Fourth edition spell level calculator

Hello everybody! I started playing Ars Magica 4th a few weeks ago. I really like the system, being able to put numbers to so many spells.
But, it was a bit tedious by hand, so I put together a tiny tool to help me.

You can use it live at:
You can check the code at

Some things are in spanish, since that's how I play, others are in english, since it was easier to copy and paste from the pdf than using my spanish manual.

I don't plan to improve it, translate it, nor implement 5th edition, since it works for me and my group as it is.

Feel free to fork and modify it to your liking.

Leave a comment if you find it useful. Maybe I can do more if there's interest.