I'm Travel-Lars. That name is a pseudonym, I'm Norwegian, and I built the calculators on this site for my own planning first.
I started out in an office job. Travelling changed that. Somewhere in Southeast Asia I stopped measuring my life against someone else's definition of success, and I have been working toward financial independence ever since. Living on less is how I am doing it.
The calculators are public because other people in the FIRE community are working out the same numbers I am. I have not reached my own number yet, so they are built by someone who is still using them.
Why trust these tools when you can't look me up? Because the math is open. Every calculator runs entirely in your browser, nothing on the site is sponsored, and every data source, formula and default assumption is written down in full on the methodology page, limitations included.