This emulator is supplied as is. Use it at your own risk! Always double-check important calculations by other means.
Also, try our versions for Android, iPhone and iPad.
There are some key bindings that make the emulator easier to use in typical usage. Make sure the calculator is in focus (by clicking it) so it can receive the keystrokes.
All rights reserved. It is forbidden to copy this calculator to other sites. Write me if you have any doubts.