Maximum parcel size and weight1

Size guide
Destination Maximum weight Maximum length Maximum dimensions
Domestic

Maximum weight

22kg

Maximum length

105cm

Maximum dimensions

0.25 cubic metres

International

Maximum weight

20kg

Maximum length

105cm

Maximum dimensions

140cm girth

How we assess domestic parcel charges

How we assess international parcel charges

International parcels are charged according to actual weight. The maximum weight you can send is 20kg and the maximum girth is 140cm.

Please note: You do not need to cube Australia Post international prepaid or flat rate satchels.

Maximum letter size and weight2

Size guide
Destination Size Maximum weight Maximum dimensions Maximum thickness
Domestic

Size

Small envelope

Maximum weight

250g3

Maximum dimensions

130 x 240mm

Maximum thickness

5mm3

Size

Large envelope

Maximum weight

500g

Maximum dimensions

260 x 360mm

Maximum thickness

20mm

International

Size

Envelope

Maximum weight

500g

Maximum dimensions

260 x 360mm

Maximum thickness

20mm

1 Some domestic parcel services have specific size and weight restrictions. Please check the service for more details before lodging your article.
While Australia Post accepts articles of the specified size and weight for International posting, some countries may have their own restriction on parcel sizes. Customers should confirm with the foreign postal agency if concerned.

2 Letters should not contain stiff objects such as bottle tops, pens, items enclosed in a hard case, and so on. High-speed letter sorting equipment could damage such objects, or the objects could damage other articles.
Different size & weight restrictions apply to seasonal greeting cards, valid for postage between 1 November and 31 December. View domestic letter prices for more information.

3 Maximum weight and thickness differs for small Express Post envelopes. For more information, visit our Express Post letters page.