Wedding invitations can come in various sizes and shapes, but the most common size for a wedding invitation is a 5"x7" card. However, wedding invitations can greatly vary in scale according to how much information you need to include. Here are some other common wedding invitation sizes and shapes:

• 4 3/8” x 5 ¾”
• 4 1/2 x 6 ½”
• 4 1/2” x 6 ½”
• 4.25” x 6”
• 5 ¼” x 7 ¼”
• 6 ¼” x 6 ¼”
• 13.34 × 13.34 cm
• 12.7 × 17.78 cm
• 44.87 × 22.23 cm
• 10.16 × 23.5 cm

Its important to note that the size of the wedding invitation envelope should match the largest element within your invitation bundle. As a rule of thumb, the dimensions of your envelope will increase by ¼ inch for both height and width for the largest part of your invitation bundle. For example, a classic 5” x 7” invitation will come with a 5 ¼” x 7 ¼” envelope.