Quick answer: Most commercial pop up cards fold to A6-to-A5 size (about 4x6 to 5x7 inches) and open to scenes 15-20 cm wide and up to 18 cm tall. They ship in standard envelopes, which keeps postage at the normal flat-card rate.
Everything worth knowing about how big is a pop up card, without the fluff - the mechanisms, the history and the buying logic, in one page.
The standard sizes
| Size | Folded | Opened scene | Postage |
|---|---|---|---|
| Small (A6) | 10.5 x 14.8 cm | 15-18 cm tall | Standard stamp |
| Medium (A5) - most common | 14.8 x 21 cm | 18-25 cm tall | Standard stamp |
| Large/luxury | A5 or larger | 25 cm+ scenes | Check 'large envelope' tier |
Why size discipline matters
Any size ships flat - the engineering constraint is the envelope, not the card. Designs that overstay their envelope earn 'non-machinable' surcharges or crushed corners. Ours are designed envelope-first: the scene is exactly as big as a standard envelope forgives.
Common Misconceptions
- "They're just for kids" - the largest buyer group is adults sending to adults; the engineering is the appeal.
- "They cost too much" - against months of shelf presence, the per-day cost is below any greeting alternative.
- "They arrive broken in the mail" - well-made designs fold flat and travel in rigid envelopes; damage rates are lower than glassware, roughly on par with flat cards.
- "You can't write much inside" - every proper design keeps a full blank panel for the handwritten message.
See the Mechanism in Person
Reading about folds is one thing; opening one is another. These two show the engineering off -
Back To School Clock Greeting CardLaser-cut scene, hand-assembled
Cat Tree 3D Pop Up CardOpens flat, stands for months
Related Guides
Pop Up Card Trends 2027 · What Is Paper Engineering · How Are Pop Up Cards Made
Frequently Asked Questions
Do 3D pop up cards cost more than regular cards?
Yes, typically $12-$39 versus $3-$8 for a flat card, because each one is cut, folded and assembled by hand in multiple layers. In return you get a keepsake most people display for months - or years - instead of tossing it after opening.
How fast can I get one?
We dispatch in 1-3 business days. Standard US shipping is $8 (free over $70), express is $15, and international rates calculate at checkout.
Now that you know how they work -
See Them in 3D
