Math
Scientific Calculator Online with Trig, Logs, and Memory
Use a full scientific calculator online with trigonometry, logarithms, exponents, factorials, memory keys, and keyboard support.
Search intent guide
Use this page when you need a fast answer to scientific calculator online
Use this scientific calculator when you need an all-purpose math tool with trigonometry, logs, powers, memory, and a full keyboard-friendly layout. It is designed for fast calculation flow when a basic calculator would force too many steps.
Editorial review
Best for
- Trig, exponent, and logarithm calculations in one place
- Quick keyboard-based math without switching tools
- General-purpose use during homework or technical work
Before you start
- Check whether the angle mode matches the problem
- Use parentheses when the order of operations matters
- Clear memory or history if you are switching to a new problem
Your latest completed calculations.
Enter runs the current expression.
Backspace deletes the last character.
Esc clears the display.
Digits, operators, and letters like sin, cos, and log also work directly from the keyboard.
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How this Scientific Calculator works
Full scientific calculator with trig, logs, exponents, factorial, memory, and DEG/RAD modes. Supports keyboard input, keeps the last answer for chained calculations, and follows standard operator precedence.
Quick guide
Jump to the section you need, then return to the scientific calculator.
Best use cases
- Handle quick trig, logarithm, exponent, fraction, or factorial calculations without opening a desktop app.
- Run chained calculations in the browser while keeping memory values and the last answer available.
- Check homework, engineering, finance, or programming math that needs more than a basic calculator.
Inputs
- Expression entry via buttons or keyboard
- Angle mode selection (DEG or RAD)
- Memory actions (MC, MR, M+, M-)
Outputs
- Computed result
- Memory register value
- ANS value from the last calculation
Assumptions
- Operator precedence follows standard math rules
- Calculations use JavaScript floating point precision
Common mistakes
- Using DEG mode for radians input, or RAD mode for degree input, before trig calculations.
- Skipping parentheses and assuming the calculator will follow a custom order instead of standard precedence.
- Expecting perfect symbolic precision even though the calculator uses floating-point arithmetic in the browser.
Tips
- Use parentheses to control order of operations
- Toggle DEG or RAD before trig calculations
- Use ANS to chain results quickly
Scientific Calculator formula guide
Use these scientific calculator formulas to audit the output or explain it to someone else.
3 formulas
Scientific Calculator examples
Review a ready-made scientific calculator scenario, copy it, then tweak inputs to match your case.
Example
Trig in DEG mode
Inputs
- Set angle mode to DEG
- Enter sin(30) and press equals
Outputs
- Result is about 0.5
- ANS stores the last value
Switch to RAD if your inputs are in radians.
Example
Log example
Inputs
- Enter log(1000) and press equals
- Or use ln(2.718) for natural log
Outputs
- log(1000) returns 3
- ln(2.718) returns about 1
Use log for base 10 and ln for natural log.
Common keys
| Key | Example input | Result |
|---|---|---|
| sin | sin(30) | 0.5 |
| sqrt | sqrt(81) | 9 |
| 10^x | 10^3 | 1000 |
| 1/x | 1/4 | 0.25 |
| x! | fact(5) | 120 |
Trig examples assume DEG mode for clarity.
Sine values in DEG
Focus point
0
0
Position
#1 of 4
Original order
Share of total
0%
Total: 2.37
Use RAD mode if you prefer radians for trig inputs.
References
- Standard scientific calculator functions
- Trigonometric and logarithmic definitions
Learn more
Guides connected to the scientific calculator
Use these short guides when you want the decision framework behind the numbers, not just the raw output.
Category guide
Math Calculator Guide
Pick the right math calculator by problem type: arithmetic, ratios, coordinates, geometry, or measurement.
Directly related
Articles that mention this calculator
FAQ
Scientific Calculator FAQ
What does the Scientific Calculator do?
Full scientific calculator with trig, logs, exponents, factorial, memory, and DEG/RAD modes. Supports keyboard input, keeps the last answer for chained calculations, and follows standard operator precedence. It is part of our math toolkit.
When should I use this calculator?
Use it when you need to Handle quick trig, logarithm, exponent, fraction, or factorial calculations without opening a desktop app. Run chained calculations in the browser while keeping memory values and the last answer available.
What inputs do I need?
Typical inputs include Expression entry via buttons or keyboard, Angle mode selection (DEG or RAD), Memory actions (MC, MR, M+, M-).
How are the results calculated?
We follow the formulas and assumptions outlined in the "How this calculator works" section. You will see outputs like Computed result, Memory register value, ANS value from the last calculation.
What mistakes should I avoid?
Common mistakes include Using DEG mode for radians input, or RAD mode for degree input, before trig calculations. Skipping parentheses and assuming the calculator will follow a custom order instead of standard precedence.
Can I share or download the results?
Use the Copy link or Print buttons to share your results. If a table or chart appears, you can download the data as CSV.
Is my data stored?
No. Calculations run in your browser and we do not store your inputs.
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