Royal mail letter sizes and prices

Here are the standard letter sizes and prices for Royal Mail in the UK:

Letter Sizes:

• Small Letter (up to 76mm x 102mm): This is the smallest size that can be sent as a letter.
• Medium Letter (76mm x 102mm to 114mm x 162mm): This is the most common size for letters.
• Large Letter (114mm x 162mm to 114mm x 245mm): This size is used for larger letters, such as those containing brochures or catalogs.
• Extra Large Letter (114mm x 245mm to 114mm x 330mm): This is the largest size that can be sent as a letter.

Letter Prices:

• Small Letter (up to 76mm x 102mm):
  • 1st Class: £0.76 (up to 100g)
  • 2nd Class: £0.65 (up to 100g)
• Medium Letter (76mm x 102mm to 114mm x 162mm):
  • 1st Class: £0.76 (up to 100g)
  • 2nd Class: £0.65 (up to 100g)
• Large Letter (114mm x 162mm to 114mm x 245mm):
  • 1st Class: £1.03 (up to 100g)
  • 2nd Class: £0.85 (up to 100g)
• Extra Large Letter (114mm x 245mm to 114mm x 330mm):
  • 1st Class: £1.30 (up to 100g)
  • 2nd Class: £1.10 (up to 100g)

Additional Fees:

• Additional 100g increments: £0.05 each
• Special Delivery Guaranteed by 1pm: £6.30 (up to 100g)
• Special Delivery Guaranteed by 9am: £11.30 (up to 100g)

Notes:

• Prices are subject to change, so it's always best to check the Royal Mail website for the most up-to-date information.
• The prices listed above are for standard letters, but there may be additional fees for larger or heavier items.
• If you're sending a letter internationally, the prices and sizes may vary depending on the destination and the service you choose.