Scientific Calculator
0
History
Your results will appear here. Tap Use on any of them to carry it into the next calculation, in this calculator or another one. History is kept while this tab is open.
For more advanced math, this scientific calculator does powers, roots, logarithms and trigonometry in degrees or radians, shows big and tiny numbers in scientific notation, and keeps a memory. Type a whole expression with parentheses, then press =. In degrees, sin(30) = 0.5.
Scientific notation
Scientific notation writes a number as a × 10ⁿ. The display shows it with an E: 3.011E23 reads as 3.011 × 10²³. The switch happens on its own once a result reaches 10¹² or drops below 10⁻⁹, and the part before the E keeps up to 6 significant digits. So 299792458 × 299792458 shows as 8.98755E16, while the history keeps the full number.
As a scientific notation calculator, it works both ways. 6.022 × 10^23 ÷ 2 comes out as 3.011E23, and 1.2345 × 10^4 gives back a plain 12345.
How to do scientific notation on a calculator
The EXP key enters "× 10^". Type 6.022 EXP 23 and the display shows 6.022 × 10^23. For a negative exponent, press ± right after EXP: 1.5 EXP ± 7 is 1.5 × 10^−7, or 0.00000015.
EXP belongs to the number. 1 ÷ 2 EXP 3 divides 1 by 2000 and gives 0.0005.
There's no button to convert to scientific notation on this calculator. Do it by hand, then check: in 12345, move the decimal point 4 places left to get 1.2345. Now 1.2345 EXP 4 = should give back 12345.
Free scientific calculator online
This free scientific calculator runs in your browser: nothing to download, no sign-up. On a phone you tap the keys. On a computer you can also type digits, + - * /, ^ and parentheses, with Enter for =.
Every result goes into the history with a Use button, which sends the number into the next calculation, here or in another calculator. History, memory and the DEG/RAD setting last until you close the tab. The numbers you enter are not sent anywhere.
How it's calculated
The expression is worked out in this order:
- parentheses
- functions, x² and powers (powers go right to left: 2^3^2 = 512)
- × and ÷
- + and −
So 2 + 3 × 4 = 14, but (2 + 3) × 4 = 20. A leading minus comes after the power: −3² = −9. Open parentheses close themselves on =.
It's a scientific calculator with degree and radian modes: sin, cos and tan take degrees until you tap DEG to switch to RAD. sin(30) is 0.5 in degrees and −0.988031624093 in radians. In degrees, multiples of 90° are exact: sin(180) = 0, tan(90) is Not defined.
Answers are decimals, as on a basic scientific calculator, with up to 12 significant digits and no floating-point leftovers: 0.1 + 0.2 = 0.3. There's no fraction key. For fractions, use the fraction calculator.
How to use a scientific calculator
To work a scientific calculator like this one, you mostly press a key, then a number:
- sin, cos, tan, ln, log, √ open a parenthesis: sin, then 30, shows sin(30.
- x² squares the number to its left: 5 x² = 25.
- xʸ raises to any power: 2 xʸ 10 = 1024. It also takes roots: 27 xʸ (1 ÷ 3) = 3, the cube root.
- 1/x gives the reciprocal: 8 becomes 0.125.
- Ans puts in your last result.
- M+ / M− add the display to memory or subtract it, MR recalls it, MC clears it. The display shows M while memory isn't zero.
- % works as on a basic calculator: 50 + 10% = 55. For percent problems, use the percentage calculator.
- ⌫ removes the last thing you typed. C clears the expression but keeps the history, memory and Ans.
Examples
How to do exponents, square roots, logs and trigonometry on a scientific calculator: one example each, with the keys to press.
| Keys | Display | Result |
|---|---|---|
| √ 144 = | √(144) = | 12 |
| 2 xʸ 10 = | 2^10 = | 1024 |
| log 1000 = | log(1000) = | 3 |
| DEG: sin 30 = | sin(30) = | 0.5 |
| 6.022 EXP 23 ÷ 2 = | 6.022 × 10^23 ÷ 2 = | 3.011E23 |
FAQ
What is a scientific calculator?
A scientific calculator adds trigonometry, logarithms, powers and roots to the four basic operations, along with parentheses and scientific notation for very large or very small numbers. For everyday sums, a basic calculator is enough.
How do you do scientific notation on a calculator?
Type the number, press EXP, then the power of ten. 6.022 EXP 23 ÷ 2 = shows 3.011E23, which means 3.011 × 10²³.
Is this scientific calculator free to use online?
Yes, it's free online, with no sign-up and nothing to download.
Does it work in degrees or radians?
Both: the DEG key in the top row switches to RAD and back, and your choice holds until you close the tab. Degrees are the default, so sin(30) is 0.5, while in radians it's −0.988031624093.