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 calculated by adding together the length, width, and height of an item.

2. How To Calculate Linear Inches

The formula for calculating linear inches is simple:

Where:

• Length — The longest dimension of the item
• Width — The side-to-side measurement
• Height — The top-to-bottom measurement

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

3. Why Calculate Linear Inches?

Details: Airlines use linear inches to enforce baggage size restrictions. Most airlines allow checked bags up to 62 linear inches (length + width + height) without oversized baggage fees.

4. Using The Calculator

Tips: Measure your luggage at its widest points, including wheels and handles. Enter all dimensions in inches for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical linear inch limit for checked bags?
A: Most airlines allow up to 62 linear inches for standard checked baggage without extra fees.

Q2: Do carry-on bags have linear inch restrictions?
A: Yes, carry-ons typically have separate restrictions (often around 45 linear inches).

Q3: How do I measure irregularly shaped items?
A: Measure the longest points in each dimension, including any protrusions.

Q4: Does weight affect linear inch calculations?
A: No, linear inches only measure size. Weight restrictions are separate.

Q5: Are all airlines' linear inch limits the same?
A: No, limits vary by airline and sometimes by fare class, so always check with your specific airline.