Quick Answer
A basic calculator performs the four arithmetic operations — addition (+), subtraction (−), multiplication (×), and division (÷) — following standard order of operations (multiplication and division before addition and subtraction).
What Is a Simple Calculator?
A simple calculator performs addition, subtraction, multiplication, and division on any numbers, instantly and accurately. Despite the name, a well-implemented basic calculator handles decimals, negative numbers, and multi-step expressions correctly — following BODMAS/PEMDAS so 2+3×4 gives 14, not 20.
The value of a fast, clean, no-distraction online basic calculator is that it's always one click away, works on any device, and needs no installation — ideal for quick calculations during work, school, shopping, or budgeting.
How to Use This Simple Calculator
- 1Press number buttons to enter values.
- 2Press +, −, ×, or ÷ to select an operation.
- 3Press = to see the result. Press C to clear.
The Formula Explained
a + ba − ba × ba ÷ b (b ≠ 0)Brackets → Powers → Division/Multiplication → Addition/Subtraction (BODMAS)Example: 15% tip on a restaurant bill of 840
- Tip = 840 × 0.15 = 126
- Total = 840 + 126 = 966
Tips & Things to Know
- For percentages: to find 20% of 500, type 500 × 0.20.
- Division by zero is undefined — always check that a divisor isn't zero.