Multiply length x width x height in centimeters and divide by 1,000 for liters. In inches, multiply the cubic inches by 0.016387.
You have
Size in liters
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Makers’ suitcases in liters
| Suitcase | Outside size | Outside box | Maker’s capacity |
|---|---|---|---|
| Monos Carry-On | 22 x 14 x 9 in (55.88 x 35.56 x 22.86 cm) | 45.4 L | 39.9 L |
| Monos Carry-On Plus | 23 x 15 x 9.5 in (58.42 x 38.1 x 24.13 cm) | 53.7 L | 45.9 L |
| Monos Check-In Medium | 26.5 x 18.5 x 10.5 in (67.31 x 46.99 x 26.67 cm) | 84.4 L | 70.8 L |
| Monos Check-In Large | 30 x 21 x 11 in (76.2 x 53.34 x 27.94 cm) | 113.6 L | 97.3 L |
| Away The Carry-On | 22 x 14.4 x 9.1 in (about 55.9 x 36.6 x 23.1 cm) | 47.2 L | 41 L |
| Away The Bigger Carry-On | 23 x 15.4 x 9.4 in (about 58.4 x 39.1 x 23.9 cm) | 54.6 L | 49 L |
| Away The Medium | 26 x 18.5 x 10.8 in (about 66 x 47 x 27.4 cm) | 85.1 L | 72 L |
| Away The Large | 29 x 20.5 x 12.5 in (about 73.7 x 52.1 x 31.8 cm) | 121.8 L | 104 L |
| Travelpro Maxlite 5 Compact Carry-On Spinner | 22 x 14 x 9 in (about 55.9 x 35.6 x 22.9 cm) | 45.4 L | 38 L |
| Travelpro Maxlite 5 International Carry-On Spinner | 21.75 x 15.75 x 7.75 in (about 55.2 x 40 x 19.7 cm) | 43.5 L | 39 L |
| Travelpro Maxlite 5 Carry-On Rollaboard (22 inch) | 23 x 14.5 x 9 in (about 58.4 x 36.8 x 22.9 cm) | 49.2 L | 52 L |
| Travelpro Maxlite 5 Medium Check-In Spinner (25 inch) | 27 x 18.5 x 11.5 in (about 68.6 x 47 x 29.2 cm) | 94.1 L | 91 L |
| Travelpro Maxlite 5 Medium Check-In Rollaboard (26 inch) | 28 x 19 x 11 in (about 71.1 x 48.3 x 27.9 cm) | 95.9 L | 100 L |
| Travelpro Maxlite 5 Large Check-In Spinner (29 inch) | 31 x 21 x 13 in (about 78.7 x 53.3 x 33 cm) | 138.7 L | 142 L |
| Samsonite Upscape Spinner expandable 55cm | 55 x 40 x 20 cm (about 21.7 x 15.7 x 7.9 in) | 44 L | 39/45 L |
| Samsonite Upscape Spinner expandable 68cm | 68 x 47 x 28 cm (about 26.8 x 18.5 x 11 in) | 89.5 L | 75/83 L |
| Samsonite Upscape Spinner expandable 75cm | 75 x 51 x 30 cm (about 29.5 x 20.1 x 11.8 in) | 114.8 L | 104/114 L |
| Samsonite Upscape Spinner expandable 81cm | 81 x 54 x 34 cm (about 31.9 x 21.3 x 13.4 in) | 148.7 L | 133/145 L |
Outside box: length x width x height, worked out here. Capacity: the maker’s figure; two figures are normal and expanded.
Why the two figures differ
The outside box includes the wheels, handles and shell. Monos and Away give less capacity than the box for every suitcase here: Away’s Carry-On is a 47.2 liter box and holds 41 L by Away’s figure. Travelpro gives more than the box for its 22, 26 and 29 inch suitcases: its 29 inch is a 138.7 liter box with its wheels, and Travelpro gives 142 L, so makers don’t all measure capacity the same way.
To check a size against the airlines, use Will my bag fit?. For trip length, see what size suitcase for my trip.