Financial calculators help you plan, compare, and make sense of money decisions — from loans and mortgages to savings, interest, taxes, and investment returns. Each tool turns a formula into a simple form: enter your numbers and get an instant, clearly explained result.
Browse the most-used financial calculators below, or open the Trending tab to see what's gaining attention this week. Every calculator is free, works on any device, and shows the method behind the answer.
- Tax Calculator
- Loan Calculator
- Interest Calculator
- Margin Calculator
- Salary Calculator
- Savings Calculator
- Payment Calculator
- Income Calculator
- Inflation Calculator
- Credit Card Calculator
- Deposit Calculator
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Vietnam Household Business Tax CalculatorEstimate VAT and personal income tax for a Vietnamese household business under Decree 141/2026 and 253/2026 across four revenue bands.
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Net Paycheck Calculator by StateEstimate US state income tax with flat-rate, progressive bracket, or no-tax options. See your state tax, net income, and effective rate instantly.
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Pay Period to Annual Salary CalculatorFind how many paychecks you get per year by pay frequency (weekly, bi-weekly, semi-monthly, monthly) and your gross pay per check.
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Discount Factor (Present Value of $1) Table CreatorCalculate your fixed monthly mortgage payment, total interest, and full amortization breakdown from loan amount, interest rate, and term.
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Savings Account vs CD CalculatorCalculate your Certificate of Deposit's value at maturity, total interest earned, and effective APY using compound interest. Free CD vs savings calculator.
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Time to Reach $1 Million Savings CalculatorCalculate how many months and years it takes to reach a savings goal with fixed monthly contributions and compound interest. Free savings goal time calculator.
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Gross Monthly Income from Hourly Wage CalculatorConvert an hourly wage into annual, monthly, weekly and daily gross income using your hours per day, days per week and weeks per year.
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Tax Deduction Savings Calculator: Marginal vs. Effective RateEstimate how much tax a deduction actually saves you. Multiply your deduction by your marginal tax rate to see real savings and net cost.
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Salary Cap Percentage Calculator — Max Housing Cost as a % of Salary (28% Rule)Estimate your maximum affordable monthly housing cost from your annual salary using the 28% rule. Adjust the ratio and see monthly and annual limits.
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NFT Gas Fee Calculator (Ethereum Minting & Transactions)Calculate Ethereum gas fees in USD and ETH from gas units, gas price in Gwei, and the current ETH price. Free, fast transaction cost estimator.
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Pass-Through Entity Tax Savings Calculator (S-Corp Salary vs Distribution)Estimate the self-employment tax you save with an S-Corp election (US). Compare reasonable salary vs distributions and the 15.3% SE tax avoided.
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Inflation-Adjusted Gift Savings Calculator (Future Cost)Calculate what today's price will cost in the future after inflation. Enter a current price, inflation rate, and years to see the future dollar amount.
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Compound Interest CalculatorEnter principal, annual rate, years, and compounding (annual to daily) to get final amount and total interest earned—plan your savings growth.
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Profit Margin CalculatorProfit Margin Calculator - Calculate your profit margin by inputting revenue and costs. Instantly see your profit margin, total profit, and profit percentage to assess financial performance and profitability.
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Debt-to-Income (DTI) Ratio CalculatorCalculate your debt-to-income (DTI) ratio instantly. Enter your monthly debt payments and gross income to see the percentage lenders use to assess you.
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Prorated Salary CalculatorCalculate prorated salary for a partial pay period. Enter annual salary, days worked, and total work days to get exact partial pay.
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Tax Bracket Calculator (US)Estimate your 2026 US federal income tax by bracket. Get total tax, marginal & effective tax rates, and after-tax income for single or married filers.
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Mortgage Points CalculatorCalculate the cost of mortgage discount points, your monthly savings, and the break-even point in months for US fixed-rate mortgages.
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Return on Sales CalculatorCalculate Return on Sales (ROS) instantly. Enter operating profit and net sales to find your operating margin percentage and measure profitability.
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Annual Income CalculatorConvert your hourly wage into yearly, monthly, and weekly income. Free annual income calculator using hours per week and weeks worked per year.
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Effective Annual Rate (EAR) CalculatorCalculate the Effective Annual Rate (EAR) from a nominal rate and compounding frequency. See the true yearly interest cost or yield with EAR = (1 + i/n)^n − 1.
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Mortgage Refinance CalculatorCompare your current mortgage to a refinance. Calculate new monthly payment, monthly savings, and the break-even point on closing costs.
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Rent or Buy CalculatorCompare the true cost of renting vs buying a home over your time horizon — mortgage, taxes, maintenance, equity and appreciation included.
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Present Value of Annuity CalculatorCompute the present value of ordinary, due, and growing annuities with custom compounding and payment frequency. Free online PV of annuity calculator.
Frequently asked questions
What can I use a financial calculator for?
Financial calculators cover everyday money tasks such as loan and mortgage payments, interest and APR, savings growth, inflation, currency, tax estimates, and investment returns. Pick the tool that matches your question and enter your figures for an instant result.
Are these financial calculators free to use?
Yes. Every calculator in this category is free, needs no sign-up, and works on both desktop and mobile.
How accurate are the results?
Each calculator uses standard financial formulas and is tested against published reference values. Results are estimates for planning and education — for major decisions, confirm the figures with your bank, lender, or a licensed financial professional.
Do you store the numbers I enter?
No. Calculations run in your browser, and your inputs are not logged, saved, or shared.
Which financial calculators are most popular?
The list on this page is ordered by how often each tool is used, so the most popular calculators appear first. Open the Trending tab to see what is rising this week, or Recently added and Last updated for the newest tools.
