add 1/8 inch (3 mm) of bleed on all panels that print to the edge. Trim final card 1/8 inch smaller than your sheet plan if printed at home (printer tolerance).

Common errors to avoid:

1. Forgetting that “card width” means folded width, not sheet width
2. Gate-fold flaps cut too wide. Each one is a quarter of the sheet, so the two of them just meet in the middle and neither overlaps the other.
3. Accordion folds with odd panel widths, which will not close properly
4. Forgetting the 0.5-1mm “swing” allowance in z-fold for clean closure

More on that swing allowance, since it is the error most people meet and the one that looks like a mistake in your measuring rather than a property of paper. Any panel that folds inside another has to travel around the thickness of the fold, so cutting three exactly equal panels for a z-fold gives a card whose inner edge sticks out by a hair, or which springs open instead of lying flat. The fix is to take 0.5 to 1 mm off each inner panel and give it back to the outer one. On 216 GSM card 0.5 mm is right, on 380 GSM go to 1 mm.

Enter an allowance in the box and the calculator applies it. Leave it at zero and you get the clean equal-panel arithmetic, which is what you want if you are only planning the layout.

Precision tools:

• Bone folder: $5-15 (essential)
• Scoring board (Martha Stewart, Crafter’s Companion): $30-60
• Paper trimmer with score blade: $15-50
• Score-and-fold ruler: $10-20