Scientific Calculator
Full scientific calculator.
Full scientific calculator.
How to use Scientific Calculator
- Enter an expression with the button pad or your keyboard
- Toggle Deg or Rad to control how angles are read
- Read the parsed result for powers, roots, logs, or trig
About Scientific Calculator
This scientific calculator runs entirely in your browser and handles everything a standard non-graphing model does. Enter expressions with the on-screen button pad or straight from your keyboard to get instant results for arithmetic, powers (x^y and x squared), square roots, factorials, natural and base-10 logarithms, and the trig functions sine, cosine and tangent, along with the constants pi and e. A Deg/Rad toggle sets whether angles are read as degrees or radians, so sin(30) can mean 0.5 or the radian value depending on the mode you pick.
Every expression is read by a safe, built-in math engine rather than risky code evaluation, so a missing parenthesis, a square root of a negative number, or a divide-by-zero shows a plain-language message instead of NaN or a crash. To work in scientific notation, type a coefficient times a power of ten — for example 6.022*10^23 or 1.5*10^-3 — using the power button for the exponent.
If you have been reaching for a Desmos scientific calculator or a physical TI-30XS MultiView to check homework, this covers the same core functions for free with no app to install. It requires no sign-up, and because every calculation happens locally, nothing you type ever leaves your device.
Frequently asked questions
- Is the scientific calculator free to use?
- Yes. It is 100% free with no account, sign-up, or usage limits. Use it as often as you like.
- Is my data uploaded or stored anywhere?
- No. Every calculation runs locally in your browser using JavaScript. Nothing you type is sent to a server, logged, or saved, so your work stays completely private.
- What functions and operators does it support?
- Addition, subtraction, multiplication, division, modulo (%), parentheses, powers (x^y and x squared), square root, factorial (n!), natural log (ln), base-10 log, and the trig functions sin, cos, and tan, plus the constants pi and e.
- How do I switch between degrees and radians?
- Use the Deg/Rad toggle at the top. In Deg mode, sin, cos, and tan interpret their input as degrees (so sin(30) is 0.5); in Rad mode they use radians.
- Can I type with my keyboard instead of clicking buttons?
- Yes. You can type digits, + - * / operators, ^, !, and parentheses. Press Enter or = to evaluate, Backspace to delete, and Esc to clear everything.
- How do I enter scientific notation on this calculator?
- Write the number as a coefficient times a power of ten and use the power button for the exponent, such as 6.022*10^23 for a large value or 1.5*10^-3 for a small one. Negative exponents work the same way, so you can express both very large and very tiny numbers.
- What happens if I enter an invalid expression?
- The calculator never crashes or shows NaN. Incomplete or invalid input like a missing parenthesis, the square root of a negative number, or dividing by zero produces a clear, plain-language error message instead.
- How is this different from the Desmos scientific calculator?
- Both are free calculators that run in the browser with nothing to install, and both handle the same standard scientific functions like trig, logs, powers and roots. This one is a focused scientific calculator, so pick it when you want quick expression evaluation rather than a full app.
- Can I use this instead of a TI-30XS MultiView?
- For homework and checking your work, yes. It covers the same everyday functions a TI-30XS MultiView handles, including trig, logarithms, powers, roots, factorials and constants. Because it is an online tool and not a physical handheld, it will not replace an approved calculator where an exam requires one.
- Does this calculator graph equations?
- No. This is a standard, non-graphing scientific calculator. It evaluates an expression and returns a numeric result rather than plotting a curve, so use a dedicated graphing tool if you need to visualize functions.