Royal mail letter dimensions

Royal Mail, the postal service of the United Kingdom, has specific dimensions for letters that can be sent through their network. Here are the standard dimensions for Royal Mail letters:

Standard Letter

• Length: Up to 240mm (9.45 inches)
• Width: Up to 165mm (6.5 inches)
• Thickness: Up to 5mm (0.2 inches)

Large Letter

• Length: Up to 353mm (13.9 inches)
• Width: Up to 250mm (9.8 inches)
• Thickness: Up to 25mm (1 inch)

Large Letter Card

• Length: Up to 353mm (13.9 inches)
• Width: Up to 250mm (9.8 inches)
• Thickness: Up to 5mm (0.2 inches)

Special Large Letter

• Length: Up to 460mm (18.1 inches)
• Width: Up to 305mm (12 inches)
• Thickness: Up to 25mm (1 inch)

It's worth noting that these dimensions are for standard letters and may vary for special items such as:

• Large envelopes (e.g. A4 size)
• Parcels (e.g. boxes, packets)
• International mail
• Special delivery items (e.g. registered mail, tracked mail)

If you're unsure about the dimensions of your item, you can check with Royal Mail's website or visit a local post office for guidance.