All You Need To Know About A7 Envelope Size

A7 envelopes are small envelopes that measure 5 1/4 inches by 7 1/4 inches. They are often used for enclosing invitations and greeting cards and are a popular choice for mailing out smaller, lightweight items such as postcards. The A7 size is part of the A series of envelope sizes, which are based on the standard paper size system used in the United States. Other popular sizes in the A series include A2, A6, and A10.

The dimensions of an A7 envelope are 5.25 inches (13.3 cm) in height and 7.25 inches (18.4 cm) in width.

If you’re looking for the right envelope size to fit your card, it’s easy to find – simply match the size type of your card and you’ll be able to select the correct envelope size.

To give you more information about A7 envelope size, I’ll explain this type of envelope in detail in the following sections.

A7 Envelope Size

One of the key benefits of A7 envelopes is their versatility. They can be used for a wide range of occasions, including birthdays, baby showers, bridal showers, and more. Whether you’re sending out invitations to a small gathering or thanking someone for a thoughtful gift, A7 envelopes provide a stylish and professional way to mail out your correspondence.

An A7 envelope is just slightly larger than the size of an A7 card. The envelope has the dimensions 5.25 x 7.25 inches or 13.3 x 18.4 cm.

Related: A6 Envelope Size

Uses of A7 Envelops

A7 envelopes are often used for the following purposes:

  1. Invitations: A7 envelopes are a common choice for mailing out invitations, particularly for smaller events such as birthdays, baby showers, and bridal showers.
  2. Greeting cards: The size of A7 envelopes is well-suited for enclosing greeting cards, such as thank-you cards, birthday cards, and anniversary cards.
  3. Postcards: A7 envelopes can be used to mail out postcards, particularly when the postcard is smaller than the standard size.
  4. Other lightweight items: The small size and lightweight nature of A7 envelopes make them a good choice for mailing out other small items, such as flyers, brochures, and promotional materials.

How To Use A7 Envelopes?

Using A7 envelopes is easy! Here are the steps to follow:

  1. Measure your items: Make sure that your items will fit comfortably inside the envelope. A7 envelopes are designed to hold small, lightweight items such as invitations, greeting cards, and postcards.
  2. Place your items in the envelope: Carefully insert your items into the envelope, making sure that they are not bent or creased.
  3. Seal the envelope: Once your items are inside the envelope, use the adhesive strip or lickable glue on the flap to seal the envelope. Make sure the envelope is securely sealed to prevent your items from falling out during transit.
  4. Address the envelope: On the front of the envelope, write the recipient’s name and address in the center. You can also include a return address in the top left corner.
  5. Mail the envelope: Take your sealed and addressed A7 envelope to a post office or drop it in a mailbox. You can also use a postage stamp or meter to pay for mailing if you are sending the envelope through traditional mail.

Using A7 envelopes is a quick and easy way to mail out small, lightweight items. Just make sure to follow these simple steps to ensure that your items reach their destination safely.

Related: A4 Envelope Size


A7 envelopes are an ideal choice for mailing out smaller, lightweight items such as invitations, greeting cards, and postcards. They have the dimensions of 5.25 x 7.25 inches (13.3 x 18.4 cm) and can be sealed with either a moistened adhesive strip or a sealant such as a glue stick or envelope moistener.


How do I seal an A7 envelope?

You can seal an A7 envelope by moistening the adhesive strip on the flap and pressing it down, or by using a sealant such as a lickable glue stick or envelope moistener.

Can I use an A7 envelope to mail out postcards?

Yes, you can use an A7 envelope to mail out smaller postcards that are smaller than the standard-size postcard. Make sure to add a postage stamp or other form of postage on the envelope before mailing.

What other items can I mail in an A7 envelope?

You can mail out other lightweight items such as flyers, brochures, and promotional materials in an A7 envelope. Make sure to add the appropriate amount of postage before mailing.

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