Free Online Calculator for All Math Operations

no hidden fees. Use it unlimited times on any device. Does the calculator follow order of operations (PEMDAS)? Yes. Our calculator correctly applies PEMDAS/BODMAS: Parentheses → Exponents → Multiplication/Division → Addition/Subtraction. Can I use keyboard input? Yes! Use number keys (0–9)， tax， Frequently Asked QuestionsIs this math calculator free to use? Yes， Enter or = to calculate， 100% free. No registration， -， Backspace to delete， *，。

operators (+， no subscription， decimal point (.)， enter 15， press +， /)， press % — the result is 575 (500 + 15% of 500). Perfect for calculating discounts， and Escape to clear all. What happens if I divide by zero? Division by zero is mathematically undefined. The calculator will display an "Error: Cannot divide by zero" message to protect you from an incorrect result. How does the percentage (%) button work? Press % to divide the current number by 100. For example: enter 500， and tips. 。