Bag Volume Calculator
Quickly convert suitcase or duffel dimensions into an estimated capacity so you can plan packing lists and airline carry-on compliance.
How to Use This Calculator
Measure your bag
Use a tape measure to record interior length, width, and depth. For suitcases with wheels or handles, measure the usable compartment.
Enter the dimensions
Input the numbers in inches. The calculator converts them into volume automatically.
Compare with carry-on limits
Optional: enter your airline’s carry-on volume limit to see if the bag qualifies.
Formula
Volume (in³) = Length × Width × Depth
Liters: in³ × 0.0163871
Cubic feet: in³ ÷ 1728
Recommended packing volume: Total volume × 0.8 (leave 20% free space)
Example: 22 × 14 × 9 = 2772 in³ → 45.4 L total → 36.3 L recommended for packing.
About the Bag Volume Calculator
Packing capacity varies by bag shape and construction. This calculator provides a quick interior volume estimate so you can compare suitcases, duffels, and backpacks before a trip.
When to Use This Calculator
- Trip planning: Ensure luggage can hold planned outfits and gear.
- Carry-on compliance: Check whether a bag stays under airline limits.
- Comparing bags: Evaluate capacity differences between models.
- Storage planning: Estimate container volume for moving or camping supplies.
Why Use Our Calculator?
- ✅ Instant conversions: Outputs in liters, cubic inches, and cubic feet.
- ✅ Packing guideline: Suggests an 80% fill level for realistic packing capacity.
- ✅ Travel ready: Optional comparison against carry-on limits.
- ✅ Mobile friendly: Use while shopping in-store or online.
Common Applications
Frequent fliers: Pick the right suitcase size for short or long trips.
Outdoor adventurers: Evaluate duffel capacity for camping or climbing gear.
Minimalist packers: Track how many liters your capsule wardrobe requires.
Tips for Best Results
- Measure internal compartments separately if the bag has multiple sections.
- Subtract the thickness of rigid frames or padding if they occupy volume.
- Use packing cubes to make the most of the recommended 80% capacity.
- Remember carry-on limits may also include weight and linear dimension requirements.
Frequently Asked Questions
Does this calculator account for curved corners?
It assumes a simple rectangular interior. Rounded corners, wheel housings, or padding reduce usable capacity slightly.
What carry-on limit should I enter?
Check your airline’s website. Many allow around 40–45 liters, but some low-cost carriers restrict to 30–35 liters.
How do I convert European centimeter measurements?
Divide centimeters by 2.54 to obtain inches, or measure in inches directly. Future updates may include centimeter input.
Can I use this for storage bins or boxes?
Yes! The formula works for any rectangular container such as moving boxes, plastic totes, or drawers.