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How much sunscreen to use

The American Academy of Dermatology's guideline is about 1 oz (30 mL, a shot glass) for the whole body and about ¼ teaspoon for the face, reapplied about every 2 hours outdoors. A 150 mL bottle holds about 5 whole-body applications. Follow each product's directions.

How to use it

  1. Pick whole body or face.
  2. Enter the bottle size in mL.
  3. See how many applications it holds at the American Academy of Dermatology’s guideline amount.

More instruments

Glove sizeHat sizeShoe size from your footRing size for wide bandsDiamond size by caratRing sizeBracelet sizeSize converterNecklace lengthGold in plain numbersHoop earring sizeBirthstone by monthRug sizeRug pad sizePillow insert sizeThrow sizeGift pickerCost per wearSize across cutsBra and swim sizesKids’ sizesLaptop bag sizePower bank chargesTowel sizesJewelry in waterPrintable ring sizerPrice in your currencyCandle first burnBedding sizesOrder-by dateDuties by countryAll instruments

A general guide. Brands cut and finish differently, so each piece’s own size chart and details win.