Linear Inches Calculator
Calculate linear dimensions for luggage, shipping, and airline compliance
Enter Dimensions
Longest dimension
Side to side
Top to bottom
📏 Important Measurement Tips
- • Include wheels, handles, and external pockets in measurements
- • Measure when luggage is fully packed and closed
- • Round up to the nearest half-inch for safety margin
- • Check both linear inches AND individual dimension limits
Results
Linear Dimensions
62.0"
157.5 cm
Formula: 30 + 18 + 14 = 62.0 linear inches
Volume
123.9 L
7560.0 cubic inches
Capacity: 30 × 18 × 14
Closest Standard Size
Large Checked
30 × 18 × 14 inches (62 linear inches)
Standard checked bag maximum
Airline Compliance Check
Carry-on (Most Airlines)
Typical carry-on size limit
✗ Too Large
Limit: 45"
Over by: 17.0"
Carry-on (Large Airlines)
Some major airlines allow up to 50"
✗ Too Large
Limit: 50"
Over by: 12.0"
Checked Bag (Standard)
Most common checked baggage limit
✓ Compliant
Limit: 62"
Checked Bag (Premium)
Some premium services allow larger bags
✓ Compliant
Limit: 70"
Oversized Bag
Usually requires extra fees
✓ Compliant
Limit: 80"
Understanding Linear Inches
What are Linear Inches?
Linear inches is the sum of the length, width, and height of an object expressed in inches. It's commonly used by airlines and shipping companies to determine size restrictions for luggage and packages.
Formula
Linear Inches = Length + Width + Height
Why Do Airlines Use Linear Inches?
- Accommodates various luggage shapes and sizes
- Provides a standardized measurement system
- Ensures efficient use of cargo space
- Simplifies size restrictions across different bag types
- Helps prevent oversized baggage issues
Common Size Limits
Carry-on Luggage
- • Most airlines: 45-50 linear inches
- • Budget airlines: Often 40-45 linear inches
- • International flights: May vary by region
Checked Baggage
- • Standard limit: 62 linear inches
- • Oversized (62-80"): Extra fees apply
- • Over 80": Often prohibited or very expensive
Measurement Tips
- Include everything: Wheels, handles, external pockets, and accessories
- Measure when packed: Soft-sided luggage can expand when filled
- Use a rigid measuring tape: For accurate measurements
- Round up: Give yourself a safety margin of 0.5-1 inch
- Check individual limits: Some airlines also have max length restrictions
Common Luggage Sizes
Small Carry-on
22 × 14 × 9 inches
Perfect for short trips
45"
linear
Medium Carry-on
22 × 16 × 10 inches
Weekend getaway size
48"
linear
Large Carry-on
24 × 16 × 10 inches
Maximum carry-on for most airlines
50"
linear
Medium Checked
26 × 18 × 10 inches
Week-long trips
54"
linear
Large Checked
30 × 18 × 14 inches
Standard checked bag maximum
62"
linear
Extra Large
32 × 20 × 14 inches
Extended travel or family trips
66"
linear