About Estivator
Free calculators for everything that matters.
What We Do
Estivator is a free collection of online calculators for finance, health, math, time, and construction. Every tool is built to answer a specific question quickly and accurately — mortgage payments, BMI, loan amortization, take-home pay, and dozens more.
No signup. No popups. No fluff. Just calculators that work.
Why We Built It
Most calculator sites are cluttered with ads, forced signups, and vague answers. We wanted something better: fast, accurate, and honest about what it can and can't do.
Every calculator on this site shows its work — the formula behind the result, the assumptions it makes, and the context that helps you interpret the numbers. That way you're not just getting an answer — you're understanding it.
How It Works
Each calculator is built on a shared engine that handles the math. The interface, styling, and result formatting are consistent across the entire site, so once you've used one calculator, you know how to use them all.
We update calculations when laws, rates, or standards change. All figures are estimates and should be verified before making major financial or medical decisions.
Contact
Questions, corrections, or suggestions? Get in touch →