Skip to content
DimCheck

Carrier Rules

This page is generated directly from the same structured rule configuration that powers every calculation on DimCheck — nothing here is hand-copied. Every value links to the official carrier documentation it was verified against.

GenericIndustry-standard defaults

Last verified 2026-08-30. No published effective date.

DIM divisor (imperial)
166 in³/lb
DIM divisor (metric)
6000 cm³/kg
Dimension rounding (imperial / metric)
up / up to whole in · cm
DIM weight rounding
up to whole lb · up to whole kg
Actual weight rounding
up to whole lb · up to whole kg

Notes

  • Not a carrier rule: industry-standard defaults (166 in³/lb, 6,000 cm³/kg) with round-up. Carrier pages apply their own official rules.

Official sources

FedExUS domestic Express & Ground

Last verified 2026-08-30. Current rule set effective 2026-01-12.

DIM divisor (imperial)
139 in³/lb
DIM divisor (metric)
5000 cm³/kg
Dimension rounding (imperial / metric)
up / up to whole in · cm
DIM weight rounding
up to whole lb · up to whole kg
Actual weight rounding
up to whole lb · up to whole kg
Minimum billable weight
40 lb when fedex-ahs-dimension applies; 90 lb when fedex-unauthorized applies

Surcharge thresholds

  • Additional Handling — Dimensioneffective 2026-01-12

    • longestSide: > 48 in
    • secondSide: > 30 in
    • lengthPlusGirth: > 105 in (effective 2021-01-18)
    • volume: > 10368 cu-in (effective 2026-01-12)

  • Additional Handling — Weight

    • actualWeight: > 50 lb

  • Oversizeeffective 2026-01-12

    • longestSide: > 96 in (effective 2021-01-18)
    • lengthPlusGirth: > 130 in (effective 2021-01-18)
    • volume: > 17280 cu-in (effective 2026-01-12)
    • actualWeight: > 110 lb (effective 2026-01-12)

  • Unauthorized Package (Ground)

    • longestSide: > 108 in
    • lengthPlusGirth: > 165 in
    • actualWeight: > 150 lb

Size limits

  • Max length: > 108 in
  • Max length + girth: > 165 in
  • Max weight: > 150 lb

Notes

  • Dimensions round UP to the next whole inch/cm since 2025-08-18 (any fraction rounds up).
  • Only the highest of Additional Handling, Oversize, and Unauthorized Package charges applies (post 2026-01-12).
  • AHS–Dimension packages carry a 40-lb minimum billable weight; Ground unauthorized packages carry a 90-lb minimum.
  • US domestic Express packages over the maximum limits are not accepted; Ground packages incur the Unauthorized Package Charge.

Official sources

UPS DailyDaily Rates

Last verified 2026-08-30. No published effective date.

DIM divisor (imperial)
139 in³/lb
DIM divisor (metric)
5000 cm³/kg
Dimension rounding (imperial / metric)
up / up to whole in · cm
DIM weight rounding
up to whole lb · up to whole kg
Actual weight rounding
up to whole lb · up to whole kg
Minimum billable weight
90 lb when ups-large-package applies

Surcharge thresholds

  • Additional Handling

    • longestSide: > 48 in
    • secondSide: > 30 in
    • actualWeight: > 50 lb
    • Cubic size (domestic): > 10368 cu-in

  • Large Package

    • lengthPlusGirth: > 130 in
    • longestSide: > 96 in
    • volume: > 17280 cu-in (effective 2026-01-26)
    • actualWeight: > 110 lb (effective 2026-01-26)

Size limits

  • Max length: > 108 in
  • Max length + girth: > 165 in
  • Max weight: > 150 lb

Notes

  • Large Packages carry a 90-lb minimum billable weight.
  • Additional Handling is not assessed when the Large Package Surcharge applies.
  • Packages over the maximum limits are not accepted for transportation; if found in the UPS system they are subject to an Over Maximum Limits charge.
  • UPS dimensions now round UP to the next whole inch (the official page previously said nearest; the change date is not officially published).
  • The Large Package volume (> 17,280 in³) and weight (> 110 lb) triggers are encoded per third-party consensus with effective date 2026-01-26; an official UPS page stating them was not retrievable at encoding time. The weekly source monitor re-checks official pages and flags changes for manual review.
  • UPS does not apply a 105-in length+girth Additional Handling threshold (unlike FedEx).

Official sources

UPS RetailRetail Rates

Last verified 2026-08-30. No published effective date.

