Luggage & Suitcase Size Guide - 5 Common Suitcase Sizes in Australia
The dimensions of a suitcase determine how much you can pack and whether it meets airline size rules. This guide will explain the five most common luggage sizes in Australia and how to select the best one for your needs, from compact carry-ons to oversized suitcases for long trips.
The 5 common luggage sizes and dimensions are:
1. Under Seat Personal Item: 40cm Height × 30cm Width × 15cm Depth
2. Carry On Cabin Suitcase: up to 56 Height × 36 Width × 23 cm Depth
3. Medium Sized Suitcase: 60–69 cm Height x 45 Width x 26cm Depth
4. Large Sized Suitcase: 70–79 cm Height x 50 Width x 30 cm
5. Extra-Large Suitcase: 80cm+ Height x 51cm Width x 36 cm Depth
| Luggage Type | Typical Dimensions (H×W×D) | Capacity (Approx) | Ideal Use |
|---|---|---|---|
| Underseat Item | 40 × 30 × 15 cm (fits under seat) | 20–30 L | Personal item for flights (laptop bag, handbag) – short trips, daily essentials. |
| Carry-On (Cabin) | Up to 56 × 36 × 23 cm | 30–45 L | Cabin luggage for weekend trips (2–3 days). Meets most airline carry-on limits (7–8 kg weight max). |
| Medium Suitcase | 68 × 45 × 26 cm (24–27″ tall) | 60–80 L | Checked bag for week-long travel (~7 days). Balanced capacity and portability. |
| Large Suitcase | 76 × 50 × 30 cm (28–30″ tall) | 100–120 L | Checked bag for 10–14 day trips or two people sharing. Maximum standard size for airlines (~158 cm linear). |
| Extra-Large Suitcase | 80+ cm tall (e.g. 81 × 51 × 36 cm) | 120 L or more | Extended travel or oversize needs (bulk gear, relocation). May exceed airline size limits – check before flying. |
1. Under Seat Personal Luggage
A small bag that fits under an airline seat, often used as a secondary carry-on.
Ideal for: Laptops, handbags, or day-trip essentials.
Dimensions:
Height: 40-45cm high
Width: 35 cm wide
Depth: 20cm deep
Capacity: 20-30L
2. Carry On Cabin Suitcase
Standard maximum cabin luggage size for most Australian airlines, usually limited to about 7-8kg.
Ideal for: 2-3 day trips.
Dimensions:
Height: up to 56cm high
Width: 36 cm wide
Depth: 23cm deep
Capacity: 30-45L
3. Medium Checked Suitcase
Medium sized luggage offer balance between capacity and portability, generally likely to stay under the typical 23kg weight limit.
Ideal for: 5-7 day trips.
Dimensions:
Height: up to 69cm high
Width: 45 cm wide
Depth: 26 cm deep
Capacity: 60-80L
4. Large Checked Suitcase
Large sized luggage offer ample space for family or couple travellers.
Ideal for: 10–14 day trips.
Dimensions:
Height: up to 79 cm high
Width: 50 cm wide
Depth: 30 cm deep
Capacity: 100-120L
5. Extra Large Suitcase
Oversized luggage offers maximum packing space for extended travel or moving.
Ideal for: Extended travel, storage or moving household items.
Dimensions:
Height: 80+ cm high
Width: 51 cm wide
Depth: 36 cm deep
Capacity: 120L+
Additional Luggage & Suitcase Specs & FAQ
Do suitcase dimensions include wheels and handles?
Yes, when manufacturers and airlines refer to luggage dimensions, they generally include all external parts like wheels, handles, and side pockets in the measurement. It’s important to measure your bag end-to-end (including protruding parts) to ensure it complies with airline size restrictions.
How are luggage sizes measured and why does it matter?
Luggage size is measured by external dimensions (H × W × D) and by linear dimensions (H + W + D); airlines use linear dimensions to enforce the baggage limits, and measurements include wheels and handles.
How do you measure luggage size?
Measure the suitcase’s external height, width, and depth (H × W × D) using a tape measure, including wheels, handles, and any protrusions; add these together to calculate the linear dimension.
Does carry-on luggage size include wheels?
Yes, carry-on luggage dimensions always include wheels, handles, and all external parts.
What size suitcase is suitable for 23 kg?
A medium to large suitcase (68–75 cm high) is typically suitable for 23 kg, depending on packing style and the suitcase’s empty weight.
What size suitcase is suitable for 30 kg?
A large or extra-large suitcase (75–81 cm high) is generally required for 30 kg, but airline size and weight limits should be checked, as many airlines cap checked luggage at 23 kg per bag.