๐งณ Suitcase Volume Calculator
Use either interior or exterior dimensions depending on what you need.
Calculate a suitcase or bag's volume in liters and its linear dimension (the sum of length, width, and height, sometimes used by airlines for baggage size limits) from its dimensions in cm.
How to use
- Enter the suitcase's length, width, and height (cm).
- Volume in liters and the linear dimension are calculated automatically.
How the calculation works
Calculate the capacity (litres) and the sum of the three sides (cm) of a suitcase or bag from its length, width and height. Capacity (L) = length ร width ร height รท 1000 Sum of sides = length + width + height Airlines set baggage limits by the sum of the sides and by each dimension. These are usually measured on the outside, including wheels and handles.
Worked example
A 55 ร 40 ร 20 cm suitcase Capacity = 55 ร 40 ร 20 รท 1000 = 44 L Sum of sides = 115 cm On most Japanese domestic flights (aircraft with 100+ seats), carry-on bags must be within a 115 cm total and 55 ร 40 ร 25 cm.
Things to be aware of
- Carry-on size and weight limits vary by airline, aircraft and fare. Always check with your airline.
- Capacity here is from the outside dimensions; the space inside is smaller by the thickness of the shell and frame.
- Rough guide: 20โ40 L for 1โ2 nights, 40โ70 L for 3โ5 nights, 70 L or more for a week or longer.
FAQ
How is volume calculated?
Length ร width ร height (cmยณ) divided by 1000 gives the volume in liters. Actual usable capacity varies somewhat with internal structure.
What is the linear dimension?
It's the simple sum of length, width, and height โ a figure some airlines reference for baggage size limits. Since the actual limit varies by airline, this tool only shows the total, not a pass/fail judgment.
Can this tell me if my bag meets carry-on size rules?
No โ this tool only calculates volume and linear dimension from the dimensions. It does not check against any specific airline's carry-on rules, since those vary by airline; always check your airline's own policy.