Scientific Calculator
Do everything from basic sums to trig, logs, powers and roots. Click the buttons or type on your keyboard.
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Tip: click the calculator, then type. Shortcuts: s, c, t, l (sin, cos, tan, ln), p (π), e, a (Ans), Enter (=), Esc (clear).
How to use it
- Type your sum with the buttons or your keyboard.
- Watch the answer update as you type.
- Press = to save it to the history and use it again with Ans.
For trig functions, check that Deg or Rad is set the way you want before you start.
What each button means
Angles and trig
- Deg / Rad
- Pick degrees or radians for sin, cos and tan. Check the label under the display.
- sin, cos, tan
- Trig functions. Type the angle, then close the bracket.
- sin⁻¹, cos⁻¹, tan⁻¹
- Opposite of sin, cos and tan. They give you the angle.
- π and e
- Two special numbers: π ≈ 3.14159 and e ≈ 2.71828.
Powers and roots
- xʸ
- x to the power of y. For 2 to the power of 5, press 2, xʸ, 5.
- x² and x³
- Square and cube of a number.
- eˣ and 10ˣ
- e or 10 raised to a power.
- √x and ³√x
- Square root and cube root.
- ʸ√x
- The y-th root of x. Type y first. For the cube root of 27, press 3, ʸ√x, 27.
Logs and other tools
- ln
- Natural log (base e).
- log
- Log base 10.
- 1/x
- One divided by your number.
- %
- Divides by 100. So 50% means 0.5.
- n!
- Factorial. 5! means 5 × 4 × 3 × 2 × 1.
- EXP
- Types a power of 10. 2 EXP 3 means 2 × 10³ = 2000.
Memory and editing
- Ans
- Your last answer.
- M+ / M−
- Add or subtract the current value to or from memory.
- MR
- Put the memory value into your sum.
- ±
- Switch a number between positive and negative.
- RND
- A random number between 0 and 1.
- Back / AC
- Back removes the last item. AC clears everything.
Examples
| What you want | What to press | Answer |
|---|---|---|
| Order of operations | 2 + 3 × 4 | 14 |
| Sine of 30° (Deg mode) | sin ( 30 ) | 0.5 |
| Square root of 16 | √x ( 16 ) | 4 |
| Cube root of 27 | 3 ʸ√x 27 | 3 |
| 2 to the power of 10 | 2 xʸ 10 | 1024 |
| Factorial of 5 | 5 n! | 120 |
| Log base 10 of 1000 | log ( 1000 ) | 3 |
Keyboard shortcuts
Click the calculator first so it can receive your keys.
- 0–9 . + − * / ^ ( )
- Numbers and operators
- Enter or =
- Get the result
- Backspace
- Remove the last item
- Esc
- Clear everything
- s, c, t, l
- sin, cos, tan, ln
- p, e, a
- π, e, Ans
Frequently asked questions
Should I use degrees or radians?
Use degrees for everyday angles like 30° or 90°. Use radians when your problem is written with π, such as π/2. The calculator starts in degrees, and the current mode is shown under the display.
Does it follow the order of operations?
Yes. It works out brackets first, then powers, then multiplication and division, then addition and subtraction. So 2 + 3 × 4 gives 14, not 20.
What does the % button do?
It divides the number before it by 100. So 200 × 10% is 20, and 50 + 10% is 50.1. It does not add 10% of 50.
Why do I see Error?
The sum is not possible. Common causes are dividing by zero, taking ln or log of zero or a negative number, tan(90°), the square root of a negative number, or an unfinished expression.
What is the largest factorial I can find?
170!. Anything bigger is too large for the calculator to show.
Do I have to close my brackets?
No. Any open brackets are closed for you when you work out the result.