Rounding Calculator
Round numbers with precision using various methods
Rounding Calculator
Round numbers to any decimal place, fraction, or whole number using various rounding methods including nearest, up, down, or to even/odd.
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Other Rounding Examples
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What is Rounding?
Rounding involves replacing a number with an approximation that has a shorter, simpler, or more explicit representation based on specific rounding definitions.
Common Methods
The most common methods include rounding to nearest, rounding up (ceiling), rounding down (floor), and various half-value tie-breaking rules.
Precision Levels
You can round to different precision levels: whole numbers, decimal places, or even to specific fractions like 1/8 or 1/16.
Rounding Methods Explained
Round Half Up
This is one of the most common rounding methods. It rounds halfway values up to the next integer. For example, 5.5 rounds to 6, and -5.5 rounds to -5 (towards positive infinity).
Round Half Down
Similar to rounding half up, but rounds halfway values down instead. For example, 5.5 rounds to 5, and -5.5 rounds to -6 (towards negative infinity).
Round Up (Ceiling)
Always rounds towards positive infinity. Any non-integer value is rounded up to the next highest integer.
Round Down (Floor)
Always rounds towards negative infinity. Any non-integer value is rounded down to the next lowest integer.
Round Half to Even
Also known as "banker's rounding", this method rounds half values to the nearest even integer, providing a statistically unbiased rounding method.