# Linear Inches Calculator (Luggage Size)

URL: https://speedycalculator.com/calculators/everyday-life/linear-inches/
Last updated: 2026-10-25

> The linear inches calculator adds up a suitcase's length, width and height to get its linear inches (or centimetres) and checks it against typical airline limits for carry-on and checked bags.

## Inputs

- Length (height of bag) (in, cm)
- Width (in, cm)
- Depth (in, cm)

## Results

- Linear dimensions
- Fits as
- Volume

## Formula

```
Linear inches = length + width + height
Typical limits: carry-on 45 in (115 cm), checked 62 in (158 cm)
```

## Explanation

Airlines size baggage by total dimensions – length plus width plus height – including wheels and handles. Most U.S. airlines allow carry-ons up to about 22 × 14 × 9 in (45 linear inches) and checked bags up to 62 linear inches; oversize bags incur fees. Always check your airline's rules.

### How to use the Linear Inches Calculator

- **Length (height of bag)**
- **Width**
- **Depth**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Measure the bag including wheels and handles and enter the three dimensions.

### Tips

- Use the figures printed on your product or its manual when you have them.
- Round quantities up so you are never short.
- Measure twice before you buy anything cut to size.
- Everything runs in your browser – try different values to compare options.

### Common mistakes to avoid

- Mixing units (inches and centimetres, mAh and Ah).
- Ignoring efficiency losses and safety margins.
- Treating rules of thumb as exact.

### Inputs explained

FieldWhat to enterLength (height of bag)Units: in, cmWidthUnits: in, cmDepthUnits: in, cm

### What each result means

- **Linear dimensions** = [Length (height of bag)] + [Width] + [Depth]
- **Volume** = [Length (height of bag)]×[Width]×[Depth]

### Example values

How the main result changes when **Length** changes and everything else stays at the example values above:

Length (height of bag) (in)Linear dimensions (in)113416.539.5224527.550.533564467

## Worked example

Inputs — Length (height of bag): 22 in; Width: 14 in; Depth: 9 in.

Results — **Linear dimensions = 45 in**; Fits as = Carry-on (≤ 45 in); Volume = 45 L.

## FAQ

**What are linear inches?**
Length + width + height of a bag.

**What is the maximum checked bag size?**
62 linear inches (158 cm) on most airlines.

**Do wheels and handles count?**
Yes – measure from the floor to the top of the handle and include wheels.

**What formula does the Linear Inches Calculator use?**
Linear inches = length + width + height.