Free calculators that show their work
CalcRaven calculators give you the answer, the formula and every step in plain English, so you can check the math yourself.
Updated · Steps shown · Built and checked by AI, which can make mistakes
Built and checked by AI. AI builds and checks most of this site, including the calculators, explanations, rate research and testing. AI can make mistakes, so treat every result as an estimate and confirm anything important with an official source. How we use AI.
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- Pay & Work11 calculatorsUS · AU
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Featured calculators
- Texas Paycheck CalculatorUSTexas take-home pay after federal tax, Social Security and Medicare, for 2026.Pay & Work
- Net to Gross Paycheck CalculatorUSFind the salary or hourly rate you need to take home a set amount each paycheck, month or year.Pay & Work
- NSW Stamp Duty CalculatorAUNew South Wales stamp duty (transfer duty) for investors, home buyers and first home buyers, with the working shown.Property
- Mulch CalculatorUSMulch in cubic yards and bags from length, width and depth.Home & Garden
- Timesheet CalculatorAUAdd up a week of start and finish times, minus breaks, in hours and decimal hours, with overtime after 38 hours by default.Pay & Work
- Concrete CalculatorUSConcrete in cubic yards and bags from length, width and depth.Home & Garden
- Percentage CalculatorFour percentage calculators in one: X% of Y, what percent X is of Y, find the whole, and percentage change.Math
- 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.Money
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.