Rounding Calculator

Round numbers any way you need

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Full guide

How to Round Numbers Correctly

Learn decimal-place rounding, significant figures, floor and ceiling, truncation, and bankers rounding — plus when finance and science need different rules.

Read the guide

About Rounding Calculator

A rounding calculator that rounds numbers to any decimal place or whole number increment. Supports standard rounding, floor (round down), ceiling (round up), banker's rounding (round half to even), and truncation. Shows all rounding modes side by side. All calculations are client-side. Essential for financial calculations, scientific measurements, and programming.

Rounding Calculator Features

  • All rounding modes
  • Custom places
  • Floor/ceil/trunc
  • Banker's rounding
  • Side-by-side

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