1 Package Visualization
The box updates dynamically based on your current length, width, and height inputs.
物流工具
Shipping Tools
DIM Weight Calculator
Use our DIM (Dimensional Weight) calculator to compare actual weight vs. dimensional weight and find the billable weight for better shipping rate decisions.
2 DIM Weight Calculator
3 DIM Weight Result
Actual Weight
0.000 lb
(0.000 kg)
DIM Weight
0.000 lb
(0.000 kg)
计费重量
Charged Weight
Billable Weight
0.000 lb
(0.000 kg)
体积重量计算：（长 × 宽 × 高）÷ 计费系数 = 体积重量
DIM Calculation: (L × W × H) ÷ DIM Factor = DIM Weight
使用的计费系数： DIM Factor Used: 139
DIM Factor
5000 (≈ 138.40 in/lb)
DIM Factor Conversion Tool
常用换算Popular conversions
What Is Dimensional Weight
Dimensional weight (also called volumetric weight) estimates shipping weight from parcel size. Carriers use it to account for vehicle and sortation space, not only physical mass.
For eCommerce and 3PL teams, oversized but lightweight parcels can be billed higher than expected.
How Billable Weight Works
Billable weight is the greater of actual weight and DIM weight. If package volume creates a larger DIM value, carriers usually bill using DIM weight.
Billable Weight Rule The greater of actual weight and dimensional weight
计费系数参考 DIM Factor Reference
不同承运商和服务产品可能采用不同的计费系数。 Carrier and service-level DIM factors can differ from common industry approximations.
查看计费系数表 View DIM Factor TableDIM Factor Reference Table
以下为行业常见近似对照。不同承运商和服务产品的实际计费系数可能不同。 These are common industry approximations. Actual DIM factors may differ by carrier and service.
| DIM Factor (in³/lb) | DIM Factor (cm³/kg) |
|---|---|
| 139 | 5000 |
| 166 | 6000 |
| 194 | 7000 |
| 220 | 8000 |
| 250 | 9000 |
DIM Weight Explanation
Carriers usually bill by the greater of actual weight and dimensional weight, so parcel size directly affects billable weight.
| Formula mode | Calculation |
|---|---|
| inch / lb | 体积重量（磅）=（长 × 宽 × 高）÷ 计费系数 DIM Weight (lb) = (Length × Width × Height) ÷ DIM Factor |
| cm / kg | 体积重量（千克）=（长 × 宽 × 高）÷ 计费系数 DIM Weight (kg) = (Length × Width × Height) ÷ DIM Factor |
Actual weight vs DIM weight
Actual weight is the physical scale weight, while DIM weight is calculated from package size. Billing usually uses the larger value.
How billable weight works
Billable weight is max(actual weight, dimensional weight). Use this value as your primary cost reference.
- 先用该工具完成尺寸与重量画像，再进入 费率对比 提交业务资料。 Use this tool first, then submit your profile in rate comparison.
- 若包装规格波动较大，建议结合 物流测算器 评估承运商组合。 If packaging variance is high, combine this with the Shipping Calculator.
- 查看 承运商目录 与 USPS 页面，结合尺寸结构评估履约路径。 Review the carrier directory and USPS page to align DIM impact with carrier fit.
- 若计划系统化接入，可继续阅读 Shipping API 或直接进入 演示预约。 For system integration, explore the Shipping API or book a demo.
FAQ
What is dimensional weight?
Dimensional weight is a billing method based on parcel volume instead of actual weight.
How do you calculate dimensional weight?
Use Length × Width × Height ÷ DIM Factor, then compare against actual weight in carrier billing rules.
What is the difference between actual weight and dimensional weight?
Actual weight is measured on a scale, while dimensional weight is calculated from package dimensions and DIM factor. Billing usually uses the higher value.
How do carriers determine billable weight?
Carriers usually compare actual and dimensional values, then bill by the higher one.
What DIM factor should I use?
Start with common presets, then confirm the exact factor from your carrier service policy.
Why is 139 commonly used?
139 is a widely used reference factor in U.S. parcel services, but the final DIM factor depends on carrier and service type.
Is dimensional weight the same as volumetric weight?
Yes. In most logistics contexts, dimensional weight and volumetric weight refer to the same billing concept.
Do USPS and other carriers always use the same DIM factor?
No. DIM factors can vary by carrier, service, destination, and contract terms, so confirm with the active billing policy.
Need a cost review based on parcel dimensions?
提交运单信息，我们的体积重量专家会提供更精确的费率对比建议。 Submit your shipment info and our DIM experts will give a more precise rate comparison recommendation.
