How do I operate the calculator?

The result gives the minutes you can theoretically stay in the sun without getting sunburned.

How do I operate the calculator? For a correct result to calculate your personal protection time, you must first know your skin type. If you haven't done this yet, take this Test first.
→ First you have to know your skin type, take the test by clicking here first.
→ Choose your skin type (blue button). → The white buttons indicate the SPF (Sun Protection Factor) you find on your sunscreen. Press the corresponding button for your favourite sunscreen.
→ When you have clicked on your type and on the SPF button, press = to display the result IN MINUTES.
→ To make further calculations, press the red c and find your new solution.
→ The individual result is an approximate average. For each person there can be deviations, don't just rely on the outcome and protect yourself sufficiently.

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