A basic calculator performs arithmetic operations: addition, subtraction, multiplication, division, and percentage calculations. Our online calculator also supports keyboard input, memory functions, and calculation history — useful for quick daily calculations without switching apps.
How to calculate percentage on a calculator?▼
Enter the number, press ÷ or ×, enter 100, press % or =. Example: 18% of ₹5000 = enter 5000 × 18 ÷ 100 = 900. Or: enter 5000, press ×, enter 18, press % button directly.
Free Online Calculator for All Calculations
CalcuTools' simple online calculator performs all basic arithmetic operations: addition, subtraction, multiplication, division, and percentage calculations. Works on mobile and desktop without any download or installation. Supports keyboard input for faster calculations. Results are accurate up to 10 decimal places.
Keyboard Shortcuts for Faster Calculation
Use your keyboard for speed: Number keys (0-9) for digits, + - * / for operations, Enter or = for result, Escape or C to clear, Backspace to delete last digit. The keyboard shortcut support makes this calculator faster than a physical calculator for most calculations.
When to Use Simple vs Scientific Calculator
Use the simple calculator for: daily arithmetic, bill splitting, tip calculation, basic percentage, shopping discounts. Use our scientific calculator for: trigonometry (sin, cos, tan), logarithms, powers and roots, factorial, engineering calculations. For financial calculations like EMI, SIP, tax — use our specialized Indian financial calculators.
Frequently Asked Questions
How to calculate percentage on a calculator?▼
To find X% of Y: multiply Y × X ÷ 100. Example: 18% of ₹5,000 = 5000 × 18 ÷ 100 = ₹900. Or use our dedicated percentage calculator for multiple types of percentage problems.
How do I calculate GST on this calculator?▼
To add 18% GST: multiply the base price × 1.18. Example: ₹10,000 + 18% GST = 10,000 × 1.18 = ₹11,800. For GST-specific calculations with CGST/SGST split, use our dedicated GST calculator.