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Integer Rounder

World's Simplest Integer Tool

This browser-based application rounds one or more integers and returns their approximated values in the output. You can adjust the rounding precision in the options and round integers to ones, tens, hundreds, thousands, or any other place value. You can also switch between rounding methods and round integers up, down, to the nearest integer, or to the nearest half. Created by math nerds from team Browserling.

Integer Rounder

World's Simplest Integer Tool

This browser-based application rounds one or more integers and returns their approximated values in the output. You can adjust the rounding precision in the options and round integers to ones, tens, hundreds, thousands, or any other place value. You can also switch between rounding methods and round integers up, down, to the nearest integer, or to the nearest half. Created by math nerds from team Browserling.

᠎᠎᠎          Tool Options

Rounding Methods

Rounding up towards the
nearest larger integer.
Rounding down towards the
nearest smaller integer.
Rounding towards closest integer.
Rounding to the nearest
digit 5 or 0.

Rounding Examples

Round Up (Ceil):
186 → 190
143 → 150
Round Down (Floor):
186 → 180
143 → 140
Round to Nearest Integer:
186 → 190
143 → 140
Round to a Half:
186 → 200
143 → 150

Rounding Precision

Round integers to this place value.
Set the custom precision here.
The custom rounding precision
should be a power of ten, such
as 100 (to round to hundreds),
1000 (thousands), 10000, etc.

What Is an Integer Rounder?

With this quick webapp, you can round off integers to ones, tens, hundreds, thousands, and more place values. Rounding an integer makes it simpler to interpret and work with as the less significant digits (on the right side) are turned into zeros. For example, you can round the integer 521 to tens and get 520, or round the value 2590 to hundreds and get 2600. These two examples use a rounding method that is called "Round to the Nearest Integer". As you can see in the first case after rounding, the digit 2 (in tens position) remained as it was but the digit 1 (in unit position) got dropped and converted to 0. In the second integer, the digit 5 (in hundreds position) was turned into the digit 6 and digits in tens and ones positions got dropped. The rounding in these examples followed this rule – if the dropping digit is in the range from 0 to 4, then the more significant digit (to the left) remains unchanged. If the discarded digit is between 5 and 9, then the more significant digit is increased by 1. You can also switch to the "Round Up (Ceil)" mode or "Round Down (Floor)" in the options and always round an integer to the nearest higher or lower value. For example, rounding 521 up to tens will produce 530 but rounding the same integer 521 down to tens will produce 520. The last rounding method is "Round to a Half". It's very similar to rounding to the nearest integer but here the nearest integer also includes any integer ending in 5. If the dropping digit is 0, 1, or 2, then the action is to round the integer down. If the dropping digit is 8, or 9, then the action is to round the integer up. If the dropping digit is 3, 4, 5, 6, or 7, then the action is to change the dropping digit to 5. For example, the integer 122 will be half-rounded to 120, the integer 123 will be half-rounded to 125, and the integer 128 will be half-rounded to 130. After choosing the rounding mode, you can specify the integer precision. You can round your integers to ones, tens, hundreds, thousands, or other precision. The utility also supports custom rounding precision. You can select the custom precision mode and enter the accuracy as a power of ten. For example, 10000 (round to ten thousands), 1000000000 (round to billions). As an extra feature, you can also round integers with a decimal part. For example, if you enter 0.001 in the custom precision, then the input value will be rounded to 3 decimal places. Integerabulous!

What Is an Integer Rounder?

With this quick webapp, you can round off integers to ones, tens, hundreds, thousands, and more place values. Rounding an integer makes it simpler to interpret and work with as the less significant digits (on the right side) are turned into zeros. For example, you can round the integer 521 to tens and get 520, or round the value 2590 to hundreds and get 2600. These two examples use a rounding method that is called "Round to the Nearest Integer". As you can see in the first case after rounding, the digit 2 (in tens position) remained as it was but the digit 1 (in unit position) got dropped and converted to 0. In the second integer, the digit 5 (in hundreds position) was turned into the digit 6 and digits in tens and ones positions got dropped. The rounding in these examples followed this rule – if the dropping digit is in the range from 0 to 4, then the more significant digit (to the left) remains unchanged. If the discarded digit is between 5 and 9, then the more significant digit is increased by 1. You can also switch to the "Round Up (Ceil)" mode or "Round Down (Floor)" in the options and always round an integer to the nearest higher or lower value. For example, rounding 521 up to tens will produce 530 but rounding the same integer 521 down to tens will produce 520. The last rounding method is "Round to a Half". It's very similar to rounding to the nearest integer but here the nearest integer also includes any integer ending in 5. If the dropping digit is 0, 1, or 2, then the action is to round the integer down. If the dropping digit is 8, or 9, then the action is to round the integer up. If the dropping digit is 3, 4, 5, 6, or 7, then the action is to change the dropping digit to 5. For example, the integer 122 will be half-rounded to 120, the integer 123 will be half-rounded to 125, and the integer 128 will be half-rounded to 130. After choosing the rounding mode, you can specify the integer precision. You can round your integers to ones, tens, hundreds, thousands, or other precision. The utility also supports custom rounding precision. You can select the custom precision mode and enter the accuracy as a power of ten. For example, 10000 (round to ten thousands), 1000000000 (round to billions). As an extra feature, you can also round integers with a decimal part. For example, if you enter 0.001 in the custom precision, then the input value will be rounded to 3 decimal places. Integerabulous!


