What Size Are Regular Envelopes

What is a standard size envelope for USPS?

For a mailpiece to be eligible for First-Class Mail letter rates, it must be at least 3-1/2 inches by 5 inches by 0.007-inch thick, and no more than 6-1/8 inches by 11–1/2 inches by 1/4-inch thick. If the mailpiece falls within these dimensions, it is classified as a letter. Follow these easy steps for letters: 1.

Is 5x7 a standard envelope size?

A7 Envelopes are commonly called 5x7 Envelopes because they are the best envelope for 5 x 7 cards. This size invitation envelope also fits smaller A Sizes inside (A1, A2, A4, A6) as part of an invitation suite.

Is 4x6 a standard envelope size?

A4 Envelopes are commonly called 4x6 Envelopes because they are the best envelope for 4 x 6 cards.

Related Question what size are regular envelopes

Do envelopes have to be flat?

When a flat-size piece of mail is a box or has contents that make the mailpiece rigid, it is classified and priced as a package. All large envelopes (flats) must be rectangular.

Is a 6x9 envelope considered a letter or a flat?

Priority Flat Mail Rate

A 6” x 9” envelope will fit in a USPS Priority Mail 9-1/2” x 12-1/2” envelope and can be mailed for a domestic flat rate of $6.70.

What are the different sizes of envelopes?


Envelope Size Dimensions (mm) To Fit
C7 84 x 114mm A7 size paper, A7 greeting cards
C6 114 x 162mm A6 size paper, C6 greeting cards, postcards
C5 162 x 229mm A5 size paper, A4 paper folded in half
C4 229 x 324mm A4 size paper

What size are A9 envelopes?

What size is an A9 envelope? A9 size envelopes are 5 3/4 x 8 3/4 inches.

How much bigger should an envelope be than a card?

It is a good rule of thumb to choose an envelope that is 1/8 to 1/4 inch larger than your invitation card. This will allow your invitation to fit in your envelope easily without allowing too much wiggle room.

How do you know what size envelope to get?

6-5/8 envelope 6 x 9-1/2 inches 5-3/4 x 9-1/4 inches
9 envelope 8-3/4 x 11-1/2 inches 8-1/2 x 11-1/4 inches
9-1/2 envelope 9 x 12 inches 8-3/4 x 11-3/4 inches
10 envelope 9-1/2 x 12-5/8 inches 9-1/4 x 12-3/8 inches

How big is an A4 envelope?

A guide to envelope sizes

Envelope size guide
Size Suitable paper size Width (cm) x Height (cm)
C4 A4 size 32.4 x 22.9
C5 A5 size (A4 folded in half) 22.9 x 16.2
C6 A6 size 16.2 x 11.4

What size is envelope C5?

162 mm x 229 mm
Envelope Size mm (w x h) in (w x h)
C4 229 mm x 324 mm 9 inches x 12.8 inches
C5 162 mm x 229 mm 6.4 inches x 9 inches
C6 114 mm x 162 mm 4.5 inches x 6.4 inches
C7 81 mm x 114 mm 3.2 inches x 4.5 inches

What does a number 10 envelope look like?

The most common size of a #10 envelope is 4 1/8 inches high by 9 1/2 inches long, or 4.125 inches x 9.5 inches. Number ten envelopes are typically open side, as the envelopes open on the side with the longer dimension.

Can you mail homemade envelopes?

As long as your handmade envelope weighs under one ounce*, it won't require any additional postage.

Can you mail a pen in a regular envelope?

Pens, pencils, key rings, bottle caps, and other similar odd-shaped items are not permitted in letter-size or flat-size paper envelopes unless they are wrapped within the other contents of the envelope to streamline the shape of the mailpiece and prevent damage during postal processing.

What is the largest envelope for a regular stamp?

How large can an envelope be and still be eligible for First-Class Mail letter rates? A. The maximum size is 11-1/2 inches x 6-1/8 inches x 1/4 inch thick.

Are bubble mailers considered flats?

USPS Size/Weight Requirements

Thick Envelopes: Includes bubble-mailers and other large, padded envelopes and mailers and has the same size restrictions as a flat. Since a Thick Envelope is under 1 cubic foot, the Stamps.com software does not add any USPS surcharges or ask for package dimensions.

Is C4 and A4 the same?

C4: This type of envelope is 324 mm by 229 mm in size which is typically A4, meaning that you can place a full unfolded sheet in.

What size envelope fits A4 paper unfolded?

A C4 envelope measures 229 x 324mm. It fits unfolded A4 sheets.

What is the difference between A7 and A9 envelopes?

An "A" envelope is considered an announcement envelope and is used for thank-you cards, invitations and greeting cards. A7 envelopes: 5.25 x 7.25 inches. A8 envelopes: 5.5 x 8.125. A9 envelopes: 5.75 x 8.75.

How big is A9?

52 x 37 mm
Size Metric Imperial
A7 105 x 74 mm 4.1 x. 2.9 in
A8 74 x 52 mm 2.9 x 2.0 in
A9 52 x 37 mm 2.0 x 1.5 in
A10 37 x 26 mm 1.5 x 1.0 in

What is the size of a A7 envelope?

