Scientific Calculator
Trigonometry, logarithms, powers and factorials in one simple online tool
Supports +, -, Ã, Ãˇ, ^, sin, cos, tan, log, ln, sqrt, !, Ī, e and parentheses
How to Use This Scientific Calculator
- 1
Choose Degree or Radian mode depending on the type of calculation you need.
- 2
Type your expression directly into the input box or tap the calculator buttons.
- 3
Use function buttons such as sin, cos, tan, log, ln, sqrt and more for advanced operations.
- 4
Press the Calculate button or hit Enter on your keyboard to see the result.
- 5
Tap Clear anytime to reset the input field and start a fresh calculation.
Key Features
Complete Scientific Functions
Access trigonometry, logarithms, powers, roots and factorials in a single calculator.
Degree & Radian Modes
Switch instantly between degree and radian modes for trigonometric calculations.
Instant Accurate Results
Get precise calculation results the moment you press Calculate or hit Enter.
Parentheses Support
Build complex nested expressions using parentheses for correct order of operations.
Works On Any Device
Use the calculator smoothly on mobile phones, tablets and desktop browsers.
No Data Stored
Every calculation happens in your browser. Nothing you type is saved anywhere.
How the Calculation Works
This calculator reads your expression and processes it following the standard order of operations, meaning parentheses are solved first, then powers, then multiplication and division, and finally addition and subtraction.
Trigonometric functions depend on the selected mode. When Degree mode is active, angle values are first converted to radians before being processed:
Degrees = Radians à (180 Ãˇ Ī)
Logarithm and natural log use different bases. The log function returns the base-10 logarithm, while ln returns the natural logarithm using base e (approximately 2.71828).
ln(x) = logarithm of x to base e
n! = n à (n-1) à (n-2) à ... à 1
Powers are calculated using the caret symbol, so 2^3 equals 8, and square roots require a non-negative input since negative roots are not real numbers.
Practical Examples
đŽđŗ Priya, Mumbai
An engineering student needs sin(45) for a physics assignment on wave angles.
Entered in Degree mode: sin(45)
Verified result: 0.70710678
đŽđŗ Arjun, Bangalore
A civil engineer checks a load calculation combining a square root and a power term.
Entered expression: sqrt(144)+2^3
Verified result: 20
đēđ¸ Michael, Chicago
A data analyst needs a quick base-10 logarithm for a report on data scaling.
Entered expression: log(1000)
Verified result: 3
đŦđ§ Sophie, London
A statistics student calculates a factorial for a probability homework question.
Entered expression: 5!
Verified result: 120
What is a Scientific Calculator?
A scientific calculator is a tool built for handling advanced mathematics beyond basic addition and subtraction. It supports trigonometry, logarithms, exponents, roots and factorials, which are commonly needed in school, engineering, statistics and everyday problem solving.
Unlike a standard calculator, this tool understands functions like sin, cos, tan, log and ln, along with constants like Ī and e. It also respects the correct order of operations, so nested expressions with parentheses are solved accurately every time.
Whether you are a student preparing for exams, an engineer verifying a formula, or someone working with data, this tool gives you a reliable way to calculate without needing a physical device.
Want a deeper walkthrough with more real-world examples?
Read our complete Scientific Calculator guide âFrequently Asked Questions
Is this tool free to use?
Yes, this scientific calculator is free to use with no login, signup or hidden charges.
How do I switch between degree and radian mode?
Use the Degree and Radian buttons above the calculator grid. The active mode is highlighted and applies to sin, cos, tan, asin, acos and atan calculations.
Can this calculator handle factorial of large numbers?
Yes, up to 170! since larger factorial values exceed standard number precision in browsers. Non-integer or negative values will show an error.
What is the difference between log and ln?
log calculates logarithm base 10, while ln calculates the natural logarithm using base e. Both require a positive input value.
Does this calculator work on mobile phones?
Yes, the layout adjusts automatically for phones, tablets and desktops, and all buttons meet touch-friendly sizing.
Can I use parentheses for complex expressions?
Yes, you can nest parentheses to control the order of operations for multi-step calculations.
Why do I get an error for negative square roots?
Square roots of negative numbers are not real numbers, so the calculator shows an error instead of an incorrect result.
What is the maximum number of decimal places shown?
Results are rounded to a maximum of 8 decimal places to keep the output accurate and readable.
Can I calculate trigonometric functions like sin, cos, tan?
Yes, tap the sin, cos or tan buttons and enter a value. Results depend on whether Degree or Radian mode is selected.
Is my calculation data stored or saved anywhere?
No, all calculations run directly in your browser. Nothing you type is stored, saved or sent to a server.
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