Scientific Calculator
A full scientific calculator in your browser: trigonometry in degrees or radians, logs, powers, roots, factorials, keyboard support and history.
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How to use Scientific Calculator
- 1
Open Scientific Calculator on this page. It loads right in your browser.
- 2
Add your file, text or values and adjust the settings.
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Copy the result or download it. Nothing is uploaded or stored.
How to use it: Scientific Calculator
This scientific calculator handles everything from everyday sums to trigonometry and logarithms. Type a whole expression like 2π × 3² ÷ 4 or sin(30) + log(100) and the answer appears as you type; press = to keep it and add it to the history.
It understands operator precedence and brackets, implicit multiplication such as 2π or 3(4+1), percentages, factorials (even of decimals), and the last answer as Ans. Switch between degrees and radians with one tap and use your keyboard for fast entry.
How to use it
- Type with the on-screen keys or your keyboard (numbers, + − × ÷ ^ ( ) ! %).
- Use the function keys for sin, cos, tan, their inverses, ln, log, √, ∛, eˣ and 10ˣ.
- Choose DEG or RAD for trigonometry.
- Press = or Enter; click a history entry to reuse it.
How it is calculated
Expressions follow the usual order of operations: brackets, then powers (evaluated right to left, so 2^3^2 = 512), then multiplication and division, then addition and subtraction. −2² is −4, as in standard mathematics.
Worked example
sin(30) in degree mode returns 0.5; switch to RAD and sin(π/2) returns 1. log(1000) is 3, ln(e²) is 2, 5! is 120 and √(16) + ∛(27) is 7. Typing 2(3+4)² gives 98, because the bracket is squared before multiplying.
Who uses it
- Students doing algebra, trigonometry and physics homework
- Engineers and technicians checking quick calculations
- Exam practice when a physical calculator is not at hand
- Anyone who needs more than a basic phone calculator
Tips
- Check DEG/RAD before trig calculations: it is the most common source of wrong answers.
- Use Ans to chain calculations without retyping the previous result.
- Close brackets explicitly for clarity; missing closing brackets are added automatically at the end.
Free, private and instant: every calculation runs in your browser, nothing is uploaded or stored, and there is no sign-up or limit. Related calculators: fraction calculator, percentage calculator, grade calculator.
Features
- Trig, inverse trig and hyperbolic functions
- Degrees and radians
- Logs, powers, roots and factorials
- Implicit multiplication and Ans
- Keyboard input and calculation history
Frequently asked questions
How do I use degrees instead of radians?
Tap DEG above the keypad. sin(90) then returns 1; in RAD mode use sin(π/2) for the same result.
How do I calculate a power or a root?
Use xʸ (or ^) for powers, x² for squares, √ for square roots and ∛ for cube roots. For other roots raise to a fraction, e.g. 32^(1/5) = 2.
What is the difference between log and ln?
log is the base-10 logarithm (log 100 = 2); ln is the natural logarithm with base e (ln e = 1).
Can I type with my keyboard?
Yes. Numbers and + − * / ^ ( ) ! % work directly; Enter calculates, Backspace deletes and Esc clears.
Is it accurate?
Results are computed in double precision and rounded to 14 significant digits, removing floating-point noise such as sin(180°) = 1.2e-16.
Is this calculator free and private?
Yes. It is completely free, needs no account and runs entirely in your browser, so the numbers you type are never sent to a server or stored.