1. What Are Linear Inches?

Linear inches is a measurement used by airlines to determine if a piece of luggage meets size requirements. It's the sum of the length, width, and height of a bag.

2. How Linear Inches Are Calculated

The calculation is simple:

Where:

• Length — The longest side of the luggage
• Width — The side perpendicular to length
• Height — The remaining vertical dimension

Example: A suitcase measuring 22" × 14" × 9" would have 45 linear inches (22 + 14 + 9).

3. Importance of Linear Inches

Details: Most airlines have linear inch restrictions for checked and carry-on baggage. Exceeding these limits may result in additional fees or being forced to check carry-on items.

4. Using the Calculator

Tips: Measure your luggage at its widest points, including wheels and handles. Enter dimensions in inches (all values must be greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: What's the typical linear inch limit for carry-ons?
A: Most airlines allow 45 linear inches for carry-ons, but check with your specific airline as policies vary.

Q2: Do soft-sided bags get measured differently?
A: Soft bags should be measured when fully packed, as they may expand beyond their stated dimensions.

Q3: Are wheels and handles included in measurements?
A: Yes, all protruding parts are included in the linear inch calculation.

Q4: What about international flights?
A: International flights often have stricter size limits, sometimes using centimeters instead of inches.

Q5: Is weight considered in linear inches?
A: No, weight is a separate restriction. Your bag must meet both size and weight requirements.