DIM divisor (imperial)
166 in³/lb
DIM divisor (metric)
5000 cm³/kg
Dimension rounding (imperial / metric)
up / up to whole in · cm
DIM weight rounding
up to whole lb · up to whole kg
Actual weight rounding
up to whole lb · up to whole kg
Minimum billable weight
90 lb when ups-large-package applies

Surcharge thresholds

  • Additional Handling

    • longestSide: > 48 in
    • secondSide: > 30 in
    • actualWeight: > 50 lb
    • Cubic size (domestic): > 10368 cu-in

  • Large Package

    • lengthPlusGirth: > 130 in
    • longestSide: > 96 in
    • volume: > 17280 cu-in (effective 2026-01-26)
    • actualWeight: > 110 lb (effective 2026-01-26)

Size limits

  • Max length: > 108 in
  • Max length + girth: > 165 in
  • Max weight: > 150 lb

Notes

  • Large Packages carry a 90-lb minimum billable weight.
  • Additional Handling is not assessed when the Large Package Surcharge applies.
  • Packages over the maximum limits are not accepted for transportation; if found in the UPS system they are subject to an Over Maximum Limits charge.
  • UPS dimensions now round UP to the next whole inch (the official page previously said nearest; the change date is not officially published).
  • The Large Package volume (> 17,280 in³) and weight (> 110 lb) triggers are encoded per third-party consensus with effective date 2026-01-26; an official UPS page stating them was not retrievable at encoding time. The weekly source monitor re-checks official pages and flags changes for manual review.
  • UPS does not apply a 105-in length+girth Additional Handling threshold (unlike FedEx).

Official sources

USPS Priority MailPriority Mail / Priority Mail Express (retail & commercial)

Last verified 2026-08-30. Current rule set effective 2026-07-12.

DIM divisor (imperial)
139 in³/lb
DIM divisor (metric)
5021.69 cm³/kg
Dimension rounding (imperial / metric)
up / up to whole in · cm
DIM weight rounding
up to whole lb · up to whole kg
Actual weight rounding
up to whole lb · up to whole kg
DIM volume threshold
applies above 1,728 in³ (1,728 = 1 ft³)
DIM weight cap
70 lb

Surcharge thresholds

  • Nonstandard Lengtheffective 2026-07-12

    • Length fee applies: > 22 in
    • Higher length fee applies: > 30 in

  • Nonstandard Cubic Volumeeffective 2026-07-12

    • volume: > 3456 cu-in

Size limits

  • Max length + girth: > 108 in
  • Max weight: > 70 lb

Notes

  • DIM divisor changed from 166 to 139 on 2026-07-12; every dimension now rounds UP to the next whole inch.
  • DIM weight applies only when the rounded volume EXCEEDS 1,728 in³ (1 cubic foot).
  • DIM weight above 70 lb is priced at the 70-pound price (capped).
  • Ground Advantage and Parcel Select allow length + girth up to 130 in (with an oversized price above 108 in); Priority Mail and Priority Mail Express are limited to 108 in.
  • Only the highest nonstandard length/characteristics fee applies; the cubic-volume fee can be added to it.
  • USPS publishes imperial rules only; the metric divisor shown is the exact equivalent of 139 in³/lb.
  • DMM 223.1.4.3 (Priority Mail commercial, non-rectangular) still shows divisor 166 with round-off — a likely USPS drafting anomaly; DimCheck models rectangular packages with 139/round-up as published elsewhere in the DMM.

Official sources

DHL ExpressExpress international (Worldwide)

Last verified 2026-08-30. Current rule set effective 2026-01-01.

DIM divisor (imperial)
139 in³/lb
DIM divisor (metric)
5000 cm³/kg
Dimension rounding (imperial / metric)
nearest / nearest to whole in · cm
DIM weight rounding
up to whole lb · up to 0.5 kg
Actual weight rounding
up to whole lb · up to 0.5 kg

Surcharge thresholds

  • Overweight Piece

    • actualWeight: > 70 kg
    • dimWeight: > 70 kg

  • Oversize Pieceeffective 2026-01-01

    • longestSide: > 100 cm
    • secondSide: > 80 cm (effective 2026-01-01)

Size limits

  • Max piece length: > 120 cm
  • Max piece width/height: > 80 cm
  • Max piece weight (else palletize): > 70 kg
  • Not accepted above: > 300 cm

Notes

  • DHL publishes no official dimension-rounding convention; DimCheck rounds each side to the nearest whole cm as a working assumption. DHL may re-measure and re-weigh pieces.
  • Volumetric weight rounds UP to the next 0.5 kg per piece.
  • Oversize Piece does not apply to pieces already subject to the Overweight Piece surcharge.
  • Pieces over 70 kg must be palletized; shipments over 3,000 kg (or pieces over 1,000 kg) are not accepted.
  • Surcharge amounts are country-specific and change annually — see the destination-country Service & Rate Guide.

Official sources

Rule sources are re-checked weekly by an automated change detector that only flags pages for human review — it never edits rules automatically. See the methodology for how rules are maintained.