Royal mail sizing guide
Royal Mail provides a sizing guide for their envelopes and packets to help customers determine the correct size and weight for their mail items. Here is a summary of the Royal Mail sizing guide:
Envelopes:
- C5 (A6) envelope: 148 x 99mm (5.8 x 3.9 in)
- C4 (A5) envelope: 210 x 148mm (8.3 x 5.8 in)
- C3 (A4) envelope: 324 x 229mm (12.8 x 9 in)
- C2 (A3) envelope: 458 x 324mm (18.1 x 12.8 in)
- C1 (A2) envelope: 612 x 458mm (24.1 x 18.1 in)
Packets:
- Small Packet (up to 2kg): 305 x 455mm (12 x 18 in)
- Medium Packet (up to 5kg): 305 x 610mm (12 x 24 in)
- Large Packet (up to 10kg): 305 x 760mm (12 x 30 in)
- Extra Large Packet (up to 20kg): 305 x 910mm (12 x 36 in)
Weight Limits:
- Small Packet: up to 2kg (4.4 lbs)
- Medium Packet: up to 5kg (11 lbs)
- Large Packet: up to 10kg (22 lbs)
- Extra Large Packet: up to 20kg (44 lbs)
Other Considerations:
- Maximum length: 610mm (24 in)
- Maximum girth: 760mm (30 in)
- Maximum thickness: 25mm (1 in)
- Maximum weight: 30kg (66 lbs) for international mail
Please note that these are general guidelines and specific requirements may apply for certain types of mail, such as large or heavy items, or items that require special handling. It's always best to check with Royal Mail or consult their website for the most up-to-date information on sizing and weight limits.