TAYLOR'S TRAILBLAZING TRAVEL GEAR / FREE TOOL
Suitcase Volume Calculator
Put your measurements into perspective. Calculate a rectangular volume in litres and compare two sets of dimensions, without a database of airline rules or products.
Calculate a volumeYour dimensions
Enter height, width and depth in cm or inches.
Clear maths
Height x width x depth, with the working shown.
Honest limits
A rectangular volume is not usable packing capacity.
Easy comparison
Compare two bags using the same measurement basis.
01What do the dimensions add up to?
Measure consistently. Outside measurements describe an imaginary box around the bag; inside measurements describe an approximate rectangular compartment. Neither certifies usable capacity or airline acceptance.
Numbers with context
Your result will show what was calculated — and what it cannot tell you about a real suitcase.
02The maths is simple. The meaning matters.
This tool calculates geometry, not a manufacturer's tested capacity. Keep that distinction in mind when comparing bags.
Outside is an envelope
Outside height, width and depth form a rectangular box around the bag. Wheels, handles, shell thickness and rounded corners can all occupy part of that envelope. Do not read its volume as the amount you can pack.
Inside is still an estimate
Internal measurements describe a rectangular compartment. Curves, dividers and fittings can reduce usable space. There is no automatic percentage deduction here: the tool cannot know your bag's actual construction.
Compare like with like
Use outside measurements for both bags, or inside measurements for both. Bag B's percentage difference is calculated relative to Bag A. More rectangular volume does not mean a guaranteed number of extra clothes.
Not an airline checker: this tool has no airline allowances, baggage categories or pass/fail decisions. A volume result never confirms that a bag will be accepted, fit a storage space or avoid extra charges.
Method: 1 litre = 1,000 cubic centimetres; 1 inch = 2.54 centimetres. Measurements in inches are converted to centimetres before multiplying. Results are rounded for display; comparisons use the unrounded calculation.
Shop useful gear
Optional retailer links. Check your existing kit first — there is no need to buy anything to use this tool.
Compare cabin luggage
Browse the collection, then check the maker's own capacity and measurements for each bag.
Browse cabin luggage (opens in a new tab)Explore suitcase options
Visit the retailer for luggage details. This calculator does not match or approve products.
Explore Aerolite (opens in a new tab)Consider a backpack
Browse the travel backpack collection. A soft bag's usable space is not a rectangular box.
Browse travel backpacks (opens in a new tab)Retailer sites open in a new tab. Check current product details and terms there; no price, stock, suitability or airline-acceptance claim is made here.
Common questions
Is the result my suitcase's actual capacity?
No. With outside measurements, it is the rectangular envelope around the bag. With inside measurements, it is a rectangular-compartment estimate. Neither includes a test of how much can actually be packed.
Should I include wheels and handles?
For the outside envelope, measure the outside dimensions consistently, including protruding parts. For an internal-compartment estimate, measure the compartment itself. The tool does not compare either measurement with airline or storage rules.
Why might the manufacturer publish a different litre figure?
A rectangular calculation and a manufacturer's capacity figure may describe different things or use different methods. Shape, fittings and the measurement basis matter. Check the manufacturer's own explanation rather than treating this result as a correction to its stated capacity.
Does a 15% bigger result mean I can pack 15% more?
Not necessarily. The percentage describes only the calculated rectangular volumes. Real packing space depends on the bag's shape, structure, compartments and how you pack.
Does switching from centimetres to inches change the physical dimensions?
No. The entered values are converted. Small differences can occur in rounded displays; the main result is calculated using the entered values and the exact conversion of 2.54 centimetres per inch.
Does the calculator store my measurements?
No automatic storage or account is used. The tool does not upload entries. Use Download result or the print view to keep a copy before leaving the page.