SHIPPING WEIGHT
Volumetric weight, know it before you pay for it.
Enter the dimensions and the actual weight to get the volumetric weight and the chargeable weight for divisors 5000 and 6000, with a comparison across divisors; multiple parcels are counted one by one and bulky goods can be forced to volumetric billing. Everything is computed locally in your browser.
The volumetric weight exceeds the actual weight, so shipping is charged on volume: shrinking the box saves more than losing weight.
Chargeable weight by divisor
| Divisor | Typical channel | Volumetric (kg) | Chargeable (kg) | vs current choice |
|---|---|---|---|---|
| 5000 | Most domestic couriers | 14.40 | 14.40 | 0 |
| 6000 | International couriers, some freight | 12.00 | 12.00 | -2.40 |
| 8000 | Some dedicated lines and large-pile shipping | 9.00 | 9.00 | -5.40 |
A larger divisor means a lighter volumetric weight and cheaper shipping for the same box; a smaller divisor costs more. Most domestic couriers use 5000, international couriers and some freight lines use 6000.
What can this tool do?
Volumetric weight is where people get overcharged: the bigger the box, the more space it takes, and shipping is billed on the larger of actual weight and volumetric weight. This page works out both from the dimensions and weight you enter, then lists the results for 5000, 6000 and 8000 side by side so you can see what switching channel would save. Multiple parcels are calculated one by one and then added up, and bulky goods can be forced to volumetric billing. All computation is local; no dimension or weight is uploaded.
FAQ
Which divisor should I use?
It depends on the carrier and channel: most domestic couriers use 5000 (some routes 6000 or actual weight only), international couriers commonly use 6000 or a rate per cubic metre, and freight forwarders each have their own rule. The safest move is to ask the seller for the divisor of that channel, then compare both here.
Why is my actual weight lower than the waybill?
Because couriers mostly bill on volumetric weight: a light, bulky parcel may weigh only 2 kg, but a 40 × 30 × 20 cm box gives 4.8 kg with a divisor of 5000, so that is what you are charged. Shrinking the packaging volume saves more than losing weight.
示例与注意事项Example & notes
一个例子A worked example
寄一件 60 × 40 × 30 cm 的泡沫箱，实重 3 kg：按 6000 除数算体积重是 12 kg，计费重取大的那个就是 12 kg；同一件货换 5000 除数（多数快递）体积重变成 14.4 kg，运费立刻上一个台阶。Shipping a 60 × 40 × 30 cm foam box weighing 3 kg: with a divisor of 6000 the volumetric weight is 12 kg, so the chargeable weight is 12 kg. Switch to 5000, which most couriers use, and the volumetric weight becomes 14.4 kg - the bill jumps.
注意事项Things to watch
- 体积重 = 长 × 宽 × 高（cm）÷ 除数，结果单位是 kg；除数越大算出的体积重越小，所以快递常用 5000、物流与部分专线用 6000。Volumetric weight = length × width × height (cm) ÷ divisor, in kilograms. A larger divisor gives a smaller volumetric weight, which is why couriers commonly use 5000 while freight lines often use 6000.
- 计费重永远取「实重」与「体积重」里更大的那个：轻泡货算实重不划算，重货按体积走；大件家电常常两者都超，最终看哪边更高。The chargeable weight is always the larger of actual weight and volumetric weight: light, bulky items are billed on volume, dense items on actual weight, and for large appliances the two are often close.
- 多件商品要逐件算再相加，不要先把所有长宽高合起来乘：两件 50 × 40 × 40 cm 的体积重是 2 × 13.3 kg = 26.7 kg，而合并成 100 × 40 × 40 只有 26.7 kg 但实际发货常按两件处理，运费口径以商家实际合单方式为准。Calculate each parcel separately and add them up instead of multiplying all dimensions together: two 50 × 40 × 40 cm boxes give 2 × 13.3 = 26.7 kg, while merging them into one 100 × 40 × 40 box gives the same number but a different parcel count, and couriers bill by how the sender actually hands over the goods.
- 泡货（泡沫、棉花、衣物）即使是实重很轻也会按体积重计费；易碎品或大件家具还要看是否抛货、是否超长（单边超过 1.5 米或 2 米常另收费）。Bulky, light goods such as foam, cotton or clothing are still charged on volumetric weight; fragile or oversized furniture may also be treated as bulky goods and long items (one side over 1.5 to 2 m) often carry a surcharge.
- 下单前拿卷尺量外包装的最长、最宽、最高（含气泡膜与纸箱厚度），并用实秤称重；尺寸与重量都取整到商家系统的小数位，差一点可能跨过计费档位。Measure the outer packaging at its longest, widest and tallest (including bubble wrap and carton thickness) and weigh it on a scale; round both the way the seller system does, because a small difference can push you into a higher billing bracket.
相关问答More Q&A
体积重的除数到底怎么选？Which divisor should I use?
看承运商与渠道：多数国内快递用 5000（部分线路 6000 或按实重不折算），国际快递常见 6000 或按每公斤体积算；德邦、顺丰大件与专线各有自己的口径，最稳妥的做法是直接问商家要该渠道的除数，再在本页切换比较两者的差额。It depends on the carrier and the channel: most domestic couriers use 5000 (some routes 6000 or actual weight only), international couriers commonly use 6000 or a rate per cubic metre, and freight forwarders each have their own rule. The safest move is to ask the seller for the divisor of that channel, then compare both here.
为什么实际重量算出来比快递单上的轻？Why is my actual weight lower than the waybill?
因为快递大多按体积重计费：轻泡货的实重只有 2 kg，但箱子 40 × 30 × 20 cm 按 5000 除数算体积重是 4.8 kg，快递单就会按 4.8 kg 收费。压缩包装体积比减重量更省钱。Because couriers mostly bill on volumetric weight: a light, bulky parcel may weigh only 2 kg, but a 40 × 30 × 20 cm box gives 4.8 kg with a divisor of 5000, so that is what you are charged. Shrinking the packaging volume saves more than losing weight.