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Congratulations, you just found the most random collection of calculators available on the Internet! Are you a hardcore geek? We’ll help you pick a motor for your drone. A travel junkie? Use our calculator to choose the optimal sunscreen SPF for holidays in Bali. A keen photographer? We’ll help you plan out a perfect star time lapse. A jeweler? You can’t go wrong with our diamond weight calculator. We have it all, from gardening to makeup to cargo shipping so long as there’s a formula for it. And if we don’t have it yet (and you think we should), drop us a line - we’ll create a calculator just for you!

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Welcome to the Christmas tree calculator, where you will find how to decorate your Christmas tree in the best way. Take a look at the perfect Christmas tree formula prepared by math professors and improved by physicists. Plan in advance how many lights and decorations you'll need!

Coffee kick

A long night of studying? Or maybe you're on a deadline? The coffee kick calculator will tell you when and how much caffeine you need to stay alert after not sleeping enough 😀☕ Check out the graph below!

Sectretary problem (Valentine's day)

Use the dating theory calculator to enhance your chances of picking the best lifetime partner.