I Built 4 Free Financial Calculators
Most finance calculators are wrapped in "lead gen" forms — enter your email to see results. Or they show the answer then hide it behind a paywall.
I built financalcai.com — four calculators, zero signups.
The Calculators
- Compound Interest — visualize how your money grows over time
- Loan Payment — see monthly payments and total interest
- Budget Planner — 50/30/20 rule with income breakdown
- Salary vs Inflation — what your salary is really worth
22 Finance Guides
Each calculator has companion guides covering dollar-cost averaging, FIRE movement basics, side hustle taxes, salary negotiation, and budgeting 101.
Tech
Vanilla JS, client-side calculations (no data sent anywhere), Cloudflare Pages hosting. Under 150KB total.
Check it out: financalcai.com
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