Girth Formula:
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Shipping girth is a measurement used in logistics to determine package size restrictions. It's calculated as twice the sum of the width and height of a package (2 × (W + H)). Many carriers use girth plus length to determine shipping rates and size limitations.
The calculator uses the girth formula:
Where:
Explanation: The girth represents the distance around the thickest part of the package when combined with its length.
Details: Shipping carriers often have maximum girth restrictions or use girth plus length to determine shipping rates. Accurate girth calculation helps avoid unexpected fees and ensures packages meet carrier requirements.
Tips: Measure package width and height at their largest points in inches. Enter values greater than zero for accurate calculation.
Q1: Why is girth important for shipping?
A: Carriers use girth to determine package size category, which affects pricing and whether the package can be shipped via certain services.
Q2: How do I measure package dimensions?
A: Use a measuring tape to measure at the longest/widest points. Width is the shorter side when viewed from the front.
Q3: What's the difference between girth and perimeter?
A: Girth specifically refers to 2 × (width + height) for shipping purposes, while perimeter would be the full distance around the package.
Q4: Do all carriers use girth the same way?
A: No, some use "length plus girth" (L+2W+2H) while others have different formulas. Check with your specific carrier.
Q5: What are typical girth limits?
A: For USPS, maximum is 130" for Priority Mail. UPS and FedEx have different limits depending on service.