What is the usual size of wedding invitations?

In the UK, wedding invitations typically come in two standard sizes. A6 is the most common for a single card, measuring 105 by 148 millimetres, roughly the size of a postcard. It suits a simple design with just the key details. A5, measuring 148 by 210 millimetres, is larger and often used for folded invitations or when you want to include extra information like a map or accommodation list.

Some couples choose square invitations, which are also popular, but they cost more to post because they do not fit standard envelopes. If you want a classic look, stick to A6 or A5. These sizes fit standard envelopes, which keeps postage costs down and makes addressing easier.

Think about how much text you need. A6 works well for a short invitation with a separate details card. A5 gives you more room for wording and can be folded to create a booklet. Whatever size you choose, make sure the card weight suits the size, so it does not bend in the post.

Before you finalise, check with your printer or online template supplier, as some offer slightly different dimensions. Always order a sample to confirm the size feels right in your hand.