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@toolsnap/compound-interest-calc

v1.0.0

Published

Free online Compound Interest Calculator. Calculate compound interest with different compounding frequencies, contributions, and inflation adjustment.

Vulnerabilities

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Links

Git

Maintainers

lwhittmylwhittmy

Keywords

compound interestcalculatorinvestmentsavingsfinanceinterest rateAPYgrowth

Readme

Compound Interest Calculator

Free online Compound Interest Calculator — calculate compound interest with different compounding frequencies, monthly contributions, and year-by-year breakdowns.

Installation

npm install @toolsnap/compound-interest-calculator

Usage

const { compoundInterest, withMonthlyContribution, effectiveAnnualRate } = require('@toolsnap/compound-interest-calculator');

// Basic compound interest: $10,000 at 5% for 10 years, compounded monthly
const result = compoundInterest(10000, 0.05, 10, 12);
console.log(result);
// { amount: 16470.09, interest: 6470.09 }

// With monthly contributions: $5,000 initial + $200/month at 7% for 20 years
const savings = withMonthlyContribution(5000, 200, 0.07, 20);
console.log(savings);
// { totalDeposited: 53000, interestEarned: 74292.34, finalAmount: 127292.34 }

// Effective Annual Rate
const ear = effectiveAnnualRate(0.05, 365);
console.log(ear); // 0.05127...

API

compoundInterest(principal, rate, time, frequency)

Calculate compound interest on a principal amount.

withMonthlyContribution(principal, monthly, rate, years)

Calculate growth with regular monthly contributions added.

effectiveAnnualRate(nominalRate, frequency)

Convert nominal rate to effective annual rate.

amortizationTable(principal, rate, years, frequency)

Get year-by-year breakdown of balance and interest.

Related Tools

License

MIT