Free Investment & Finance Calculators — ROI, Retirement, Debt Payoff & More
Investment and personal finance calculators to help you plan, save, and grow your money. No signup required.
Investment ROI Calculator
Calculate return on investment (ROI) and CAGR for any investment. Shows total profit or loss, annualized return, and growth multiplier. Supports USD, GBP, AUD, EUR. Free, no signup.
Use Tool →DRIP Calculator
See how reinvesting dividends grows your portfolio over 1–50 years. Includes price appreciation, annual contributions, and a year-by-year growth table. Free dividend reinvestment calculator, no signup.
Use Tool →FIRE Retirement Calculator
Calculate your FIRE number and retirement timeline using the 4% withdrawal rule. Shows projected savings, years covered, and monthly savings needed. Free retirement calculator, no signup.
Use Tool →Credit Card Payoff Calculator
Calculate how long to pay off credit card debt and total interest paid. Shows year-by-year breakdown and warns if your payment barely covers interest. Free debt payoff calculator, no signup.
Use Tool →401(k) Contribution Calculator
Estimate your 401k balance at retirement including employer matching. Shows annual contributions, employer match, projected balance, and estimated tax savings. Free, no signup.
Use Tool →Email Signature Generator
Create a professional HTML email signature in seconds. Choose a color theme, add social links, upload a logo, and copy the HTML for Gmail, Outlook, or Apple Mail. Free, no signup.
Use Tool →DTI Calculator
Calculate your debt-to-income ratio for mortgage qualification. Shows front-end and back-end DTI with color-coded results. Free, no signup.
Use Tool →Rule of 72 Calculator
Calculate how long to double your investment using the Rule of 72. Shows years to triple and 10x. Includes comparison table for different rates. Free, no signup.
Use Tool →Emergency Fund Calculator
Calculate your emergency fund target and how long to reach it. Based on monthly expenses and saving capacity. Free, no signup.
Use Tool →Savings Goal Calculator
Calculate how long to reach any savings goal with monthly contributions and interest. Shows target date and total interest earned. Free, no signup.
Use Tool →Overtime Pay Calculator
Calculate regular and overtime pay at 1.5x or 2x rate. Shows total pay, effective hourly rate, and annual equivalent. Free, no signup.
Use Tool →Solar Panel ROI Calculator
Calculate solar panel payback period and 25-year ROI for any US state. Includes 30% federal tax credit, state incentives, CO2 offset, and annual savings. Free, no signup.
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