35+ free US calculators
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Popular calculators
Rent vs. Buy Calculator
Compares total cost of renting vs. buying over a fixed number of years.
View calculatorIRA Calculator
Projected IRA balance at retirement from contributions and growth.
View calculatorCapital Gains Tax Calculator
Long-term capital gains tax based on your other taxable income.
View calculatorSelf-Employment Tax Calculator
Social Security and Medicare tax owed on self-employment net profit.
View calculatorBonus Tax Calculator
Estimated withholding on a bonus using the IRS flat 22% method.
View calculatorTax Bracket Calculator
See exactly how much of your income falls into each federal tax bracket.
View calculatorSWP Calculator
How long a lump sum lasts under a fixed monthly withdrawal.
View calculatorFIRE Number Calculator
The savings target and years needed to reach financial independence.
View calculatorCAGR Calculator
Compound annual growth rate between a beginning and ending value.
View calculatorMortgage Calculator
Monthly Payment
$2,102.17
- Loan amount
- $320,000
- Down payment
- $80,000
- Total interest
- $436,782
- Total payment
- $756,782
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Clear answers, every time
My US Calculator provides free, accurate calculators for everyday financial and life decisions. Each calculator shows its formula, its assumptions and a worked example — not just a final number.
Frequently asked questions
Are these calculators accurate?
Yes. Every calculator uses the documented formula for that calculation, with assumptions shown clearly on the page — nothing is a black box.
Do I need an account to use them?
No. Every calculator is free to use with no sign-up required.
Are my calculation inputs stored?
No. Calculations run in your browser, and we don't store your financial inputs unless a feature explicitly requires it.