How volumetric weight works
A pillow and a phone case can weigh the same, but the pillow fills far more of the truck. To charge fairly for space, couriers convert a box's size into a "volumetric weight":
Volumetric weight (kg) = length × width × height (cm) ÷ divisor
Then they bill whichever is higher, the actual weight or the volumetric weight. That's the chargeable weight.
The divisor is set by the courier or platform. 5,000 is the most common and is the one in Shopee's published formula. Other platforms and local couriers may use 6,000, 3,500 or another number. A lower divisor means a higher volumetric weight, so check the one on your courier's rate card.
Example: the oversized box
You ship a 0.8 kg item in a 30 × 20 × 10 cm box:
- Volume: 30 × 20 × 10 = 6,000 cm³
- Volumetric weight at 5,000: 6,000 ÷ 5,000 = 1.2 kg
- Chargeable weight: 1.2 kg, rounded up to 1.5 kg on most rate cards
Switch to a 25 × 18 × 10 cm box (4,500 cm³) and the volumetric weight drops to 0.9 kg. Now you're billed for 1 kg instead of 1.5 kg, on every single order.
How to cut shipping costs with packaging
- Keep two or three box sizes, not one big size for everything. The money saved on smaller parcels usually pays for the extra box stock within weeks.
- Use pouches for soft items. Clothes and fabric goods ship better in poly mailers, where size follows the product.
- Cut down boxes. Trimming a tall box to fit the item is a common trick among sellers who ship daily.
- Measure after packing. Bubble wrap and fillers add centimeters. Measure the finished parcel.
- Enter honest dimensions in Seller Center. If what you declare differs from what the courier measures, you may be charged the difference or get a dispute.
Frequently asked questions
What divisor does Shopee use for volumetric weight?
Shopee's published formula divides length × width × height in centimeters by 5,000. Check your Seller Center for your logistics channel, since rules can differ.
Is chargeable weight rounded up?
Usually yes. Most rate cards round up to the next 0.5 kg or 1 kg. Pick the rounding that matches your courier.
Does volumetric weight apply to small parcels?
It applies to every parcel, but it only matters when the box is large for its weight. Small, dense items are almost always billed by actual weight.