Financial Calculators
Bill Splitter Calculator
Split any bill evenly among friends. Enter the total, tip percentage, and number of people to instantly see each person's share including tip. Handles uneven splits too. Free, no sign-up.
Break-Even Calculator
Calculate your business break-even point in units sold and total revenue. Enter fixed costs, variable costs per unit, and selling price to see when you'll start making a profit. Free and instant.
Compound Interest Calculator
Calculate compound interest with optional monthly contributions. See your final balance, total interest earned, and a year-by-year growth breakdown. Free online calculator.
Credit Card Payoff Calculator
Find out exactly when your credit card will be paid off and how much interest you'll pay. Enter your balance, interest rate, and monthly payment to get a full payoff timeline. Free, no sign-up.
Debt Snowball Calculator
Calculate your debt payoff schedule using the snowball method (smallest balance first) or the avalanche method (highest interest first). See total interest paid and your debt-free date. Free, private, browser-based.
Emergency Fund Calculator
Calculate how much you need in an emergency fund and how long it will take to save it. Enter your monthly expenses, desired coverage (3–12 months), and current savings. Free, instant, browser-based financial calculator.
Inflation Calculator
Calculate how inflation has changed the value of money from 1913 to 2026 using US CPI data. Find out what $100 in 1990 is worth today, or how much buying power you've lost. Free, instant, browser-based.
Investment Return Calculator
Calculate investment ROI, CAGR (compound annual growth rate), or compound growth with a year-by-year table. Free browser-based tool for stocks, real estate, savings, and any investment.
Mortgage Points Calculator
Calculate whether mortgage points are worth buying. Compare upfront point cost, monthly payment savings, and break-even timeline.
Net Worth Calculator
Calculate your net worth by entering your assets and liabilities. Includes cash, investments, real estate, vehicles, and all debt categories. Free, private, entirely browser-based.
Pay Raise Calculator
Calculate your salary raise amount by percentage or dollar increase. See old pay, new pay, annual impact, and monthly difference instantly.
Profit Margin Calculator
Calculate gross profit margin, net profit margin, markup percentage, and target selling price from cost and revenue. Works in reverse to find required revenue or cost from a desired margin. Free and instant.
Retirement Calculator
Calculate how much you need to save for retirement. Plan your retirement with this free calculator. Estimate retirement income and savings needed.
Retirement Savings Calculator
Calculate how much you need to save for retirement. Enter your age, savings, monthly contributions, and target retirement age to see projected nest egg and monthly income.
Salary to Hourly Calculator
Convert any annual salary to an hourly rate, or an hourly wage to an annual salary. Adjust for actual work hours, vacation days, and paid time off to get your true effective hourly rate. Free and instant.
Savings Goal Calculator
Calculate how long it takes to reach a savings goal, or how much you need to save each month to hit your target. Includes interest/investment return and starting balance. Free online savings calculator.
Student Loan Payoff Calculator
Calculate your student loan payoff date, total interest paid, and see a full amortization schedule. Works for federal and private student loans. Free, no signup, runs in your browser.
Tip Calculator
Calculate tip amount instantly. Enter your bill total, choose a tip percentage, and split between any number of people. See tip per person and total per person.
Unit Price Calculator
Compare products by true unit cost. Enter price and quantity to calculate cost per unit and find the best grocery or household value.
US Tax Bracket Calculator
Estimate your 2024 US federal income tax. Enter your income and filing status to see your marginal bracket, effective rate, and a full tax breakdown by bracket. Free browser-based tool.
About These Financial Calculators
These free financial calculators help you make smarter decisions with your money — whether you're planning for retirement, figuring out how much a restaurant tip should be, or watching a savings account grow through compound interest.
All calculators run entirely in your browser. Nothing you enter is sent to a server or stored anywhere.
Tools in This Category
- Compound Interest Calculator — See how a lump sum and regular contributions grow over time, with a year-by-year balance table
- Retirement Savings Calculator — Project your nest egg at retirement, see the inflation-adjusted value, and estimate monthly income using the 4% rule
- Tip Calculator — Calculate tip amount and split the bill between any number of people
Why Financial Planning Matters
Small decisions compounded over time have an outsized impact on long-term financial health. A $200/month contribution started at age 25 grows to roughly twice what the same contribution started at 35 would produce — purely from the extra decade of compounding. These tools are designed to make those numbers concrete and actionable.
How to Use These Calculators
Each calculator is designed to answer one specific question. For best results:
- Use conservative return rate assumptions for long-term projections (7% nominal for a diversified stock index is a common benchmark)
- Account for inflation — the calculators that include an inflation input will show results in today's purchasing power
- Remember that taxes and fees are not included in most projections; adjust your effective return rate downward to compensate in taxable accounts