Beauty Calculators
Travel toiletry kit size.
Enter how many days you are away and how much of each product you use in a day. See how much to pack with a spare margin, and how many containers of 100 ml or less a carry-on needs. Runs in your browser; nothing is sent or stored.
Your trip
What to pack
Fill the form and press Calculate.
Worked example
10 days, 15% spare. Shampoo at 10 ml a day: 10 x 10 x 1.15 = 115 ml, which is over 100 ml, so 2 containers of about 57 ml. Face wash at 2 ml a day: 23 ml, 1 container. Sunscreen at 5 ml a day: 57.5 ml, 1 container. Body lotion at 6 ml a day: 69 ml, 1 container. Total 265 ml in 5 containers (264.5 ml before rounding), which fits a bag with 6 slots.
How it works
needed = days x amount per day x (1 + spare). Containers = needed / container limit, rounded up. The tool adds them up and compares the count with the slots you enter.
The 100 ml limit is per container, not per product: two 57 ml containers are allowed. What matters is the container size, not how full it is, so a half-full 200 ml bottle is still over the limit.
TSA says liquids, aerosols, gels, creams and pastes go in a quart-sized bag in containers of 3.4 ounces (100 milliliters) or less. CATSA says containers must be 100 ml/100 g (3.4 oz) or less and fit in one clear resealable bag of no more than 1 L. Rules and exemptions change and differ by country; check your airport and airline before you fly.
Every figure is arithmetic on numbers you type. No prices, sizes or amounts are assumed, and nothing is sent or stored.
Sources (opened 2026-10-08): TSA, Liquids, Aerosols, and Gels Rule; CATSA, Liquids, Non-solid Food & Personal Items. Daily amounts are your own measurements; the example rows are not recommended amounts.
FAQ
How much shampoo do I need for a week?
Multiply your daily amount by the number of days and add a spare margin. At 10 ml a day for 7 days with 15% spare, that is 80.5 ml, which fits one 100 ml container.
What is the carry-on limit for liquids?
TSA says containers of 3.4 ounces (100 milliliters) or less in a quart-sized bag. CATSA says 100 ml/100 g (3.4 oz) or less in one clear bag of no more than 1 L.
Can I bring more than 100 ml if I split it into smaller bottles?
The limit applies to each container, so several containers of 100 ml or less are allowed if they fit in the bag.
How do I find how much I use per day?
Weigh the bottle on a kitchen scale before and after a week of normal use, divide by 7, and enter that figure.
Does this tool cover the rules for every country?
No. It uses a container limit you can change. Check the rules of the airports you will pass through.