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How this 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 straight to the section you need, then return to the 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
Tips
- Use parentheses to control order of operations
- Toggle DEG or RAD before trig calculations
- Use ANS to chain results quickly
Formula guide
Use these formulas to audit the output or explain it to someone else.
3 formulas
Usage examples
Review a ready-made 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
FAQ
Common questions
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.
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.
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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