Rules verified 22 Sep 2026UPS divisors, rounding, size criteria and 2026 surcharge amounts checked against UPS’s own documents: UPS 2026 Rate and Service Guide (Daily Rates) · UPS 2026 Rate and Service Guide (Retail Rates) · UPS — Shipping dimensions and weight. Carriers change these rules, usually each January and July — see what changed and when, and confirm against your own rate sheet or account.
UPS · DIM Weight Calculator

UPS Dimensional
Weight Calculator.

Calculate UPS billable weight with UPS’s published divisors: 139 in³/lb for Daily Rates and 166 in³/lb for domestic Retail Rates. Includes UPS’s Additional Handling and Large Package criteria and 2026 surcharge amounts from the UPS Rate and Service Guide.

Open UPS US calculator → UPS Retail (166) → UPS international →
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For deeper UPS analysis — surcharge modeling, comparing UPS Ground vs Air vs Worldwide on the same shipment, or building rate sheets for many packages — try our sister site dimweightcalc.com.

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The UPS formula

139 on Daily Rates. 166 on Retail.

UPS publishes two inch-based divisors, depending on how you pay (source):

Daily Rates (UPS account)
DIM weight (lb) = (L × W × H in inches) ÷ 139

Retail Rates (UPS Store / counter)
DIM weight (lb) = (L × W × H in inches) ÷ 166
Rounding: UPS says to round each measurement up to the nearest whole number (1.01 to 1.99 becomes 2) and to increase any fraction of a pound to the next whole pound. The calculator does both by default.
International (metric)
DIM weight (kg) = (L × W × H in cm) ÷ 5,000

If your UPS contract specifies a different divisor, enter it under Advanced options in the calculator (in³/lb or cm³/kg). See our guide to negotiating DIM divisors.

UPS size criteria (US domestic)
Additional Handling — any of:
Longest side> 48 in
Second-longest side> 30 in
Length + girth> 105 in
Cubic size> 10,368 in³
Min. billable (size-based)40 lb
Actual weight (US / intl)> 50 lb / > 55 lb
Large Package — any of:
Length + girth · length> 130 in · > 96 in
Weight · cubic size> 110 lb · > 17,280 in³
Minimum billable weight90 lb
Over Maximum Limits
Weight · length · L+G150 lb · 108 in · 165 in

Source: UPS 2026 Rate and Service Guide (Daily Rates), pp. 179–181. Packaging criteria (non-corrugated, cylindrical, banded, soft packs over 18 × 14 × 6 in, packages 1 in or less in height) also trigger Additional Handling.

Rules verified 22 Sep 2026 · sources: UPS 2026 Rate and Service Guide (Daily Rates)

UPS 2026 surcharges (Daily Rates)
Residential — Ground$6.50
Residential — Air / 3 Day Select$7.00
Delivery area — commercial / residential$4.50 / $6.55
Delivery area extended — comm. / res.$5.70 / $8.85
Additional Handling — size$30.00–$40.50
Additional Handling — weight$46.50–$58.75
Additional Handling — packaging$26.75–$33.75
Large Package — commercial$219.50–$286.00
Large Package — residential$254.50–$331.00
Over Maximum Limits$1,875.00

Per package, domestic, ranges by zone (2 to 7+). International: Additional Handling $36.35, Large Package $235.00. Only one Additional Handling charge applies per package, and none when a Large Package Surcharge applies. Source: UPS 2026 Rate and Service Guide (Daily Rates), pp. 179–183. On Retail Rates, Ground residential and U.S. 48 delivery area charges differ; see the Retail Rates guide.

Rules verified 22 Sep 2026 · sources: UPS 2026 Rate and Service Guide (Daily Rates) · UPS 2026 Rate and Service Guide (Retail Rates)

Worked example

A typical UPS calculation.

Scenario: Shipping a curtain-rod box. Actual weight 4 lb. Package dimensions 60 × 6 × 6 in. UPS Ground within the US.

Volume = 60 × 6 × 6 = 2,160 in³
Daily Rates: 2,160 ÷ 139 = 15.5 lb → 16 lb
Retail Rates: 2,160 ÷ 166 = 13.0 lb → 14 lb
Longest side 60 in > 48 in → Additional Handling, 40 lb minimum billable weight
Chargeable weight = max(4 lb, 16 lb, 40 lb) = 40 lb + $30.00–$40.50 surcharge

The 40 lb minimum is what makes long, light boxes expensive: this 4 lb rod is billed as 40 lb plus the surcharge. Switching to FedEx doesn’t avoid it — FedEx also starts Additional Handling above 48 inches, with the same 40 lb minimum. Keep the longest side at 48 in or less if you can.

UPS vs FedEx vs USPS

How UPS compares.

Carrier Divisor (inches) Max length + girth
UPS Daily / Retail139 / 166 in³/lb165 in
FedEx139 in³/lb165 in
USPS Priority Mail139 in³/lb (over 1 ft³)108 in
USPS Ground Advantage139 in³/lb (over 1 ft³)108 in (130 in Retail)

Sources: UPS, FedEx Service Guide 2026, USPS DMM 223, USPS DMM 101. Full breakdown: UPS vs FedEx DIM weight comparison.

Rules verified 22 Sep 2026 · sources: UPS 2026 Rate and Service Guide (Daily Rates) · UPS 2026 Rate and Service Guide (Retail Rates) · FedEx Service Guide 2026 · USPS DMM 223 (Priority Mail: DIM weight, cubic, nonstandard fees) · USPS DMM 101 (maximum size and weight)

UPS DIM weight FAQ

Common questions.

What is UPS's dimensional weight divisor?
On Daily Rates (a UPS account), divide the cubic size in inches by 139 for all domestic and international packages. On Retail Rates (UPS Store and counter prices), divide by 166 for domestic and 139 for export (Daily Rates guide, Retail Rates guide, p. 19).
How do I calculate UPS DIM weight?
Measure each side at its longest point and round every fraction up to the next whole inch (UPS’s example: 1.1 becomes 2; the minimum for any side is 1 inch). Multiply length × width × height, divide by 139 (or 166 on domestic Retail Rates), and round any fraction up to the next pound. The billable weight is the greater of that and the actual weight.
When does UPS apply Additional Handling?
When the actual weight is over 50 lb (55 lb international); the length plus girth is over 105 in; the longest side is over 48 in; the second-longest side is over 30 in; the cubic size is over 10,368 in³; or the packaging is non-standard. Size-based Additional Handling carries a 40 lb minimum billable weight. 2026 Daily Rates: $30.00–$40.50 (size), $46.50–$58.75 (weight), $26.75–$33.75 (packaging) by zone (UPS 2026 Rate and Service Guide (Daily Rates), p. 179).
What is a UPS Large Package?
For domestic shipments: length plus girth over 130 in, length over 96 in, weight over 110 lb, or cubic size over 17,280 in³. Large Packages have a 90 lb minimum billable weight, and the 2026 surcharge is $219.50–$286.00 (commercial) or $254.50–$331.00 (residential) by zone. Internationally, only the 130 in length-plus-girth test applies ($235.00).
What are the UPS maximum size and weight limits?
150 lb actual weight, 108 in length, and 165 in length plus girth. Packages over these limits aren’t accepted; if found in the UPS system they’re charged $1,875.00.
How much is the UPS residential surcharge in 2026?
On Daily Rates: $6.50 for UPS Ground and $7.00 for UPS domestic Air and 3 Day Select, plus a delivery area surcharge in some ZIP codes ($6.55 residential, $8.85 residential extended).