Basic Calculator - Simple Arithmetic Calculator
Use our free basic calculator for simple arithmetic calculations including addition, subtraction, multiplication, and division. Our simple calculator provides quick and accurate calculations for everyday math.
Free basic calculator for simple arithmetic operations. Add, subtract, multiply, divide, and perform basic math calculations online.
Calculator Features
Basic Operations
- • Addition (+): Add two numbers
- • Subtraction (-): Subtract two numbers
- • Multiplication (×): Multiply two numbers
- • Division (÷): Divide two numbers
- • Equals (=): Calculate result
Advanced Features
- • Decimal Point: Enter decimal numbers
- • Percentage (%): Calculate percentages
- • Square Root (√): Calculate square root
- • Plus/Minus (±): Change sign
- • Backspace (⌫): Delete last digit
Frequently Asked Questions About Basic Calculator
What is a basic calculator and what operations does it support?
A basic calculator performs fundamental arithmetic operations: addition (+), subtraction (-), multiplication (×), and division (÷). Our simple calculator also supports percentage calculations, square root, and basic memory functions. It's perfect for everyday math calculations, budgeting, shopping, and quick computations. Unlike scientific calculators, basic calculators focus on simplicity and ease of use for common calculations.
How do I use the basic calculator?
Using our basic calculator is simple: click the number buttons to enter values, then click the operation buttons (+, -, ×, ÷) to perform calculations. Click the equals (=) button to get your result. You can chain multiple operations together. The calculator displays your input and results clearly, and you can clear the display with the C (Clear) button to start a new calculation.
Can I use this calculator on mobile devices?
Yes, our basic calculator is fully responsive and works perfectly on mobile phones, tablets, and desktop computers. The calculator interface adapts to your screen size, making it easy to use on touchscreens. You can use it anywhere you have internet access, making it a convenient alternative to physical calculators.
Is this calculator free to use?
Yes, our simple calculator is completely free to use with no registration required, no hidden fees, and no limitations. You can use it as often as you need for personal, educational, or business calculations. There are no ads interrupting your calculations, and all features are available at no cost.
How accurate are the calculations?
Our basic calculator provides highly accurate calculations with precision suitable for most everyday needs. Results are displayed with appropriate decimal places. For very precise scientific or financial calculations requiring many decimal places, consider using our scientific calculator or specialized financial calculators.
What's the difference between a basic calculator and a scientific calculator?
A basic calculator handles simple arithmetic (addition, subtraction, multiplication, division) and basic functions (percentages, square root). A scientific calculator includes advanced functions like trigonometry (sin, cos, tan), logarithms, exponentials, and complex number operations. Use our basic calculator for everyday math, and our scientific calculator for advanced mathematics, engineering, or scientific calculations.
How the Basic calculator works
This free basic calculator runs entirely in your browser using standard mathematical formulas. Enter your figures, tap Calculate, and results update instantly — no signup required.
Figures are estimates for general information. Always verify important decisions with a qualified professional where relevant.
- Input your values using the fields above (numeric keypad on mobile).
- Results use precise floating-point arithmetic rounded for display.
- Refresh or change inputs and recalculate anytime.
Worked example
- Choose typical values for a common basic scenario.
- Enter those values in the calculator fields above.
- Tap Calculate and compare the on-screen result with the expected formula outcome.
- Adjust one input at a time to see how the result changes.