Rounding Numbers Calculator

Rounded Result

Rounding Rules

How to Round Numbers:

  1. Look at the digit to the right of the place you want to round to
  2. If that digit is 5 or greater, round up
  3. If that digit is less than 5, round down
  4. Replace all digits to the right with zeros (or remove them for decimals)

Examples:

Round to whole number:
  • 3.4 → 3 (4 < 5, round down)
  • 3.6 → 4 (6 ≥ 5, round up)
  • 3.5 → 4 (5 = 5, round up)
Round to 1 decimal place:
  • 3.47 → 3.5 (7 ≥ 5, round up)
  • 3.43 → 3.4 (3 < 5, round down)
  • 3.45 → 3.5 (5 = 5, round up)