About Interest Calculator
Transparent, institutional-precision financial computing for everyday decisions
Founded with the belief that personal finance tools should be fast, private, and mathematically transparent, Interest Calculator provides modern, interactive financial calculators designed for real-world budgeting and wealth planning.
Our Core Principles
🔒 100% Privacy
No accounts required. All calculations run strictly in your browser and never touch external servers.
⚡ Instant Speed
Built on Astro with minimal JavaScript overhead for instantaneous page loads on desktop and mobile.
📊 Visual Clarity
Dynamic donut charts, area graphs, and full amortization schedules make financial concepts easy to grasp.
Calculation Accuracy & Methodology
Our algorithms strictly adhere to standardized formulas established in modern financial mathematics:
- Loans & Mortgages: Standard monthly reducing balance amortization.
- Mutual Fund SIPs: Compounded periodic growth annuity formulas.
- SWP Cashflows: Month-by-month deduction with ongoing interest accrual.
- Compound Growth: Configurable periodic compounding models from annual to daily.