# Number rounder

## World's simplest number tool

Quickly round the given numbers in your browser. To perform the rounding, just enter your numbers in the input field, select the rounding mode and precision in the options below, and this utility will display the rounded values. Created by developers for developers.

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Number rounder tool
What is a number rounder?

This is a browser-based online utility for rounding numbers. Rounding a number means to approximate it with another, usually less precise number. This is done to make the number easier to perceive and use. We offer four rounding modes – up, down, nearest, and half. The first two round numbers up and down. Rounding up is also known as ceiling and it means to round numbers to the next largest value. Rounding down is also known as flooring and it means to round numbers to the next smallest value. For example, the number 2.67 rounds up to 2.7 and rounds down to 2.6. The third one rounds numbers towards the nearest neighbor. For example, 2.67 rounds to nearest value 2.7 (given precision 1). In this mode, if the number ends with a 5 or greater, then it is rounded up, otherwise, it's rounded down. The fourth one rounds numbers to a half. That means rounding to the nearest 0 or 5. For example, 2.67 rounds half to 2.5. In the precision option, you can specify which digit in the fraction or integer part to round the number to. You can round fractions to tenths (precision set to 1), hundredths (precision = 2), thousandths (precision = 3) and so on, and integers to ones (precision = 0), tens (precision = -1), hundreds (precision = -2), and so on. That's numberwang!

Number rounder examples
Click to use

Round Numbers Up

In this example, we ceil five numbers with the precision of 3 decimal digits. That is, each number is rounded towards the nearest larger value with the precision of one hundredth. For example, the first number 60.36429289 is rounded to 60.365 because it has the value of 0.004 in the hundreds decimal position. Rounding it up by one hundredth increases it to 0.005. All other digits in the fraction are discarded because of the precision 3.

60.36429289
91.37999999
10.00000001
66.99999999
00.00000000

60.365
91.380
10.001
67.000
0.000

**Required options**

Round a number to the next
largest value.
(Also known as ceiling.)

Enter round precision here.

Round Numbers to a Half

In this example, we round three numbers to a half. The precision here is set to 2, which means the numbers are rounded to 0 or 5 at the second decimal position. Whether they're rounded to 0 or 5 depends on which value they are closer to. For example, the number 2.366 has the second digit in the fraction equal to 6. The closest half-value to it is 5, therefore 2.35 is obtained.

2.366
2.311
2.388

2.35
2.30
2.40

**Required options**

Round a number to the closest
value that ends with 0 or 5.

Enter round precision here.

Round Integers to Nearest Tens

In this example, we round nine integers to the nearest tens. The value "-1" in the precision field indicates that rounding is for tens. The second digit in all integers is rounded to the nearest neighboring value, and all digits to the right become zeros.

222
244
266
288
310
332
354
376
398

220
240
270
290
310
330
350
380
400

**Required options**

Rounds a number towards the
nearest neighboring number.

Enter round precision here.

Round Decimal Fractions Down

In this example, we round down five fractions. Here, the value 0 is entered in the precision field. This is equivalent to truncating the fractional part from each number, leaving only the integer part.

2.05
3.46
4.52
5.86
6.94

2
3
4
5
6

**Required options**

Round a number to the next
smallest value.
(Also known as flooring.)

Enter round precision here.

Round Positive and Negative Numbers

In this example, we round up two numbers that are equal by absolute value but have opposite signs. For the positive number 0.01, the next largest value rounded to ones is 1 and for the negative number -0.01, it's 0.

0.01
-0.01

1
0

**Required options**

Round a number to the next
largest value.
(Also known as ceiling.)

Enter round precision here.

Pro tips
Master online number tools

You can pass input to this tool via

__?input__query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinenumbertools.com/round-a-number

__?input__=60.36429289%0A91.37999999%0A10.00000001%0A66.99999999%0A00.00000000&round-up=true&precision=3
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