Cabin Bag Size Checker: Compare Airline Dimensions

Cabin bag size checker

Measure your packed bag, including protrusions, and select the allowances on your itinerary. Edit any limit or add a custom allowance to see which dimensions exceed it.

Results

Dimension checks passed: 2 of 2
Bag dimensions, longest first: 40 × 30 × 20 cm

Each selected allowance is checked independently; all dimensions in cm
Allowance	Limits (sorted)	Longest side	Middle side	Shortest side	Result
Ryanair — included personal bag	40 × 30 × 20	Within	Within	Within	Dimensions fit
easyJet — included small bag	45 × 36 × 20	Within	Within	Within	Dimensions fit

Ryanair Priority overhead allowance requires Priority & 2 Cabin Bags entitlement and has a separate 10 kg maximum weight; this tool checks dimensions only.
Dimensions only: weight, bag count, fare entitlement and cabin space are not checked. Select only the allowance you booked for each leg.
Rotation is allowed in this geometric comparison. Soft-bag compression and airline discretion are not assumed. Confirm the packed bag fits the airline sizer.
Unedited presets checked 2026-11-14. Edited limits are your own assumptions.

How it works

Convert each bag dimension to centimeters using exactly 2.54 cm per inch. Sort both the bag dimensions and the selected allowance from longest to shortest, then compare each pair. This allows axis rotation, but no diagonal fitting or compression.

Excess on each side = max(0, bag side − allowed side) Dimensions fit only when all three sides fit

Decisions use unrounded numbers, with only a negligible floating-point tolerance. Displays round to two decimals; positive overruns below 0.01 cm are labelled explicitly. Airline limits always remain in centimeters when you change the bag unit.

The presets checked November 14, 2026 are Ryanair’s included 40 × 30 × 20 cm personal bag, its 55 × 40 × 20 cm Priority overhead bag, easyJet’s included 45 × 36 × 20 cm small bag and its 56 × 45 × 25 cm booked large bag. Ryanair announced the larger free bag rollout on September 4, 2025. The Ryanair overhead preset requires Priority & 2 Cabin Bags and has a separate 10 kg weight limit, which is not checked. Confirm fare entitlement before using a large-bag allowance. These commercial policies are dimension checks, not boarding guarantees.

Worked examples

One bag on two airlines

A 40 × 30 × 20 cm bag fits both the Ryanair included personal-bag preset and the easyJet included small-bag preset: 2 of 2 checks pass.

A long side that fails one airline

A 45 × 30 × 20 cm bag exceeds the Ryanair personal-bag longest side by 5 cm, but fits easyJet’s small-bag preset: 1 of 2 checks passes.

Inches on a large-bag booking

A 22 × 14 × 9 inch bag converts to 55.88 × 35.56 × 22.86 cm. Its dimensions fit the easyJet booked large-bag preset.

Frequently asked questions

Should wheels and handles be included?

Yes. Measure the packed outer dimensions, including handles, wheels and protrusions. easyJet explicitly includes handles and wheels in its dimensions.

Can I rotate the bag?

The comparison allows rotation by pairing longest with longest, middle with middle and shortest with shortest. It does not assume that a rigid bag can fit diagonally in a sizer.

Does fitting the dimensions mean my bag is included?

No. Weight, bag count and your booked entitlement are separate. The large easyJet preset is for a booked large cabin bag, not the included small bag.

What if my airline is not listed?

Enable the custom allowance and enter its three centimeter limits from your booking or official airline page. It is checked alongside your selected presets.

Can a soft bag slightly over the limit pass?

This tool does not assume compression or discretionary tolerance. Measure it as packed and confirm that it fits the airline’s sizer.

Sources

Ryanair — personal and Priority cabin bag policy (checked 2026-11-14)
Ryanair — larger free bag rollout, September 4, 2025 (checked 2026-11-14)
easyJet — small and booked large cabin bags (checked 2026-11-14)
NIST Handbook 44 — Appendix C length conversion table (checked 2026-11-14)

Last reviewed 2026-11-14; next review due by 2026-12-14. The method is written out above so you can check our math.