We proudly present the collection of the most unique, crazy, knock-your-socks-off calculators on the Web! Here, you can discover Omni Calculator in its full glory, and get the full perspective on what we do and why. Trying to relax? Grab a sweet tea prepared with our chilled drink calculator, or lift up in the air on helium balloons. Hungry? We have the best cooking calculators, from boiling eggs to getting pizza. In a more serious mood? Check how dangerous a car crash can be depending on different factors, or how many years of life you can save by picking a bike over a car. Feeling like starting a DIY project? We suggest sewing a circle skirt. We’re here to do the math for you, so dive in and enjoy!
In this smartphone projector calculator, you will learn how to make your very own DIY smartphone projector with a shoebox and a magnifying glass. Experiment with it and learn how to find the focal length of your magnifying glass' lens.