FinCalc API – 8 financial calculator endpoints for developers

Summary: FinCalc API provides 8 REST endpoints for common financial calculations, returning structured JSON with inputs as query parameters. It is stateless, fast, and designed to simplify implementing financial math in applications.

What it does

It offers endpoints for Amortization, Mortgage, Compound Interest, ROI, NPV, IRR, Break-Even, and Depreciation calculations, delivering sub-50ms responses without storing data.

Who it's for

Developers needing reliable, production-ready financial math functions across projects.

Why it matters

It eliminates repetitive implementation of complex financial formulas, ensuring accurate and efficient calculations.