Free calculators that show their work

Pay & Work

United States: paycheck calculators by state

• Florida Paycheck CalculatorUSFlorida take-home pay after federal tax, Social Security and Medicare, for 2026.
• Nevada Paycheck CalculatorUSNevada take-home pay after federal tax, Social Security and Medicare, for 2026.
• Tennessee Paycheck CalculatorUSTennessee take-home pay after federal tax, Social Security and Medicare, for 2026.
• Texas Paycheck CalculatorUSTexas take-home pay after federal tax, Social Security and Medicare, for 2026.
• Washington Paycheck CalculatorUSWashington take-home pay after federal tax, Social Security and Medicare plus state deductions, for 2026.

United States: pay and hours

• Net to Gross Paycheck CalculatorUSFind the salary or hourly rate you need to take home a set amount each paycheck, month or year.
• Time Card CalculatorUSAdd up a week of start and end times, minus breaks, in hours and minutes and decimal hours, with optional overtime pay. US overtime rules by default.
• US Overtime CalculatorUSOvertime and double-time pay for the week, plus how much may qualify for the 2025–2028 no-tax-on-overtime deduction.

Australia: hours and timesheets

• Timesheet CalculatorAUAdd up a week of start and finish times, minus breaks, in hours and decimal hours, with overtime after 38 hours by default.

All pay and work calculators

Money

United States: loans and debt

• Credit Card Payoff CalculatorUSHow long it takes to pay off a credit card, total interest, and the payment needed to be debt-free by a set date.
• HELOC CalculatorUSEstimate your home equity line of credit, the interest-only draw payment and the repayment payment that follows.

United States: savings and investing

• CD CalculatorUSInterest and ending balance for a certificate of deposit (CD), using the annual percentage yield (APY) or interest rate, with a growth schedule.
• Dividend CalculatorUSAnnual and monthly dividend income, dividend yield and a year-by-year dividend reinvestment (DRIP) projection.

All money calculators

Property

Australia: stamp duty

• NSW Stamp Duty CalculatorAUNew South Wales stamp duty (transfer duty) for investors, home buyers and first home buyers, with the working shown.
• QLD Stamp Duty CalculatorAUQueensland stamp duty (transfer duty) for investors, home buyers and first home buyers, with the working shown.
• VIC Stamp Duty CalculatorAUVictoria stamp duty (transfer duty) for investors, home buyers and first home buyers, with the working shown.

All property calculators

Math

Percentages

• Percentage CalculatorFour percentage calculators in one: X% of Y, what percent X is of Y, find the whole, and percentage change.

Averages

• Average CalculatorMean, median, mode and range of any list of numbers. Paste straight from a spreadsheet.
• Weighted Average CalculatorWeighted averages for grades, grade point average (GPA), prices and scores, with a step-by-step table.

Factors and multiples

• GCF CalculatorGreatest common factor of two or more numbers, with prime factorization and the Euclidean algorithm.

All math calculators

Why people use CalcRaven

• The steps, not just the answerEvery result comes with the formula and the steps, so you can follow it, learn it or double-check it.
• Dated and checkedPages that use tax or duty rates show when we last checked them against official sources.
• Plain EnglishEach answer is written as a sentence you can copy, plus a real-life example of what it means.
• Free and accessibleNo sign-up, designed for phones and computers, with light and dark modes and screen readers in mind.

How we check our calculators

Every calculator uses standard, published formulas and is tested against worked examples before it goes live. Read our methodology and editorial standards for the details, or contact us if you spot a problem.