Scientific Calculator
When the basic four-function calculator runs out of buttons — logs, trig, factorials, nested parentheses — this one picks up. It handles the full scientific keyboard, supports degree and radian modes, keeps a running memory (MS, MR, MC, M+, M-) and parses complete expressions so you can type sin(30) + log(100) - sqrt(2) as a single line.
How to use the scientific calculator
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1
Switch DEG or RAD
DEG for degrees (default), RAD for radians. Critical before any trig operation.
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2
Build the expression
Use parentheses freely. Supports sin, cos, tan, asin, acos, atan, log, ln, exp, sqrt, x^y, n!, pi, e.
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3
Use memory if you need it
MS stores, MR recalls, M+ adds the display to memory, M- subtracts. MC clears.
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4
Hit equals
The full expression evaluates and the history pane keeps the last dozen results.
Operator reference
The calculator uses standard math notation, with a few keyboard-friendly shortcuts.
Functions and operators
| Input | Meaning | Example |
|---|---|---|
+, -, *, / |
Basic arithmetic | 3 + 5 * 2 = 13 |
^ or ** |
Exponentiation | 2^10 = 1024 |
sqrt(x) |
Square root | sqrt(144) = 12 |
x^(1/n) |
nth root | 27^(1/3) = 3 |
sin, cos, tan |
Trig (honors DEG/RAD) | sin(30) in DEG = 0.5 |
asin, acos, atan |
Inverse trig | atan(1) in DEG = 45 |
log(x) |
Base-10 logarithm | log(1000) = 3 |
ln(x) |
Natural log (base e) | ln(e) = 1 |
exp(x) or e^x |
e to the x | exp(1) ≈ 2.71828 |
n! |
Factorial | 5! = 120 |
pi, e |
Constants | 2 * pi ≈ 6.28318 |
abs(x) |
Absolute value | abs(-7) = 7 |
mod or % |
Remainder | 17 mod 5 = 2 |
Order of operations
Standard PEMDAS: parentheses, exponents, multiplication/division (left to right), addition/subtraction. Use parentheses when in doubt — they are free.
Tips
- DEG vs RAD catches everyone.
sin(90)is 1 in degrees but 0.893 in radians. Check the mode indicator before trusting trig. - Large factorials overflow around 170!. The tool returns Infinity above that.
- Scientific notation displays automatically above 1e+10 or below 1e-6. Click the result to switch to fixed.
- Use memory for constants you reuse — store Avogadro, Planck, or your favorite coefficient once, recall with MR.
Frequently Asked Questions
Modes differ. This calculator defaults to DEG, where sin(30) = 0.5. Some phone calculators default to RAD, where sin(30) means sin(30 radians) and returns about -0.988 — a completely different value (30 radians is roughly 1719 degrees). Always check the DEG/RAD indicator before trusting a trig result.
Yes. Compute a value, press MS to store, continue with more math, then MR anywhere to drop the stored value into a new expression. Useful for intermediate results in physics problems.
Not yet — this is a real-number scientific calculator. Use a matrix or CAS tool for imaginary i and complex arithmetic.
No. Expressions evaluate in your browser and the history pane only persists in your session.
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