Scientific Calculator
A calculator with trigonometric, logarithmic, and power functions.
How to use the Scientific Calculator
Basic operations
- Type numbers and operators (+, −, ×, ÷) to build an expression, then press = or Enter for the result.
- Use the bracket keys ( and ) to control the order of calculation.
- C clears everything; CE clears the current entry. Backspace deletes the last character.
- The display shows your expression on top and the running result below.
Powers and roots
- x² and x³: enter a number, then press the key to square or cube it.
- xʸ: enter the base, press xʸ, enter the exponent, then press =.
- √: enter a number, then press √ for its square root.
- 10ˣ: enter the exponent, press 10ˣ to raise 10 to that power.
- 1/x: enter a number, press 1/x for its reciprocal.
Trigonometry
- Toggle DEG / RAD first to choose degrees or radians — the current mode shows in the status bar.
- sin, cos, tan: enter an angle, then press the function. Or press the function on an empty display and it will prompt you to enter the angle, then press =.
- sin⁻¹, cos⁻¹, tan⁻¹: enter a value (between −1 and 1 for inverse sine and cosine), then press the inverse function to get the angle.
Logarithms and constants
- log: base-10 logarithm. Enter a positive number, then press log.
- ln: natural logarithm (base e). Enter a positive number, then press ln.
- π inserts pi (≈ 3.14159); e inserts Euler’s number (≈ 2.71828) into your expression.
Other functions
- x!: factorial. Enter a whole number ≥ 0, then press x! (for example 5! = 120).
- |x|: absolute value. Enter a number, then press |x| to drop its sign.
- %: converts the current value to a percentage (divides by 100).
Memory keys
- M+ adds the current value to memory; M− subtracts it.
- MR recalls the stored value into your expression; MC clears memory.
- An M indicator appears in the status bar whenever memory holds a value.
Tip: results show decimals only when needed, so 10 ÷ 4 gives 2.5 while √144 gives 12. Domain errors (such as the square root of a negative or an out-of-range inverse trig value) display a short error message rather than an incorrect number.
Frequently asked questions
sqrt, sin, cos, tan, log (base 10), ln, abs, powers with ^, pi, and basic arithmetic.
Trigonometric functions use radians.
Use the caret, e.g. 2^3 for 2 cubed.
The expression has a typo or an unsupported symbol. Check brackets and function names.
Entirely in your browser — nothing is sent anywhere.
About the Scientific Calculator
This scientific calculator evaluates mathematical expressions that go beyond basic arithmetic, including square roots, trigonometric functions, logarithms, powers, and the constant pi. You type a full expression and it returns the result, making it suitable for students, engineers, and anyone working through calculations that a basic calculator cannot handle.
What it can compute
The calculator supports the four basic operations along with square root, sine, cosine, tangent, base-ten logarithm, natural logarithm, absolute value, and exponentiation using the caret symbol. It respects the standard order of operations, so multiplication and division resolve before addition and subtraction, and brackets force evaluation in the order you intend. This lets you write a single expression such as a square root added to a power and a trigonometric term, and get the combined answer in one step.
Radians and degrees
An important detail for trigonometry is that the functions here work in radians, not degrees, which is the mathematical standard. If you are working in degrees, convert first by multiplying degrees by pi and dividing by 180. This catches many people out: the sine of 90 in radians is not the same as the sine of 90 degrees, so always check which unit your problem uses before trusting a trigonometric result.
Writing expressions correctly
Use the caret for powers, so two cubed is written as 2^3. Wrap function arguments and any part you want evaluated first in brackets to avoid ambiguity. If the calculator reports an invalid expression, it usually means a bracket is unmatched, a function name is misspelled, or an unsupported symbol was used. Reviewing the expression for these issues almost always resolves it.
Common uses
Students use it for algebra, trigonometry, and physics homework. Engineers and scientists use it for quick technical calculations. It is also useful for anyone needing roots, logarithms, or powers occasionally without opening dedicated software. Because it accepts a whole expression at once, it is faster than pressing keys one at a time for multi-step sums.
Privacy and related tools
Everything is evaluated in your browser, so your calculations are private and work without any data being sent to a server. For everyday arithmetic the simpler Online Calculator is quicker, and for statistics such as averages the Mean, Median & Mode Calculator is purpose-built. Results are returned instantly as you calculate.