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Linear Inches Calculator.
Add length, width, and height measurements expressed in inches.
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02 / ANSWER
Total linear inches: 35
FAQs
How does the linear inches calculator work?
Add length, width, and height measurements expressed in inches.
Use Cases
Check airline luggage size
Ensure your suitcase or carry-on meets airline size limits by calculating its linear inches.
Example: A carry-on measuring 22 x 14 x 9 inches = 45 linear inches.
Estimate shipping dimensions
Determine if a package meets courier size requirements or to compare shipping costs.
Example: A box 18 x 12 x 10 inches = 40 linear inches.
Frequently Asked Questions
- What is linear inches?
- Linear inches is the sum of an object's length, width, and height in inches. It's commonly used for airline luggage size limits and shipping measurements.
- How do I calculate linear inches?
- Measure the length, width, and height of your item in inches, then add the three numbers together. For example, a bag that is 22 x 14 x 9 inches has 45 linear inches.
- Why is linear inches important?
- Airlines and shipping companies often use linear inches to enforce size restrictions. Knowing your item's linear inches helps you avoid extra fees or ensure it fits in overhead bins or cargo spaces.
Tips & Common Mistakes
Tips
- Measure the longest points of length, width, and height, including wheels and handles.
- Use a flexible tape measure for curved or irregularly shaped items.
- Round up to the nearest inch to ensure you stay within size limits.
- Double-check your measurements before finalizing your calculation.
Common Mistakes to Avoid
- Forgetting to include protruding parts like wheels, handles, or pockets.
- Measuring in centimeters but not converting to inches before adding.
- Adding only two dimensions instead of all three.
Last updated: August 13, 2026