Calculators

Every calculator on this site is built to give you a clear answer in seconds , without a spreadsheet or a finance degree. Enter the numbers that apply to your situation and the results update instantly. If you are not sure what a field means, short labels explain each input. Most calculators also include a plain-English summary of what the numbers mean and why they matter for your decision.

These tools are designed around real everyday decisions. Whether you are comparing two loan offers, checking how much you need to save each month to hit a goal, or trying to understand what a 7% annual return looks like over 20 years , each calculator is built around a practical use case, not a textbook formula. All tools are free and require no account or signup.

Finance & investing tools

The investing calculators cover compound interest, dollar cost averaging, dividend yield, inflation-adjusted value, present value, and APY. These are the core building blocks of long-term wealth planning. Use the compound interest calculator to project a savings or investment account over time, then use the present value calculator to understand what a future lump sum is worth in today's dollars. The rule of 72 gives you a quick mental shortcut for estimating doubling time.

Mortgage & loan calculators

The loan calculators help you understand the true cost of borrowing. The mortgage calculator shows your monthly payment and total interest over the life of the loan. The loan APR calculator factors in origination fees so you can compare offers on an equal footing. The amortization calculator builds a full payment schedule, showing exactly how each payment is split between principal and interest every month.

Budget & savings calculators

The budgeting tools help you plan for both short and long-term financial goals. The 50/30/20 budget calculator splits your income into needs, wants, and savings targets. The savings goal calculator tells you exactly how much to set aside each month to hit a target amount by a specific deadline. The emergency fund calculator shows how long it will take to build a three to six month safety net based on your essential monthly costs.

Tax & income calculators

The tax and income tools help you understand what you earn and what you owe. The US paycheck calculator estimates take-home pay after federal taxes, Social Security, and Medicare. The capital gains tax calculator shows estimated tax on investment profits at both short-term and long-term rates. The sales tax calculator quickly adds or removes tax from any price , useful for shopping, invoicing, or business pricing decisions.