Simple Calculator - Add, Subtract, Multiply & Divide Free Simple Calculator
Perform basic arithmetic — add, subtract, multiply or divide two numbers. View formula, result and history of your last 5 calculations.
Results History
Use the calculator to see your calculation history here.
Simple Calculator - Guide
What is a Simple Calculator?
A simple calculator performs the four basic arithmetic operations: addition, subtraction, multiplication and division. Enter two numbers, choose an operation, and get an instant result.
This tool is perfect for quick everyday calculations — splitting a bill, checking totals, or doing basic math homework.
Arithmetic Operations
Addition (+): Combines two numbers into their sum.
a + b = sum
Subtraction (−): Finds the difference between two numbers.
a − b = difference
Multiplication (×): Finds the product of two numbers.
a × b = product
Division (÷): Finds how many times one number fits into another.
a ÷ b = quotient (b ≠ 0)
Division by Zero
Division by zero is undefined in mathematics. If you try to divide any number by zero, the calculator will show an error. This is because no number multiplied by zero can produce a non-zero result.
Tips
- Keyboard support: Use number keys (0–9), operators (+, -, *, /), Enter for equals, Escape for clear, Backspace to delete last digit, and % for percent.
- Chained operations: Press an operator after a result to continue calculating (e.g., 5 + 3 = 8, then × 2 = 16).
- AC vs C: AC clears everything. C appears after you start typing and clears only the current entry.
- Percentage: Works like iPhone — 200 + 10% gives 220 (10% of 200 added). On its own, converts the number to a decimal (e.g., 25% = 0.25).
- History: Your last 5 calculations are saved in the session. Use the Clear button to reset.