There is no single international postage rate. The payable amount is determined by the destination, whether the item is a letter, packet or parcel, its packed measurements, and the service selected.
Postal tables separate destinations into zones such as Europe and rest of world, while courier quotes use their own country and postcode rules. Select the actual destination country before comparing any headline rate.
Do not use a UK quote for another non-EU country
Check islands and remote-area rules
Confirm the live destination list
Classify the package
A flat document can price differently from a thick packet or parcel at the same weight. Measure the sealed item and use the carrier's format limits, because thickness or dimensions can move it into another category.
Letter: document-shaped and within letter limits
Packet: small goods within packet limits
Parcel: larger or heavier packaged goods
Add service requirements
Ordinary post may be suitable for low-risk documents, but goods, valuable orders and customer shipments often need tracking or delivery evidence. Compare the complete service rather than choosing by price alone.
Check tracking coverage to the destination
Read compensation exclusions
Allow for collection or drop-off costs
Complete customs before posting
Goods sent to destinations requiring customs data need accurate content, value, quantity and origin information. Customs charges for the recipient are separate from the postage paid by the sender.
Documents and goods are treated differently
Restrictions vary by destination
Keep order and customs records together
How to get it right
Pack and measure: Record the final weight and three external dimensions.
Choose the country: Use the exact destination and postcode where the quote requires it.
Compare like with like: Match tracking, delivery aim, cover and handover method.
Confirm customs: Complete declarations accurately and check prohibited or restricted items before paying.
Official sources
Rules, availability and rates can change. Confirm the live details before buying postage.