Wanjaaro is a free suite of 70+ browser-based financial calculators for growth, retirement, mortgage, debt, tax, budgeting, investing. Every calculation runs locally, nothing touches a server. No signup, no ads blocking your math, just instant answers.

Hey Product Hunt 👋 I built Wanjaaro because every time I needed a specific calculator — Coast FIRE, a debt avalanche comparison, a mortgage points break-even — I'd end up on a site plastered with ads, forced to sign up, or missing the exact scenario I needed. So I built 70+ calculators covering growth, retirement, mortgages, debt, insurance, tax, budgeting, and investing — all in one consistent, fast interface. Everything runs 100% in your browser. No server ever sees your numbers. A few things I'm proud of: Niche tools most sites skip (Kelly Criterion, Coast FIRE, CD Ladder, Backdoor Roth IRA) Every calculator has history, CSV/Excel export, and shareable links Fully responsive, dark mode, zero tracking of your inputs Would love your feedback — especially which calculator you use most, and what's missing. Building the next batch based on what this community asks for.

Finally a calculator site that loads fast and doesn't make me click through five ads to find a loan payoff number. Liked that the mortgage tool let me tweak extra payments without reloading anything.

honestly the privacy angle of everything running locally is really nice. one thing that would help me though is a way to save or bookmark my inputs, like maybe a quick "last used" row on the homepage so I don't have to retype my numbers every time I open a different calculator

love that everything runs locally and there's no signup nonsense blocking you from just doing the math

Finally a calculator site that loads fast and doesn't make me click through five ads to find a loan payoff number. Liked that the mortgage tool let me tweak extra payments without reloading anything.

love that everything runs locally and there's no signup nonsense blocking you from just doing the math

Wanjaaro — Free Financial Calculators

70+ free financial calculators. No signup, all local.

70+ free financial calculators. No signup, all local.