Luggage Size Calculator

How to measure and calculate

1. Measure the packed bag at its widest outside points, including wheels, handles and filled outer pockets.
2. Choose cm or inches, then enter the three measured lengths. The sum appears immediately.
3. If needed, open the comparison, enable it and enter the published combined-size limit in its own unit. Copy or print the current summary.

What this calculator does

• Adds three outside dimensions without multiplying them.
• Shows the sum in centimeters and inches.
• Compares exactly with one combined-size limit you enter.
• Copies or prints the current calculation with its scope and qualifications.

When it helps

• Measure a packed suitcase before checking its combined dimensions.
• Understand a luggage specification written in a different unit.
• Compare a published combined limit before choosing a bag.

Understanding linear dimensions

Combined size = length + width + height. This is a length sum, not volume.

Measure each axis at its widest point. Include protrusions and filled pockets: a soft bag may be larger when packed than when empty. The sum does not depend on which axis you call length.

Some converted fields are rounded. The original measurement is retained until you edit the field. ≈ marks display rounding. Decisions use the exact entered numbers, not the rounded totals; measuring accuracy still matters.

One inch is exactly 2.54 cm. Exactly 62 in equals 157.48 cm, while 158 cm is approximately 62.20 in. If a policy pairs rounded limits, confirm which unit governs your booking instead of treating the values as identical.

Worked examples

55 + 40 + 23 cm = 118 cm, approximately 46.46 in. Without an entered limit, no airline allowance is checked.

70 + 50 + 35 cm = 155 cm. Against an entered 158 cm limit, the margin is 3 cm. Changing the first edge to 75 cm gives 160 cm, an excess of 2 cm.

27 + 21 + 14 in = 62 in = 157.48 cm. This is exactly at a 62 in limit, but 0.52 cm below a 158 cm limit. A 158 cm sum is instead over a 62 in limit by 0.52 cm.

What the result cannot establish

This does not establish airline allowance. Check the operating airline’s current booking rules, including each edge, weight and exceptions; measure the actual packed bag.

Weight, piece counts, cabin sizers, individual-edge restrictions and ticket or route exceptions are outside this calculation. Entered-number exactness does not remove tape-measure uncertainty. App bounds of 300 cm per edge and 900 cm per limit are not airline rules.

Your measurements and privacy

Calculations run locally. Inputs stay in page memory; the surrounding site may make normal requests and use consent-aware integrations.

No measurement is added to a saved URL, account or upload. Copy and print are requested actions; leaving or reloading the page clears the calculator’s memory.