About This Tool
What is Calculator?
A tool for evaluating math expressions directly. Supports arithmetic operations plus trigonometric functions, logarithms, exponents, and mathematical constants (pi, e). Maintains a calculation history.
How to Use
- Enter a math expression (e.g., 2+3*4, sin(pi/2)).
- Press Enter to see the result.
- View previous calculations in the history.
- Click 'Clear History' to reset.
Key Features
- Arithmetic operations with parentheses
- Trigonometric functions (sin, cos, tan), logarithms (log, ln)
- Built-in math constants (pi, e)
- Calculation history retention
Tips
- Use * for multiplication, / for division, and ** for exponentiation.
- pi equals 3.14159..., e equals 2.71828... as mathematical constants.
- Use parentheses to explicitly set operation order in complex expressions.
Calculator
Evaluate math expressions with functions and constants
Frequently Asked Questions
What mathematical functions are supported?▼
Supported functions include: sin, cos, tan (trigonometric), asin, acos, atan (inverse trig), log (base 10), ln (natural log), sqrt (square root), abs (absolute value), ceil/floor (rounding), and ** (exponentiation). Constants pi and e are also available.
Does the calculator follow standard order of operations?▼
Yes. The calculator follows standard mathematical precedence (PEMDAS/BODMAS): Parentheses first, then Exponents, then Multiplication/Division (left to right), then Addition/Subtraction (left to right). Use parentheses to override the default order when needed.
How do I calculate percentages in the calculator?▼
For percentage of a number, multiply: 15% of 200 = 200 * 0.15 = 30. For percentage increase: 200 * 1.15 = 230 (15% increase). For percentage decrease: 200 * 0.85 = 170 (15% decrease). Or use the dedicated percentage calculator tool for a simpler interface.
Related Tools
Unix Timestamp Converter
Convert between Unix timestamps and dates
Percentage Calculator
Perform common percentage calculations
Age Calculator
Calculate Korean age and international age from birth date
D-Day Calculator
Calculate days remaining until a target date or days elapsed since a past date
Auspicious Days Calendar
Find auspicious days (Son-eomneun-nal) based on the Korean lunar calendar for moving, weddings, and more
BMI Calculator
Calculate your Body Mass Index (BMI)