Free online calculator

Scientific & basic calculator in your browser

Do everyday math and advanced calculations without installing an app. Switch between basic and scientific mode in one clean interface.

Free, no sign-up Keyboard support History for each mode Mobile, tablet & desktop

Keyboard shortcuts

  • Enter Calculate
  • Esc Clear
  • ⌫ Delete last
  • ^ Power
  • () Brackets
  • % Percent
Keyboard ready
History

    Your calculations will appear here

    History

      Your calculations will appear here

      Trig functions use radians. For degrees, multiply by π÷180.

      Guide

      What is this online scientific and basic calculator?

      This tool combines a simple four-function calculator and a scientific calculator in a single interface. Use it for quick totals and discounts, or for trigonometry, logarithms, powers and roots.

      How to use the calculator

      1. Select Basic or Scientific mode using the tabs above the calculator.
      2. Type numbers and operators with the on-screen buttons or your keyboard.
      3. Press equals to see the result. It's added to that mode's history automatically.
      4. Tap any line in the history to bring that result back and keep calculating.

      Tips for better results

      • Use brackets to control the order of operations in long expressions.
      • Reuse a result from history instead of retyping everything.
      • Use % for percentages: 150 × 20% gives 30.
      • On mobile, turn your phone sideways for more room on the scientific keypad.

      Examples you can try

      Basic

      20% off a price of 150

      150×80%

      Result: 120

      Basic

      Split a 2,450 bill between 4

      2450÷4

      Result: 612.5

      Scientific

      sin of 30 degrees

      sin(30×π÷180)

      Result: 0.5

      Scientific

      1,000 growing 5% a year for 3 years

      1000×1.05^3

      Result: 1157.625

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      FAQ

      Frequently asked questions

      What is an advanced online calculator?

      An advanced online calculator lets you do both basic arithmetic and scientific functions such as trigonometry, logarithms, powers and roots directly in your browser without installing any software.

      Is this calculator free to use?

      Yes, the LinksForEveryone online calculator is completely free to use. You can open the website from any device and start calculating without signup.

      What functions are available in the scientific calculator?

      The scientific calculator supports sin, cos, tan, percentage, brackets, powers, square root, natural logarithm and exponential functions, together with standard operators like plus, minus, multiply and divide.

      Can I use this calculator for everyday tasks?

      Yes. The basic calculator section is ideal for quick everyday tasks such as bill splitting, discounts, totals and simple homework, while the scientific side is there when you need more advanced math.