Scientific Calculator with Trig, Log and Exponent Functions
Our scientific calculator solves expressions with trig, log, powers, roots and factorials. It works in degrees or radians and follows the standard order of operations. Type an expression or tap the keys, and use it as a trig calculator for sine, cosine and tangent.
What Is a Scientific Calculator?
It handles far more than the four basic operations. It adds trig functions, logarithms, powers, roots, factorials and constants such as pi. Students and engineers use it for algebra, physics, chemistry and surveying.
Ours takes a whole line at once, such as 2(3 + 4)^2, and follows the order of operations. A handheld device makes you press keys in a fixed order. Here you can edit the line at any time.
Common uses include checking homework and testing a formula before you build with it. The history list keeps six entries so you can compare versions of a calculation. Everything stays on your device.
How to Use the Scientific Calculator
- Type an expression in the box or tap the keys.
- Choose DEG for degrees or RAD for radians.
- Press equals or Enter to save the result to the history list.
- Tap Ans to reuse the last answer.
- Click a history entry to load it again.
The result updates while you type, so you see an error as soon as a bracket is missing. Closing brackets at the end are added for you. Implicit multiplication works, so 2pi and 3(4 + 1) are fine.
Trig Calculator: Sine, Cosine and Tangent
The trig keys cover sin, cos and tan along with asin, acos and atan. In degree mode, sin(30) gives 0.5 and tan(45) gives 1. In radian mode, sin(pi/6) gives the same 0.5. Check the DEG and RAD setting before you start, because a wrong mode causes most bad answers.
Inverse functions return an angle. For example, asin(0.5) returns 30 in degree mode. A trig calculator also helps with right triangles, where the ratios link angles to sides.
Log Calculator and Exponent Calculator
The log key uses base 10, so log(1000) equals 3. The ln key uses base e, so ln(e) equals 1. Use the caret for powers, so the tool doubles as an exponent calculator for values like 2^10 or 9^0.5. Roots have their own keys, with sqrt for square roots and cbrt for cube roots.
Order of Operations
| Priority | Operation |
| 1 | Brackets |
| 2 | Factorial and percent |
| 3 | Powers and roots |
| 4 | Multiplication and division |
| 5 | Addition and subtraction |
The scientific calculator reads from left to right inside each level. Powers group from the right, so 2^3^2 means 2^9 and equals 512. A minus sign in front of a power applies last, which is why -2^2 gives -4.
Worked Examples
Degrees and Radians
Type sin(30) + sqrt(16) + log(100) in degree mode. The terms are 0.5, 4 and 2, so the answer is 6.5. The same line in radian mode gives about 5.012, because sin(30) then means 30 radians.
Right Triangle Slope
A ramp rises 3 meters over a run of 12 meters. Type atan(3/12) in degree mode and the trig calculator returns about 14.04 degrees. Check it with tan(14.04), which gives about 0.25.
Factorial and Percent
Type 5! to get 120, the number of ways to arrange five items. Type 15% and the tool returns 0.15. For 15% of 80, write 80 × 15% and read 12.
Tips for Accurate Results
- Match the angle mode to your problem before you type.
- Use brackets around fractions, such as (3 + 4) / 7.
- Round only at the end, not between steps.
- Use the history list to compare two versions of a line.
The tool shows up to 12 significant digits. Very large and very small answers appear in scientific notation, such as 1e+21. Factorials work up to 170!, because larger values do not fit in a standard number.
Why Use Our Scientific Calculator
It works as a trig calculator and a power tool, runs in your browser and keeps nothing you type. The keypad works on phones and the box takes a typed line on a computer. Enter your expression and get your answer now.
Frequently asked questions
Is it free to use?
Yes, it is free and runs in your browser.
Does the trig calculator use degrees or radians?
Both, and you switch with the DEG and RAD buttons.
Can it work as a log calculator?
Yes, use log for base 10 and ln for base e.
How do I find a power?
Use the caret, so 2^8 gives 256.
What does Ans do?
It inserts the last result into your expression.
Why does sin(180) show 0?
The tool rounds values below 1e-14 to zero.
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