Grab one of our cryptocurrency calculators and put it on your own website. These webmaster tools are totally free for you to use. You can customize the widget, including everything from the background color, button colors, results tab colors and more. Integration into your website is simple. Once you're done customizing, just hit the copy button below the pre-made iframe embed code, then paste it where you want it to appear on your website. It's responsive too, so it will work on mobile screens as well as desktop.