Funny, almost at the same time I published a similar tool on github. https://github.com/SimonWaldherr/liveCalc https://github.com/SimonWaldherr/liveCalc Mine is

Funny, almost at the same time I published a similar tool on github. https://github.com/SimonWaldherr/liveCalc https://github.com/SimonWaldherr/liveCalc Mine is released under the MIT license and is mostly based on math.js. Suggestions for improvement and pull requests are very welcome.