Rounding Calculator
Round numbers to decimal places, nearest values, or use ceiling, floor, and truncate methods. See step-by-step rounding explanations.
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Rounding Calculator - Multiple Methods
Round numbers using standard rounding, ceiling, floor, truncate, or to the nearest value. See detailed steps and understand different rounding methods. Essential for data analysis, finance, and everyday calculations.
What is Number Rounding?
Rounding reduces the number of digits while keeping the value close to the original. Standard rounding looks at the next digit: if 5 or more, round up; if less than 5, round down. Other methods include ceiling (always up), floor (always down), and truncate (toward zero).
Standard Rounding Rule
If digit ≥ 5, round up; if digit < 5, round downHow to Use This Calculator
Rounding Applications
Financial Calculations
Round currency values to cents or whole dollars.
Data Analysis
Simplify numbers for reports and presentations.
Pricing
Round prices to psychological price points.
Measurements
Express measurements with appropriate precision.
Frequently Asked Questions
Floor always rounds toward negative infinity (down for positive, more negative for negative numbers). Truncate rounds toward zero (removes decimals). For positive numbers they're the same, but floor(-2.5)=-3 while trunc(-2.5)=-2.