Inches to Centimetres Bag Converter
Convert bag dimensions between inches and centimetres and check them against a cabin or checked baggage allowance.
About this tool
Inches to Centimetres Bag Converter
Convert bag dimensions between inches and centimetres and check them against a cabin or checked baggage allowance.
The Inches to Centimetres Bag Converter turns bag dimensions between inches and centimetres at the exact rate of 1 inch = 2.54 cm, then tests whether the bag fits a chosen cabin or checked allowance. The fit test sorts your three dimensions and the allowance's three dimensions from largest to smallest and compares them pairwise, which is the correct check for whether a rectangular case will pass a rectangular gauge in any orientation. It also reports the linear total — length plus width plus height — against the 62 linear inch (158 cm) checked-bag limit most airlines publish.
How to use Inches to Centimetres Bag Converter
- 1
Open Inches to Centimetres Bag Converter on AltFTool — it loads instantly in your browser.
- 2
Type your case's Length, Width and Depth / height, and set Measured in to Inches or Centimetres.
- 3
Pick a published allowance from the Allowance menu, or choose 'Enter my airline's own figures' and type its three dimensions.
- 4
The converted size appears with a fits-in-some-orientation verdict or the worst-side overhang in cm, plus Linear total (L + W + H) against the 158 cm checked-bag limit.
Why use Inches to Centimetres Bag Converter
Exact, not rounded
Uses 2.54 cm per inch exactly, so a borderline bag is not wrongly cleared or wrongly failed.
Orientation-aware fit test
Compares sorted dimensions, so turning the bag on its side is accounted for.
Linear total included
Handles the airlines that publish a single length + width + height figure instead of three.
Common use cases
- Checking a suitcase advertised as 22 × 14 × 9 inches against a European airline that publishes 55 × 40 × 20 cm.
- Working out how much a bag overhangs the cabin gauge before deciding whether to gate-check it.
- Confirming a large checked case stays inside the 158 cm linear allowance before paying an oversize fee.
Frequently asked questions
What is 22 x 14 x 9 inches in centimetres?
55.88 × 35.56 × 22.86 cm, a linear total of 114.3 cm. That is the classic US carry-on size and it is slightly longer than the 55 cm many European and Asian carriers allow, which is why the same case passes in one region and not the other.
What does 62 linear inches mean for a checked bag?
It is the sum of length, width and height, and 62 inches equals 157.48 cm — usually published as 158 cm. A 77 × 52 × 28 cm case totals 157 cm and just clears it; exceeding the total triggers an oversize fee even when no single side looks unusual.
Do wheels and handles count towards the cabin bag size?
Yes. Airlines measure the bag at its widest points, including wheels, telescopic handle housings, side pockets and anything strapped to the outside, and the sizer at the gate is a hard box with no give. Buy or pack a bag a couple of centimetres inside the stated limit rather than exactly on it.
How many centimetres is 1 inch?
Exactly 2.54 cm. The figure has been definitional since the 1959 international yard and pound agreement fixed the yard at 0.9144 m, so it is not a rounded approximation.
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