Scientific Calculator
Scientific Calculator
ChiliMath.com
DEG
RAD
M
0
Tip: works with your keyboard too — digits, + − × ÷, ^, ( ), Enter for =, Backspace, Esc for AC.
How to Use the Scientific Calculator
Type your expression using the buttons (or your keyboard), then press = to get the answer. You can enter long expressions just like you would write them on paper — for example 2 + 3 × sin(30) — and the calculator follows the correct order of operations.
1. Basic Calculations
- Enter numbers and operators: + − × ÷
- Press = to see the result.
- Press AC to start over, or ⌫ to erase the last entry.
2. Degrees vs. Radians
Before using trig functions, choose your angle unit with the Deg / Rad switch. The active mode is shown at the top-left of the display. In Deg mode, sin(30) = 0.5. In Rad mode, sin(π÷6) = 0.5.
3. Common Function Keys
| Key | What it does | Example |
|---|---|---|
| sin cos tan | Trigonometric functions | cos(60) = 0.5 |
| sin⁻¹ cos⁻¹ tan⁻¹ | Inverse trig (arc functions) | sin⁻¹(0.5) = 30 |
| x² x³ xʸ | Square, cube, or any power | 2^10 = 1024 |
| √x ³√x ʸ√x | Square, cube, or y-th root. For ʸ√x, enter y first, then x | 4 ʸ√ 81 = 3 |
| ln log | Natural log (base e) and log base 10 | log(1000) = 3 |
| π e | The constants pi and Euler’s number | 2π = 6.283185… |
| n! | Factorial | 5! = 120 |
| 1/x | Reciprocal | 8 then 1/x = 0.125 |
| % | Percent (divides by 100) | 200 × 15% = 30 |
| EXP | Scientific notation (×10^) | 3 EXP 8 = 300000000 |
4. Ans and Memory Keys
- Ans — recalls your last answer so you can keep calculating. After getting a result, pressing an operator like + automatically continues from that answer.
- M+ — adds the number on screen to memory. M− — subtracts it from memory.
- MR — recalls the stored memory value. An M appears on the display when memory holds a value.
- RND — inserts a random number between 0 and 1. ± — flips the sign of the current number.
5. Keyboard Shortcuts
On a computer, you can type directly: digits, + - * / ^ ( ) % !, the letter p for π, Enter for equals, Backspace to erase, and Esc to clear everything.
Tip: if you see Error, check for a missing number or mismatched parentheses, then press AC and try again.