Online Calculator
Free online calculator for basic and scientific calculations. Supports arithmetic operations, trigonometry, logarithms, and more. No installation required.
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About Online Calculator
Our free Online Calculator is a powerful and versatile tool designed for everyone - from students and professionals to anyone who needs quick calculations on the go. Whether you're balancing your checkbook, calculating tips, working on homework, or performing complex scientific computations, this calculator provides instant results with a clean, intuitive interface that prioritizes usability and efficiency.
This scientific calculator supports both basic arithmetic operations (addition, subtraction, multiplication, division) and advanced mathematical functions including trigonometry (sin, cos, tan), logarithms (log, ln), roots, powers, memory functions (M+, M-, MR, MC), and constants like ฯ (pi) and e. The enhanced features include a calculation history that stores your recent calculations, memory functions for multi-step calculations, and copy functionality to easily transfer results.
Perfect for students, engineers, scientists, financial professionals, and anyone who needs reliable calculations, this tool eliminates the need for a physical calculator while offering superior convenience features like comprehensive keyboard support, one-click result copying, and a scrollable history of your last 20 calculations. The calculator operates entirely in your browser with no data sent to servers, ensuring complete privacy and instant results. Best of all, it's completely free with no installation required - just open and calculate!
How to Use
- Use number buttons or keyboard (0-9) to input numbers
- Use operator buttons (+, โ, ร, รท) or keyboard keys (+, -, *, /)
- Press "=" or Enter to calculate the result
- Use "AC" or Escape to clear all, "โซ" or Backspace to delete last digit
- Use memory functions (M+, M-, MR, MC) for multi-step calculations
- Click scientific buttons (sin, cos, โ, etc.) for advanced math functions
- Click "๐ Copy" to copy the result, or view history to reuse previous results
Frequently Asked Questions
What operations does this calculator support?
Basic arithmetic (addition, subtraction, multiplication, division, percentage, negation), scientific functions (trigonometry, logarithms, square roots, powers, reciprocals), memory functions (M+, M-, MR, MC), and constants (ฯ, e). Everything you need for everyday calculations.
How do memory functions work?
MC clears memory, MR recalls stored value, M+ adds current value to memory, and M- subtracts current value from memory. The "M" indicator appears when memory contains a value. Perfect for multi-step calculations and running totals.
Can I see my previous calculations?
Yes! Click "๐ Calculation History" to view your last 20 calculations. You can click any history item to reuse that result in a new calculation. History is stored temporarily during your session and cleared when you refresh the page.
What keyboard shortcuts are available?
Number keys (0-9), operators (+, -, *, /), Enter or "=" for equals, Escape to clear, Backspace to delete, "%" for percentage, and "C" to clear. Full keyboard support makes calculations much faster for power users.
How do I copy the result?
Click the "๐ Copy" button next to the display to instantly copy the current result to your clipboard. A "โ Copied!" confirmation will appear briefly. Paste the result anywhere with Ctrl+V (Windows) or Cmd+V (Mac).
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Features
- 100% Free
- No registration required
- Fast processing
- Secure & private