Free, no signup. Rules checked November 2026
UPS dimensional weight calculator
Enter a box size to see what UPS will bill on daily and retail rates.
UPS divides cubic inches by 139 if you ship on daily or negotiated rates and by 166 at retail rates, then bills the greater of that and the scale weight. Enter your box to see both, using the 2026 rule that every fraction of an inch rounds up, with a check against the Additional Handling and Large Package limits.
UPS dimensional weight rules for 2026
From the UPS Rate and Service Guide for daily and retail rates, updated September 7, 2026.
| Divisor, daily rates | 139 for domestic and international packages. Daily rates apply to accounts with scheduled pickup. |
|---|---|
| Divisor, retail rates | 166 for domestic packages and 139 for exports. Retail rates apply at UPS locations and without an account. |
| Rounding dimensions | Every fractional measurement rounds up to the next whole inch. UPS's own example: 1.1 is treated as 2. |
| Rounding weight | Scale weight and DIM weight both round up to the next whole pound. |
| Where it applies | All UPS domestic and international package services. There is no minimum size. |
| Exempt | UPS Simple Rate, which is flat-rate pricing for packages up to 1,728 cubic inches and 50 lb. |
- UPS Rate and Service Guide, Daily Rates (updated September 7, 2026)
- UPS Rate and Service Guide, Retail Rates (updated September 7, 2026)
- UPS Tariff/Terms and Conditions of Service, effective April 17, 2026
Daily rates or retail rates: which divisor applies to you
The same box has two UPS DIM weights, and the lower one is not the cheaper shipment.
Daily rates use 139
If you ship on a UPS account with scheduled pickups, your packages are rated at 139.
Retail rates use 166
Ship at a UPS location or without an account and the divisor is 166, which gives a lower DIM weight.
Lower weight, higher price
Retail rates cost more per pound than daily rates, so the lower retail weight does not make it the cheaper shipment.
Exports are 139 either way
For international shipments UPS uses 139 on both daily and retail rates.
UPS size surcharges to check before you ship
UPS added cubic-inch triggers in 2026, so a box can now be surcharged on volume alone.
Additional Handling
Applies when the longest side is over 48 inches, the second-longest is over 30 inches, length plus girth is over 105 inches, the box is over 10,368 cubic inches, or it weighs over 50 lb. Size triggers set a 40 lb minimum billable weight. The 2026 guide lists $30.00 to $40.50 by zone for size and $46.50 to $58.75 for weight.
Large Package Surcharge
Applies over 96 inches long, over 130 inches in length plus girth, over 17,280 cubic inches, or over 110 lb. The package is billed at a minimum of 90 lb. Additional Handling is not charged on top.
Over Maximum Limits
UPS does not accept packages over 150 lb, over 108 inches long, or over 165 inches in length plus girth. One found in the network is charged $1,875.
Tubes and bulges
Cylinders such as mailing tubes trigger Additional Handling on their own. UPS measures a bulging box at its extreme points, including the bulge.
UPS billable weight examples
Each row is what this calculator returns for that box under UPS's 2026 rules.
| Box | Billable weight | Why |
|---|---|---|
| 12×12×12 in, 5 lb 1,728 in³ | 13 lb daily, 11 lb retail | One cubic foot bills at 13 lb on daily rates and 11 lb at retail. |
| 16×12×10 in, 4 lb 1,920 in³ | 14 lb daily, 12 lb retail | A light apparel-size box is billed on its size. |
| 18×14×8 in, 20 lb 2,016 in³ | 20 lb daily, 20 lb retail | A dense box bills at its scale weight on both. |
| 50×8×8 in, 12 lb 3,200 in³ | 40 lb daily, 40 lb retail | Over 48 inches long, so Additional Handling sets a 40 lb minimum. |
| 32×24×24 in, 30 lb 18,432 in³ | 133 lb daily, 112 lb retail | Over 17,280 cubic inches, so the Large Package Surcharge applies. DIM weight is already above the 90 lb minimum. |
How to calculate UPS dimensional weight
Three steps. The calculator above does all of them as you type.
Step 1
Measure and round up
Measure length, width and height at the extreme points, including any bulge, and round each up to the next whole inch.
Step 2
Multiply, then divide
Multiply the three numbers for cubic inches. Divide by 139 for daily rates or 166 for retail, and round up to the next pound.
Step 3
Take the greater weight
Compare DIM weight with the scale weight rounded up to the next pound. UPS bills the greater, or the surcharge minimum if one applies.
UPS dimensional weight FAQs
- What is the UPS DIM divisor in 2026?
- 139 for daily rates, and 166 for domestic packages at retail rates. Exports use 139 on both. Multiply length × width × height in inches, divide by your divisor, and round up to the next pound.
- What is the difference between UPS daily and retail rates?
- Daily rates are for UPS account holders with scheduled pickups and use a 139 divisor. Retail rates apply at UPS locations and to shipments without an account, and use 166 for domestic packages. Retail gives a lower DIM weight but a higher price per pound.
- How does UPS round package dimensions?
- Up. Each fractional measurement is rounded up to the next whole inch, so 1.1 inches counts as 2, and the minimum for any dimension is 1 inch. DIM weight and scale weight both round up to the next whole pound.
- When does the UPS Large Package Surcharge apply?
- To domestic packages over 96 inches long, over 130 inches in length plus girth, over 17,280 cubic inches, or over 110 lb. A Large Package is billed at a minimum of 90 lb.
- Does UPS Ground use dimensional weight?
- Yes. UPS says dimensional weight may apply to all of its domestic and international package services, including Ground. There is no size below which it is skipped.
- Does UPS Simple Rate use dimensional weight?
- No. Simple Rate is flat-rate pricing by box size, for packages up to 1,728 cubic inches and 50 lb, so DIM weight is not part of the price.
- What is the largest package UPS will take?
- Up to 150 lb, 108 inches long, and 165 inches in length plus girth. Anything larger has to ship as freight.
Compare with other carriers
The same box can bill at a different weight depending on who carries it.
- All carriers side by sideUPS, FedEx and USPS billable weight for one box, in one table.
- FedEx Dimensional Weight CalculatorFedEx DIM and billable weight at ÷139 with 2026 round-up rules, plus Additional Handling and Oversize checks.
- USPS Dimensional Weight CalculatorUSPS DIM and billable weight at the 139 divisor in effect since July 12, 2026, with the one cubic foot rule and nonstandard-fee checks.
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