Yes, of course, there are a huge number of different smart calculators on the internet, with the help of which you can easily convert meaningful numbers in a few clicks, carrying both reliability and the need to convert a certain amount. I myself am in need of such calculators quite often, as my work requires it. And I can advise you one of the best options that I use myself, here is this sig fig conversion calculator https://www.calculator.io/significant-figures-calculator/.