calcufly-finance

Professional finance calculator functions for Node.js. Mortgage, loan, investment, retirement, tax, ROI and more.

Part of the CalcuFly calculator suite — 600+ free online calculators.

Installation

npm install calcufly-finance

Quick Start

const finance = require('calcufly-finance');

// Mortgage calculation
const mortgage = finance.mortgage(300000, 6.5, 30);
console.log(mortgage.monthlyPayment); // 1896.20

// Compound interest
const growth = finance.compoundInterest(10000, 7, 10);
console.log(growth.futureValue); // 20096.61

// ROI
const roi = finance.roi(5000, 7500);
console.log(roi.roiPercent); // 50%

API Reference

| Function | Description | |----------|-------------| | mortgage(principal, rate, years) | Monthly mortgage payment | | compoundInterest(principal, rate, years, n) | Compound interest growth | | simpleInterest(principal, rate, years) | Simple interest | | loanPayment(principal, rate, years) | Loan monthly payment | | amortizationSchedule(principal, rate, years) | Full amortization table | | roi(initial, final) | Return on investment | | profitMargin(revenue, cost) | Gross profit margin | | breakEven(fixed, price, cost) | Break-even analysis | | futureValue(pv, rate, years) | Future value of money | | presentValue(fv, rate, years) | Present value of money | | ruleOf72(rate) | Years to double investment | | retirementSavings(...) | Retirement planning | | fireNumber(expenses, rate) | FIRE movement target | | tipCalculator(bill, tipPct, people) | Tip splitting | | discountPrice(price, pct) | Discount calculation | | inflationAdjust(amount, rate, years) | Inflation adjustment | | depreciationStraightLine(cost, salvage, life) | Depreciation schedule |

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License

MIT — CalcuFly