Calculator
Simple and powerful calculator for everyday calculations
Privacy & Security
All calculations are performed entirely in your browser. Nothing is stored, tracked, or sent to any server. Your calculations are completely private.
About This Calculator
Our free online calculator provides all the basic functions you need for everyday math. Whether you're calculating bills, budgets, measurements, or homework, this calculator delivers instant results with a clean, easy-to-use interface. Works perfectly on desktop, tablet, and mobile devices.
Calculator Features
Basic Operations
Addition, subtraction, multiplication, and division with precision
Percentage Function
Calculate percentages quickly for discounts, tips, and taxes
Decimal Support
Handle decimal numbers with accuracy for precise calculations
Backspace Function
Easily correct mistakes without starting over
Clear Function
Reset your calculation instantly with one click
Keyboard Support
Use your keyboard for faster input and calculations
Mobile Responsive
Works flawlessly on phones, tablets, and computers
No Installation
Use instantly in your browser - no download or signup required
How to Use the Online Calculator
Enter Your First Number
Click number buttons or type using your keyboard to enter the first value
Select Operation
Choose the operation you want to perform: +, -, ×, or ÷
Enter Second Number
Input the second number for your calculation
Get Your Result
Press equals (=) to see the result instantly on the display
Calculator Tips & Tricks
- Use Keyboard Shortcuts: Numbers 0-9, operators +, -, *, /, Enter for equals, Backspace to delete
- Percentage Calculations: For 20% of 500, type: 500 × 20 % = Result: 100
- Quick Clear: Press 'C' to clear and start a fresh calculation anytime
- Chain Calculations: Continue calculating without resetting - results carry forward automatically
Frequently Asked Questions
Is this calculator free to use?
Yes! Our online calculator is completely free with no registration, no ads blocking the interface, and no hidden fees. Use it as many times as you need.
Can I use this calculator on my phone?
Absolutely! The calculator is fully responsive and works perfectly on smartphones, tablets, laptops, and desktop computers. It adapts to your screen size automatically.
Does it work offline?
Once the page loads, the calculator works entirely in your browser without needing an internet connection. Perfect for quick calculations anywhere.
How accurate is this calculator?
The calculator uses JavaScript's built-in math functions, providing accuracy up to 15-17 decimal places for most operations, which is more than sufficient for everyday calculations.
Can I use keyboard input?
Yes! You can type numbers and operators directly using your keyboard. Use number keys, +, -, *, / for operations, Enter for equals, and Backspace to delete.
What does the % button do?
The percentage button converts the current number to a percentage. For example, to find 20% of 500, type: 500 × 20 %, which gives you 100.
Common Uses for Our Calculator
- Calculate tips at restaurants quickly and accurately
- Split bills among friends or group expenses
- Figure out discounts and sale prices while shopping
- Calculate taxes, VAT, or GST on purchases
- Verify receipts and invoices for accuracy
- Help with homework and school assignments
- Budget planning and expense tracking
- Unit conversions and measurement calculations
Why Use Our Online Calculator?
Unlike phone calculators that require switching apps, our web calculator is instantly accessible from any browser. It's faster than opening a desktop app, more reliable than mental math, and more convenient than carrying a physical calculator. With a clean interface designed for speed and accuracy, it's the perfect tool for students, professionals, shoppers, and anyone who needs quick calculations throughout their day.