All Calculators
44 free calculators across 11 categories.
Mortgage Payment
Calculate your monthly mortgage payment including principal, interest, taxes, insurance, and PMI.
Amortization
View your complete mortgage amortization schedule showing how each payment is split between principal and interest.
Refinance
Determine if refinancing your mortgage makes sense by comparing costs, savings, and break-even timeline.
Affordability
Find out how much house you can afford based on your income, debts, down payment, and interest rates.
Loan Payment
Calculate monthly payments for any type of loan including auto, personal, and student loans.
Auto Loan
Calculate monthly car payments, total interest, and payoff timeline for your auto loan.
Student Loan
Estimate student loan payments and total cost across different repayment plans.
Loan Payoff Accelerator
See exactly how extra payments, bi-weekly payments, or lump sums accelerate your loan payoff and save interest.
Compound Interest
See how your money grows over time with compound interest, recurring contributions, and optional inflation adjustment.
Debt Payoff
Compare avalanche and snowball debt payoff strategies with detailed timelines.
Investment Return
Calculate total and annualized returns on your investments.
Savings Goal
Calculate how much you need to save monthly to reach your financial goal.
Budget
Create a simple budget and see your savings rate, spending breakdown, and recommendations.
Retirement
Estimate how much you need to save for a comfortable retirement.
Dividend Yield
Calculate dividend yield, annual income, and compare dividend-paying investments.
Retirement Projection
Advanced retirement planner with Social Security estimates, inflation-adjusted projections, and withdrawal strategy analysis using the 4% rule.
Investment Comparison
Compare two investment scenarios side-by-side with different rates, contributions, and time horizons to find the optimal strategy.
Opportunity Cost
Calculate the true cost of any financial decision by comparing it against investing that money instead.
Income Tax
Estimate your federal income tax with 2024 brackets, deductions, and effective rate.
Self-Employment Tax
Estimate self-employment tax including Social Security, Medicare, and quarterly payments.
Take-Home Pay
Calculate your net pay after federal tax, state tax, Social Security, Medicare, and other deductions.
Break-Even
Calculate the number of units you need to sell to cover your fixed and variable costs.
Profit Margin
Calculate profit margin and markup percentage from revenue and cost.
ROI
Calculate return on investment and annualized ROI for any investment.
Productivity ROI
Calculate the financial return on investing in skills, tools, education, and productivity improvements. Perfect companion to SkillFocusLab.
Tip
Calculate tip amounts and split bills between multiple people.
Percentage
Calculate percentages, percentage changes, and "what percent" questions.
Discount
Calculate the final price after one or two discounts are applied.
Sales Tax
Calculate sales tax on purchases or extract the tax from a total price.
Quadratic Equation
Solve quadratic equations (ax² + bx + c = 0) and find real or complex roots using the quadratic formula.
Fraction
Add, subtract, multiply, and divide fractions with step-by-step simplification.
Scientific Notation
Convert numbers to and from scientific notation. Perform arithmetic with scientific notation values.
Statistics
Calculate mean, median, mode, range, variance, and standard deviation for any dataset.
Exponent
Calculate powers, roots, and exponent expressions. Supports fractional and negative exponents.
Logarithm
Calculate logarithms in any base including natural log (ln), common log (log₁₀), and binary log (log₂).