Why the side-eye

I used to sell cars. I sat on the dealership side of the desk, and I watched good people agree to numbers they had never actually seen — because the payment sounded fine and the paperwork moved fast. Later I became a marketing analyst, which is a fancy way of saying I now stare at numbers until they confess.

SideEyeMath is those two jobs combined: calculators that itemize the numbers the way the finance office sees them, in the same format, before you are sitting in the chair. No accounts, no upsells, no advice-shaped sales pitch. Just the math, given the skeptical second look it deserves.

Questions or corrections? Every page shows its assumptions — if a rate or fee is out of date, tell us and we will fix it and stamp the page with the verification date.