Rounding Calculator: Whole Numbers & Decimal Precision

Round any positive or negative number to the nearest integer, power-of-ten places (ones to billions), and decimal places (tenths to millionths). Perfect for students, engineers, and quick approximations.

Rounding Rules: Identify the digit in the target place. Look at the digit immediately to its right.

If that digit is 5 or greater, round up (increase target digit by 1).
If that digit is less than 5, round down (keep target digit unchanged).
For negative numbers, apply the same absolute-value rounding, then restore sign.

Examples: \( 1234.5678 \) → nearest hundred: \(1200\), nearest hundredth: \(1234.57\). \( 9,999,999 \) → nearest million: \(10,000,000\).

Round to Whole Number Places

Round to Decimal Places (Precision)

⚡ Step-by-step rounding insight: Click calculate to see each rounding rule applied.

Rounding Calculator: Whole Numbers & Decimal Precision

Round to Whole Number Places

Round to Decimal Places (Precision)

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