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📐 Rounding Calculator
Enter Number
Rounding Type
Decimal Places
Significant Figures
Whole Number
Precision
Number of digits to round to (0 = whole number)
Rounding Rule
Standard (0-4 down, 5-9 up)
Round Up (Ceiling)
Round Down (Floor)
Half Up (0.5 rounds up)
Half Down (0.5 rounds down)
Calculate Rounded Result
Result
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Notes:
Supports both standard numbers and scientific notation (e.g. 1.23e5)
Significant figures count all non-zero digits and zeros between them
Whole number rounding ignores decimal places completely