Basic Calculator

Perform everyday arithmetic calculations with standard percentage rules, memory storage, and instant history.

BASIC M
 
0

Standard Percentage Rules

  • Add Percentage (Tax/Markup):
    200 + 10% = 220 (Adds 10% of 200)
  • Subtract Percentage (Discount):
    200 − 10% = 180 (Subtracts 10% of 200)
  • Percentage of Value:
    200 × 10% = 20 (Computes 10% of 200)
  • Division by Percentage:
    200 ÷ 10% = 2,000 (Divides by 0.10)

Keyboard Shortcuts

0–9, . Input digits and decimal
+ − * / Arithmetic operations
Enter or = Calculate expression
Backspace Delete last digit (⌫)
Delete Clear entry (CE)
Escape All clear (AC)
%, (, ) Percentage and brackets

Memory Functions

  • MC (Memory Clear): Resets stored memory value to 0.
  • MR (Memory Recall): Recalls the stored number into current calculation.
  • M+ (Memory Add): Adds current display number to the stored memory.
  • M− (Memory Subtract): Subtracts current display number from memory.
  • MS (Memory Store): Saves active number into memory directly.