TSA 3-1-1 Liquids Rule Checker
Type your bottle size and see if it can go in your carry-on. Then check which everyday items count as liquids.
Bottle size converter
3.40 fl oz = 101 mL
✓ OK for your carry-on quart bag.
The limit is about the bottle size printed on the label, not how much is left inside.
The 3-1-1 rule in 10 seconds
- 3 — each container 3.4 oz (100 mL) or less
- 1 — all of them fit in one clear quart-size (about 1 liter) bag
- 1 — one bag per passenger
Applies to carry-on bags at US airports. Checked bags have no 3-1-1 limit (other rules still apply).
Does it count as a liquid?
Counts · Toothpaste
Counts as a gel. Travel size goes in your quart bag.
Counts · Shampoo & conditioner
3.4 oz / 100 mL or less per bottle.
Counts · Aerosol deodorant / hairspray
Counts. Stick deodorant does not.
Counts · Hand sanitizer
Counts toward the 3-1-1 rule in carry-on.
Counts · Peanut butter & spreads
TSA treats spreads like liquids.
Counts · Makeup: mascara, liquid foundation, lip gloss
Counts. Powder and lipstick sticks don't.
Exempt / OK · Solid shampoo bars, stick deodorant
Solids are fine outside the bag.
Exempt / OK · Medication (liquid)
Exempt in reasonable amounts — tell the officer at screening.
Exempt / OK · Baby formula, breast milk, juice for kids
Exempt in reasonable amounts — declare it at screening.
Exempt / OK · Empty water bottle
Fine. Fill it after security.
Quick tips
- Pull your quart bag out (unless your airport's scanners say otherwise) to speed up screening.
- Buy drinks and big toiletries after security or at your destination.
- Rules can change and the final call is the TSA officer's. Check tsa.gov before you fly.
Not sure about something else? Try the Can I Bring It? checker, see carry-on size limits, or grab travel-size bottles on Travel Extras.