1. What is Length + Girth Calculation?

The Length + Girth calculation is used by USPS to determine if a package meets their size requirements. The combined measurement cannot exceed 108 inches for most mail classes.

2. How Does the Calculator Work?

The calculator uses the USPS formula:

Where:

• Length — Longest dimension of the package
• Width — Measurement of the shorter side
• Height — Measurement of the vertical side

Explanation: The girth is calculated by adding the width and height and multiplying by 2, then adding the length.

3. Importance of Length + Girth Calculation

Details: USPS uses this calculation to ensure packages can be processed through their automated equipment and to determine applicable postage rates.

4. Using the Calculator

Tips: Enter all dimensions in inches. Measure at the longest points of each side. Round to the nearest quarter inch for accuracy.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum Length + Girth for USPS packages?
A: For most mail classes, the maximum is 108 inches. Priority Mail Express has a 130-inch limit.

Q2: How do I measure irregularly shaped packages?
A: Measure at the longest points in each dimension. For cylindrical items, width and height are both the diameter.

Q3: Does USPS charge more for larger packages?
A: Yes, dimensional weight pricing may apply for larger, lightweight packages.

Q4: What if my package exceeds the maximum?
A: You may need to use a different shipping service or split your shipment into multiple packages.

Q5: Are there different rules for international shipments?
A: Yes, some countries have stricter size limitations. Check USPS international guidelines.