1. What is USPS Girth?

USPS girth is a measurement used by the United States Postal Service to determine package size restrictions and pricing. It represents the distance around the thickest part of a package when measured perpendicular to the length.

2. How Does the Calculator Work?

The calculator uses the USPS girth formula:

Where:

• \( Width \) — Package width in inches
• \( Height \) — Package height in inches

Explanation: The formula calculates the total distance around the package by adding the width and height, then doubling that sum.

3. Importance of Girth Calculation

Details: Accurate girth calculation is essential for determining USPS shipping rates, package size restrictions, and ensuring proper postage for mailed items.

4. Using the Calculator

Tips: Enter package width and height in inches. Both values must be valid positive numbers. The calculator will compute the girth measurement used by USPS.

5. Frequently Asked Questions (FAQ)

Q1: How is girth different from perimeter?
A: Girth specifically refers to the measurement around the thickest part of a package, while perimeter is the total distance around a 2D shape.

Q2: What is the maximum girth allowed by USPS?
A: USPS has different girth limits depending on the mail class, typically ranging from 84 to 130 inches for most services.

Q3: How do I measure package dimensions for USPS?
A: Measure the length, width, and height at the longest points. Length is the longest side, and girth is 2×(width+height).

Q4: Does USPS use girth for all packages?
A: Girth is primarily used for irregularly shaped packages and those that exceed certain size thresholds for standard pricing.

Q5: How does girth affect shipping costs?
A: Packages with larger girth measurements may be subject to dimensional weight pricing or additional surcharges.