1. What is USPS Combined Length and Girth?

The USPS Combined Length and Girth (CLG) is a measurement used by the United States Postal Service to determine package size restrictions. It's calculated by adding the longest side of the package to its girth (distance around the thickest part).

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Length \) — Longest dimension of the package (inches)
• \( Girth \) — Distance around the thickest part (inches)

Explanation: This calculation helps determine if a package meets USPS size requirements for different mail classes.

3. Importance of CLG Calculation

Details: USPS has maximum CLG limits (typically 108 inches) for many mail services. Exceeding these limits may result in additional fees or refusal of the package.

4. Using the Calculator

Tips: Measure the longest side of your package and its girth (circumference at the thickest point perpendicular to the length). Enter both values in inches.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum CLG for USPS packages?
A: For most services, the maximum is 108 inches. Priority Mail Express has a 130-inch limit for domestic shipments.

Q2: How do I measure girth?
A: Measure around the thickest part of your package perpendicular to the length. For rectangular boxes: 2 × (width + height).

Q3: Are there weight restrictions too?
A: Yes, USPS has both size and weight restrictions that vary by mail class (typically 70 lbs max for most services).

Q4: Does USPS charge more for larger packages?
A: Yes, dimensional weight pricing may apply for larger, lightweight packages.

Q5: What if my package exceeds the limits?
A: You may need to use a different mail class, split the shipment, or use a freight service instead.