We got tired of calculators
designed to slow you down.
Most financial calculators online exist to collect your email before showing you a number. Neutenx exists to show you the number.
Why we built this
Every big financial decision — a mortgage, a loan, a retirement plan — comes down to a handful of numbers. Getting those numbers shouldn't require an account, a phone call, or a five-page lead form.
Neutenx started as a single mortgage calculator built to answer one question honestly: what will this actually cost me per month? It's grown into a full suite, but the rule hasn't changed — every tool works instantly, for free, before you ever create an account.
How we work
Every calculator uses the same formulas banks and lenders use internally — not simplified approximations. Where a number depends on your local tax rate or insurance cost, we say so instead of guessing.
We don't sell your data, and we don't require it to give you an answer. Accounts exist only for people who want to save results across visits.
What we optimize for
One clear number
Every result leads with the number that matters, then breaks down how we got there.
No friction
No signup wall before your first calculation. Ever.
Real math, stated assumptions
We show the formula and the assumptions, not just the output.
Have a calculator you wish existed?
Tell us what you're trying to figure out — we build new calculators based on what people actually ask for.
Get in touch →