FinCalc is a free collection of 40 financial calculators covering personal finance, investing, business, and real estate — CAGR, EMI/loan, mortgage, DCF valuation, SIP, retirement/FIRE planning, tax estimation, debt payoff, and more. Everything runs entirely client-side in your browser. No signup, no paywall, no data collection — enter your numbers and get instant results, with a built-in guide and FAQ for each calculator. Built for anyone who wants quick answers without signing up to anything

👋 Hi Guys

I'm excited to share FinCalc—a free collection of 40+ financial calculators that run entirely in your browser with no signup required.

I built it because I was constantly switching between different calculator websites and spreadsheets whenever I needed to:

• Calculate CAGR and investment returns
• Project SIP growth
• Estimate mortgage and loan payments
• Run DCF valuations
• Plan retirement/FIRE
• Estimate taxes and much more

My goal was simple: put all these tools in one fast, privacy-friendly place.

I'd love your feedback:

Which calculator do you find most useful?
Which financial calculator is missing?
What would make FinCalc even better?

Thanks for checking it out! 😊

Genuinely curious how you keep this free without ads or any data harvesting, what is the actual catch here or is it just a passion project living off donations?