What Size Envelope Will The Post Office Take

Dislocated about which envelope you lot need to stay inside the Royal Mail stamp restrictions? Perhaps y'all are planning a large calibration mailing and want to continue postage costs downwards past staying nether the alphabetic character / parcel limits, or working out a cost analysis for sending your products through the post. Information technology tin be tricky to piece of work out which envelope sizes are letters and which are parcel rates.

Our handy envelope stamp guide below will aid you work out the postage costs for different envelope sizes. We've answered your 'most asked questions' virtually envelopes and postage costs below too!

Letter & Package Size Guide for Royal Mail Postage

Letter Size

Max Dimensions : 240mm ten 165mm
Max Thickness : 5mm
Max Weight : 100g
Case of Contents : Greeting carte, letters
Envelope Suggestions : C6 Envelopes, DL Envelopes, C5 Envelopes

Big Letter Size

Max Dimensions : 353mm ten 250mm
Max Thickness : 25mm
Max Weight : 750g
Example of Contents : A4 documents, magazines
Envelope Suggestions : C4 Envelopes

Minor Parcel Size

Max Dimensions : 450mm ten 350mm
Max Thickness : 160mm
Max Weight : 2kg
Example of Contents : Clothing items
Envelope Suggestions : Padded Bubble Envelopes, Volume Wraps

Medium Bundle Size

Max Dimensions : 610mm x 460mm
Max Thickness : 460mm
Max Weight : 20kg
Example of Contents : Gifts, bulky items
Envelope Suggestions : Book Wraps, Boxes

FAQ'South About Envelopes & Postage Rates

What is the largest size envelope that can exist sent equally "letter"?

The maximum size dimensions for a letter to be mailed as Royal Mail 'letter of the alphabet' is 240mm x 165mm. The largest standard envelope size to fit within this range is a C5, which measures 229mm ten 162mm, giving a few mm extra allowance to fit nicely under the limit. C5 envelopes are designed to fit A5 papers/cards or A4 folded in half. Weight of the envelope filled with contents must be less than 100g and thickness must be less than 5mm. View our range of C5 envelopes

What is the largest envelope size for standard post?

Many people refer to the Royal Mail 'letter' format as standard mail service. The maximum envelope size yous can utilize for standard mail is 240mm x 165mm. The largest standard envelope size for standard mail would be a C5, with dimensions of 229mm x 162mm. The weight must be less than 100g when filled and sealed and the depth/thickness must exist less than 5mm. Click here to see our range of C5 Envelopes .

What is the largest size envelope that can be sent as "Large Letter"?

The maximum size dimensions for a letter to exist mailed as Purple Mail service big letter is 353mm x 250mm. The largest standard envelope size to fit within this range is a C4, which measures 324mm ten 229mm, plumbing fixtures nicely under the size limits. C4 envelopes are traditionally designed to fit A4 papers / documents without having to fold the papers. Take a await at our range of C4 envelopes hither. Don't forget that the weight of the envelope filled with contents must be less than 750g and the thickness must be less than 25mm.

If y'all are looking to get the maximum size possible within the large letter range we have a few especially sized envelopes with dimensions 249mm x 352mm - just 1mm under the elevation and width restrictions!

Big Letter of the alphabet Envelopes (249mm ten 352mm)

Manilla Lath Dorsum 'Do Not Bend' Envelopes - 249mm x 352mm >>
White Luxury 180gsm Envelopes - 249mm x 352mm >>
White All Board 350gsm Envelopes - 249mm x 352mm >>

How much does standard letter postage toll?

The electric current Majestic Mail Britain Standard Alphabetic character stamp costs 85p for 1st Course and 66p for second Class.

How much does Large Letter of the alphabet postage cost?

If your alphabetic character falls within the large letter size and weight range, the cost of postage can all the same vary dependent on the actual weight. See the cart beneath for current Imperial Postal service Large Letter of the alphabet prices:

Weights

up to 100g
First Course : £1.29 / Second Course :96p

101g to 250g
First Class :£1.83 / Second Class :£1.53

251g to 500g
First Class :£2.39 / Second Class :£1.99

501g to 750g
Showtime Class :£3.xxx / 2d Class :£2.seventy

*prices above checked on quaternary Feb 2021.

What is the maximum size envelope for a First Grade postage stamp?

The maximum dimensions of an envelope yous can transport with a standard starting time class postage is 240mm x 165mm. Larger than this and stamp rate volition increase to large letter or parcel charge per unit. See our Regal Mail Letter & Parcel Size Guide above for more info.

Which size envelopes crave extra stamp?

To be eligible for standard mailing charge per unit the envelope must be less than 240mm x 165mm and weigh less than 100g and be less than 5mm thick. Mail over this size or weight will crave extra postage. Whorl up to encounter the costs and weight ranges higher up standard rate, or head to the Royal Mail website for the most up to date data.

What is the cheapest Great britain postage rate and which envelope can I use?

The cheapest rate would be a standard 2nd Form postage. Your envelope volition demand to exist less than 240mm x 165mm and weigh less than 100g, plus the thickness under 5mm, to qualify for this postage charge per unit, so y'all could utilize a C6, DL or C5 envelope to fit within this size range. The price of a standard 2nd grade stamp at letter rate is 66p.

Information correct as of 4th February 2021. Delight employ this folio equally a guideline. Nosotros always recommend measuring/weighing your postage and checking the Royal Mail service website for the most upwardly to date rates. We cannot be held responsible for whatever costs incurred based on the above information.