Prepaid satchels 5kg and under
Postage for prepaid satchels and mailing boxes is based on size, not weight. Choose from 5 sizes.
- Parcels
- Letters
Maximum size and weight1
| Destination | Maximum Weight | Maximum Length | Maximum Dimensions |
|---|---|---|---|
| Domestic | 22kg | 105cm | 0.25 cubic meters |
| International | 20kg | 105cm | 140cm girth |
How we assess postage for domestic business parcels
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Flat rate packaging 5kg and under
Flat rate postage is based on size, not weight. Choose from boxes, mailing tubes, tough bags and more.
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Other packaging 5kg and under²
Use other packaging (yours or ours) and postage is based on the weight or cubic weight (whichever is greater), and the destination.
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Sending 5kg - 22kg²
The postage for parcels 5kg – 22kg is based on the weight or cubic weight (whichever is greater), and the destination.
How we assess postage for international business parcels3
International parcels are charged according to actual weight. The maximum weight you can ship is 20kg and the maximum girth is 140cm.
You don’t need to cube Australia Post International parcels, including prepaid satchels and flat rate satchels.
The formula for working out the girth of your overseas parcel is: (width + height) x 2 = girth.
When measuring dimensions, the longest side of the parcel is considered the length. Ie, the two shortest sides are used to calculate girth.
For example: a parcel with dimensions 10cm, 105cm and 20cm
= (10cm + 20cm) x 2
= 30cm x 2
= 60cm girth. Within girth limit
Or for a parcel with dimensions 40cm, 35cm and 100cm
= (40cm + 35cm) x 2
= 75cm x 2
= 150cm girth. Exceeds girth limit