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Beauty calculators
Quick, honest answers to the questions we get asked most — how long your nails and hair take to grow, and exactly how much sunscreen you should be using. Free, instant, and no sign-up.
Nail growth calculator
How many months to reach your goal nail length — fingernails or toenails.
Calculate →Hair growth calculator
Time to your goal length, with your trim schedule factored in.
Calculate →Sunscreen calculator
Exactly how much SPF you need today — and how long a bottle lasts.
Calculate →These calculators use published average growth rates and the standard sunscreen application guidance. They are for general education, not medical advice — see our disclaimer.
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