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Carrier Dimensional (DIM) Weight & Carton Rightsizing Calculator
x402
Carrier Dimensional (DIM) Weight & Carton Rightsizing Calculator is a paid API for AI agents from x402-niche-briefs.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Calculates dimensional weight vs actual billable weight for UPS/FedEx and USPS Ground Advantage, and identifies carton rightsizing savings opportunities.
Price / call$0.01
Success—
StatusUnknown
How this service works
Deterministic parcel dimensional weight vs actual billable weight calculator. Pass ?length_in=14&width_in=10&height_in=6&actual_lb=3.2&divisor=139. Compares UPS/FedEx (139 divisor) and USPS Ground Advantage (166 divisor >1 cu ft), cubic size, length+girth oversize risk, and billable weight saved by trimming carton height by 1 inch.
Output
Returns a JSON object with: input echo, geometry data (cubic inches, cubic feet, length+girth, oversize risk flag), weight comparison (actual weight, DIM weight, billable weight, which weight is billed, USPS Ground Advantage billable weight), and a rightsizing opportunity showing how much billable weight is saved by reducing carton height by 1 inch.
Example use cases
Carrier selection for heavy small box
“I have a box that's 12 inches long, 8 inches wide, 5 inches tall, and actually weighs 4.5 lbs — can you calculate the DIM weight and tell me whether UPS/FedEx or USPS Ground Advantage would give me a lower billable weight?”
Oversize surcharge risk check
“My carton is 18 x 14 x 12 inches and weighs 6 lbs — does it risk an oversize surcharge, and what's the DIM weight using the standard 139 divisor?”
Carton rightsizing to cut shipping costs
“We ship a box that's 16x12x8 inches at 2.8 lbs actual weight — how much billable weight would we save by trimming the height by 1 inch, and does it change whether we're billed by DIM or actual weight on UPS?”
Technical details
Endpoint
GEThttps://x402-niche-briefs.fly.dev/v1/dimensional-weight-calc?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, deterministic, carrier-agnostic DIM weight calculation without calling a carrier API or building the math yourself. Ideal for e-commerce agents optimizing packaging decisions, comparing UPS/FedEx vs USPS Ground Advantage costs, or flagging oversize surcharge risk before shipment. Prefer this over carrier APIs when you don't need a live rate quote but need quick billable weight math and rightsizing guidance.
Side effects
- Missing required query parameters (length_in, width_in, height_in, actual_lb) returns an error
- Non-numeric string values for dimension or weight fields cause parse errors
- Very large carton dimensions may flag oversize risk but do not block computation
- Custom divisor values outside normal carrier ranges (139, 166) are accepted but may produce unexpected comparisons
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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