Fraction Calculator
Add, subtract, multiply, divide, and simplify proper, improper, and negative fractions with step-by-step GCD reduction and decimal conversion.
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Scientific Calculator
Evaluate algebraic, trigonometric, logarithmic, and exponential expressions online with full BODMAS/PEMDAS bracket precedence, DEG / RAD angle switching, and interactive calculation history.
Scientific Keypad
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Calculation History
Click any previous result to insert it into your current expression.
- No calculations yet. Evaluate an expression to record history.
Supported Functions & Constants
- Trigonometry: sin(x), cos(x), tan(x), and inverse asin(x), acos(x), atan(x)
- Logarithms: Base-10 log(x) and natural log ln(x)
- Powers & Roots: x^2, x^y, sqrt(x), and factorial n!
- Constants: π ≈ 3.14159265 and Euler's number e ≈ 2.71828183
How to Use the Online Scientific Calculator
Whether you are solving SEE Optional Mathematics trigonometry identities or NEB Class 11/12 Physics and Chemistry numericals, follow these steps:
Degrees to Radians: θ (radians) = θ (degrees) × (π ÷ 180)
Logarithm Identity: log₁₀(x) = ln(x) ÷ ln(10)
Factorial Definition: n! = n × (n − 1) × … × 2 × 1 (where 0! = 1)
Logarithm Identity: log₁₀(x) = ln(x) ÷ ln(10)
Factorial Definition: n! = n × (n − 1) × … × 2 × 1 (where 0! = 1)
Example 1 (Trigonometry in DEG mode): Compute sin(30) + cos(60):
sin(30°) = 0.5, cos(60°) = 0.5 → 0.5 + 0.5 = 1
Example 2 (pH & Logarithms): Compute -log(0.001):
-log₁₀(10⁻³) = 3
Frequently Asked Questions
Use the DEG / RAD toggle buttons at the top of the calculator keypad. In DEG mode, sin(30) evaluates to 0.5; in RAD mode, sin(pi/6) evaluates to 0.5.
The log function computes the common logarithm with base 10 (for example, log(100) = 2), whereas ln computes the natural logarithm with base e ≈ 2.71828 (for example, ln(e) = 1).
Yes. You can type numbers, +, -, *, /, ^, %, !, parentheses ( ), Enter to evaluate, Backspace to delete a character, and Escape to clear.
Our controlled expression parser strictly follows mathematical precedence: parentheses and functions first, followed by factorials and powers (right-associative), then multiplication and division, and finally addition and subtraction.
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