Though many people refer to A7 envelopes as 5x7 envelopes, an A7 envelope is actually 5 1/4 x 7 1/4 inches and are envelopes for 5x7 cards. It's one of the most popular invitation envelope sizes.

What size envelope fits a 3x5?

Premium 55 Pack White A1 RSVP Envelopes - Envelope dimensions are 3 ⅝ X 5 ⅛ inches. Can comfortably hold 3x5 response cards and inserts.

Size A1 55 Pack
Material Paper
Brand Sensei Supplies
Closure Type Self-Seal

What are standard card sizes?

Standard Card Sizes For Invitation Making, Greeting Cards & Crafts

  • A1 Cards - 3 1/2 x 4 7/8 Card Stock.
  • A2 Cards - 4 1/4 x 5 1/2 Card Stock.
  • A6 Cards - 4 1/2 x 6 1/4 Card Stock.
  • A7 Cards - 5 1/8 x 7 Card Stock.
  • A7.5 Cards - 5 3/8 x 7 1/4 Card Stock.
  • A9 Cards - 5 1/2 x 8 1/2 Card Stock.
  • Square Invitation Cards.
  • What is standard letter size?

    It measures 8.5 by 11 inches (215.9 by 279.4 mm), similar to the A4 paper standard used by most other countries, defined in ISO 216 by the International Organization for Standardization.

    Can I mail a 3x3 envelope?

    Answer: 3-1/2-x-5 (inches) is the smallest legal mailing size for an envelope in the US.

    What is a standard envelope size Australia?

    Envelope Format Size Holds Paper
    Cheque 99 x 212mm
    100 x 230mm
    DL 110 x 220mm A4 cut or folded in thirds
    C6 114 x 162mm A4 cut or folded in half twice

    What size is a d1 envelope?

    D/1 – 180mm x 260mm (7″ x 10.25″).

    Are C5 and A5 the same?

    The same size as A5 paper, the C5 envelope is another popular choice as it's made to fit an A4 piece of paper folded in half lengthways. Great for small printed documents, certificates and magazines, this is a very common type of envelope.

    What is size C7?

    A C7 envelope measures 81 × 114 mm or 3.2 × 4.5 inches. An A7 piece of paper will fit into a C7 envelope. C7 is part of the C series, most commonly used for envelopes, and is defined by the ISO 269 paper size standard.

    Is a C5 envelope a large letter?

    You will need an envelope that's a perfect fit for the letter, leaflet or brochure you are sending. But remember these are a large letter for Royal Mail postage. C5 Envelope size: A C5 envelope will accommodate A5 paper unfolded or A4 paper folded in half, a common size for brochures or flyers.

    What size is Envelope A2?

    Paper and Envelope Size Chart

    Type Envelope Size Enclosed Size
    A2 (5 1/2 Bar) 4.375" x 5.75" 4.25" x 5.5"
    A4 4.25" x 6.25" 4" x 6"
    A6 (6 Bar) 4.75" x 6.5" 4.625" x 6.25" 4.5" x 6.25"
    A7 (Lee) 5.25" x 7.25" 5" x 7" 5.125" x 7"

    What is the difference between a #9 envelope and a 10?

    The #9 envelope is usually sent within another envelope (often a #10 envelope) and returned to the original sender by the recipient. The #9 envelope streamlines the return process by providing the vessel for a quick response from customers or donors.

    Is #10 envelope legal size?

    The 6 envelop size is often used to mail smaller materials as is the 6 ¾ envelope size. Please note that the envelope sizes #10 in the booklet style is different to the business style.


    Type Size
    9 8 ¾ inches by 11 ½ inches
    9 ½ 9 inches by 12 inches
    10 9.5 inches by 12.625 inches
    13 10 inches by 13 inches

    Can I still use my forever stamps?

    USPS states “The Forever Stamp will be valid for mailing any future 1-ounce single-piece First-Class Mail letter, no matter what the price may be at the time of mailing — without the addition of extra postage.”

    Can an envelope be reused?

    When it comes to reducing waste, reuse your envelopes. Turn unproductive and pesky junk mail into free envelopes you can use, use, and use again. While buying eco-friendly envelopes is a great beginning, recycled mailing envelopes will make a major impact when it comes to protecting our planet and environment.

    Can you reuse a letter envelope?

    If you've been wondering “Can I reuse an envelope?” the answer is YES, you can! Use the “Reply” envelopes that come in your junk mail – the envelopes they enclose for you to send back your payment, donation, etc.

    Do letters have to be in an envelope?

    7) The letter must be folded properly to fit inside the envelope and SHOULD NOT obstruct the flap from folding over and sealing properly. 8) ALL MAIL MUST BE INSIDE ENVELOPES. Tri-folded and half-folded paper will jam and tear during the metering process.

    Can I mail a necklace in an envelope?

    Most jewelry is small and lightweight enough to fit in the smallest size shipping box or bubble-padded envelope, and sent with a relatively small amount of postage.

    Can I mail a small object in an envelope?

    Do Not send small objects, such as a ring, in a paper envelope. It will Not make it through the machinery. The envelope will be ripped apart and the object will be lost. If you must send it through the mail.

    Can I mail a bracelet in an envelope?

    No. Putting a lumpy object into a “standard letter envelope” doesn't make it a letter. If it gets put into the sorting system the machines will tear it apart and your bracelet will never get where it is going.

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