Interest Calculator
Calculate simple interest, compound interest (with compounding frequency), and monthly loan payments with year-by-year schedules.
Complete User Guide
Simple Interest: I = P×r×t. Compound Interest: A = P(1+r/n)^(nt) — choose compounding frequency (daily/monthly/quarterly/annually). Loan Payment: monthly amortization formula.
The Mathematical Formula
Compound: A = P(1 + r/n)^(nt)
Simple: I = Prt. Compound: A = P(1+r/n)^(nt). Loan: M = P[r(1+r)^n]/[(1+r)^n-1] where r=monthly rate, n=total months.
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