Rounding Converter
Round numbers using different rounding methods
Rounding Methods Explained
Round (Half Up)
Rounds to nearest; .5 rounds up (2.5 → 3)
Floor
Always rounds toward negative infinity (2.9 → 2, -2.1 → -3)
Ceiling
Always rounds toward positive infinity (2.1 → 3, -2.9 → -2)
Truncate
Removes decimal part, rounds toward zero (2.9 → 2, -2.9 → -2)
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: NIST Guide to SI Units
by National Institute of Standards
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.