Each format has its own size, thickness and weight criteria.
Prices for 1st Class & 2nd Class mail are the same no matter where you’re sending in the UK.
The amount you pay depends simply on the size and weight of the item you’re sending.
Don’t pay more than you need to
You might consider folding your A4 document in half to fit into a C5 envelope. This would bring it down to the letter format, as long as it is still less than 5mm thick.
| Format | Maximum weight | Maximum length | Maximum width | Maximum thickness |
|---|---|---|---|---|
 Letter Examples: Greetings cards, personal letters, postcards and bills |
100g | 240mm | 165mm | 5mm |
 Large Letter Examples: A4 documents, CDs and DVDs in their cases, certificates, some large greeting cards with badges and magazines |
750g | 353mm | 250mm | 25mm |
 Small Parcel Examples: Gifts, clothes, books. Buy boxes from our shop. |
2kg | 45cm | 35cm | 8cm |
 Medium Parcel Examples: Gifts, shoes, heavy or bulky items |
20kg | 61cm | 46cm | 46cm |
Rolled and cylinder shaped parcels
For rolled and cylinder shaped items, the length of the item plus twice the diameter must not exceed 104cm, with the greatest dimension being no more than 90cm. Rolled and cylinder shaped parcels that measure up to 45cm in length and 8cm in diameter and do not exceed 2kg can be sent as small parcels.
Exceptions apply
Parcels that do not exceed 16cm in length and 16cm in width and 16cm in depth can be sent as small parcels, provided the weight does not exceed 2kg. Visit our shop to buy boxes this size.
Parcels greater in size than 61cm x 46cm x 46cm or heavier than 20kg can be sent using Parcelforce services which include tracking and are guaranteed.
Large parcels
Sending items with any dimension larger than those listed above? Then you’ll need to send those items via Parcelforce Worldwide services where items can measure up to:
- 1.5m in length and 3m length and depth combined
- Weight limit: 30kg
- Large parcels can only be sent via Parcelforce.
Prices for 1st Class & 2nd Class mail are the same no matter where you’re sending in the UK.
The amount you pay depends simply on the size and weight of the item you’re sending.
Don’t pay more than you need to
You might consider folding your A4 document in half to fit into a C5 envelope. This would bring it down to the letter format,
