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Do the math.

Free calculators for your money, your taxes, your health and your code. Answers update as you type, and every result shows how it was worked out.

  • 83 calculators
  • 9 languages
  • 0 numbers sent to a server
Degrees

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    Every calculator

    Finance

    12

    Loans, mortgages, investing, retirement and pay.

    All 12 tools

    Tax

    16

    Income tax and take-home pay in 16 countries.

    All 16 tools

    Health

    8

    Body weight, energy, pregnancy and what to eat.

    Math

    20

    Fractions, percentages, algebra, geometry and statistics.

    All 20 tools

    Everyday

    14

    Dates, time, school, travel, home and conversions.

    All 14 tools

    Developer

    13

    Everyday tools that run entirely in your browser.

    All 13 tools

    Your numbers stay with you.

    Every calculation runs in your browser, so nothing you type is sent to a server. And every answer shows how it was worked out, step by step.

    How we handle your data