Basic Calculator
Perform basic arithmetic operations with our easy-to-use online calculator. Features include addition, subtraction, multiplication, division, and calculation history.
Calculator
Current Result
How to Use the Basic Calculator
- Enter Numbers: Click on the number buttons (0-9) to input your values
- Choose Operation: Select an operation (+, -, ×, ÷) to perform calculations
- Get Results: Press the equals button (=) to see your calculation result
- Use Decimal: Click the decimal point (.) button to enter decimal numbers
- Clear Calculator: Press C to clear all values and start fresh
- View History: See your previous calculations in the history panel
Calculator Examples
Basic Operations
Decimal Operations
Calculator Tips & Best Practices
Order of Operations
Basic calculators perform operations sequentially as entered, not following mathematical order of operations. For example, entering 2 + 3 × 4 calculates (2 + 3) × 4 = 20, not 2 + (3 × 4) = 14. For complex expressions requiring proper order of operations, use a scientific calculator. Group calculations manually or break problems into steps.
Decimal Precision
Be aware that some divisions produce long or repeating decimals. 10 ÷ 3 gives 3.3333... which displays as 3.33 or similar depending on rounding. For precise fractional work like recipes or measurements, consider using a fraction calculator instead. Rounding errors can accumulate in long calculations with many decimal operations.
Check Your Work
Always verify calculator results for important calculations. Typos happen when clicking number buttons. If a result seems wrong, recalculate to confirm. Use the history feature to review your calculation sequence. For financial calculations, double-check decimal placement. Calculator errors are usually input mistakes, not calculation errors.
When to Use Basic vs Scientific
Basic calculators suit everyday arithmetic, shopping totals, bill splitting, and simple math homework. Scientific calculators handle trigonometry, logarithms, exponents, roots, and expressions requiring order of operations. Choose based on your needs. Basic calculators are faster and simpler for straightforward addition, subtraction, multiplication, and division without extra features getting in the way.
Frequently Asked Questions
Is this calculator free to use?
Yes, our basic calculator is completely free to use with no registration required. Access all features without any cost or limitations.
Can I use this calculator on mobile devices?
Absolutely! Our calculator is fully responsive and works perfectly on smartphones, tablets, and desktop computers.
Does the calculator save my calculation history?
Yes, the calculator maintains a history of your recent calculations during your current session. The history is cleared when you refresh the page or close the browser.
What operations can I perform?
You can perform basic arithmetic operations including addition (+), subtraction (-), multiplication (×), division (÷), percentage (%), and sign change (±).
How accurate are the calculations?
Our calculator uses JavaScript's built-in mathematical functions, providing accurate results for standard arithmetic operations within the limits of floating-point precision.
Can I clear individual entries?
Use the 'C' button to clear the entire calculator and start fresh. For more advanced editing features, consider using our Scientific Calculator.
Related Calculators
Scientific Calculator
Advanced mathematical functions including trigonometry, logarithms, and exponentials.
Percentage Calculator
Calculate percentages, percentage changes, and percentage of numbers easily.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.