Integer Rounder Examples

Click to try!
click me

Rounding to Nearest Tens

This example loads a list of integers from 100 to 110 as the input data and rounds them to tens. It uses the rounding method that rounds them to the nearest integer. This means that if the last digit is from 0 to 4, then they are rounded down, and if the last digit is from 5 to 9, then they are rounded up. In the output, we get only two different integers 100 and 110, which are approximate values of input integers with an accuracy of ten.

100 101 102 103 104 105 106 107 108 109 110
100 100 100 100 100 110 110 110 110 110 110
Required options
These options will be used automatically if you select this example.
Rounding towards closest integer.
Round integers to this place value.
click me

Rounding Money Up

In this example, we use a rounding algorithm that gets rid of the coin part in different currencies. As currencies have the integer part and the fractional part, we choose the round-to-one rounding method. As a result, the program discards the decimal part of each money amount, leaving only the integer part of the amount. In the rounding up method, the presence of at least one coin in the amount bumps up the banknote value by one.

12.5$, 30.4€, 199.9₩, 56.01¥, 66.66£
13$, 31€, 200₩, 57¥, 67£
Required options
These options will be used automatically if you select this example.
Rounding up towards the
nearest larger integer.
Round integers to this place value.
click me

Round Ocean Areas

In this example, we're working with data that shows the names of all oceans and their physical area in square kilometers. The area has the precision of up to one thousand km but we'd like to work with simpler numbers and have a precision of ten million. With this tool, we can easily do it and round the integer areas in the data in-place without even having to extract them. We select the round down method and switch to custom precision mode. We enter the value 10000000 in the place value options, which means rounding with an accuracy of ten million.

Pacific Ocean – 155557000 Atlantic Ocean – 76762000 Indian Ocean – 68556000 Southern Ocean – 20327000 Arctic Ocean – 14056000
Pacific Ocean – 150000000 Atlantic Ocean – 70000000 Indian Ocean – 60000000 Southern Ocean – 20000000 Arctic Ocean – 10000000
Required options
These options will be used automatically if you select this example.
Rounding down towards the
nearest smaller integer.
Round integers to this place value.
Set the custom precision here.

Pro tips Master online integer 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://onlinetools.com/integer/round-integers?input=100%0A101%0A102%0A103%0A104%0A105%0A106%0A107%0A108%0A109%0A110&round-to-nearest=true&precision=round-to-tens

All Integer Tools

Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!
Quickly rewrite integer digits using pretty Unicode glyphs.
Quickly generate random two-dimensional integer points.
Quickly generate random three-dimensional integer points.
Quickly print a list of integers that are palindromes.
Quickly convert the given integer to a palindromic integer.
Quickly find all integers in the given text or string.
Quickly make integer digits go in a triangle wave.
Quickly unleash the destructive force of Zalgo on integers.
Quickly find two or more integers that add up to the given integer.
Quickly find several integers that multiply up to the given integer.
Quickly randomize the given sequence of integers.
Quickly mix the order of digits in an integer.
Quickly put integers in increasing or decreasing order.
Quickly sort the individual digits of an integer.
Quickly increase all integers by a certain amount.
Quickly increase individual digits by a certain amount.
Quickly decrease all integers by a certain amount.
Quickly decrease individual digits by a certain amount.
Quickly randomly select an integer from a list of integers.
Quickly create groups from the digits of an integer.
Quickly write integer digits backwards.
Quickly remove one or more digits from an integer.
Quickly replace one or more digits in an integer.
Quickly drop digits from an integer and make it shorter.
Quickly add the thousands separator to integers.
Quickly remove the thousands separator from integers.
Quickly find the largest integer in a list of integers.
Quickly find the smallest integer in a list of integers.
Quickly find the total sum of a bunch of integers.
Quickly find the sum of all the digits in an integer.
Quickly find the total product of a bunch of integers.
Quickly find the product of all the digits in an integer.
Quickly calculate the partial sum of a bunch of integers.
Quickly calculate the partial product of a bunch of integers.
Quickly flip the sign of one or more integers.
Quickly split an integer into chunks of a given length.
Quickly merge partial integers together to form a larger integer.
Quickly round integers up or down to the required precision.
Quickly convert integers to a downloadable picture.
Quickly generate a list of von Neumann ordinals.
Quickly generate a list of Zermelo ordinals.
Quickly generate an ordered sequence of integers.
Quickly generate an ordered list of even integers.
Quickly generate an ordered list of odd integers.
Quickly write an integer spelling in words.
Quickly convert spelled integers to regular integers with digits.
Quickly generate an array of integers for programming.
Quickly find the number of occurrences of digits in integers.

Coming Soon

These integer tools are on the way!
Draw von Neumann Universe

Create a drawing that visualizes von Neumann hierarchy of sets.

Generate a Sudoku Board

Create a sudoku puzzle.

Generate Magic Integers

Create a list of neat-looking integers (called magic integers).

Create Integer n-Tuples

Generate a list of tuples of integers with n elements.

Convert Integers to Unary Base

Quickly convert integers to base one.

Convert Unary Base to Integers

Quickly convert base one to integers.

Convert Integers to Binary Base

Quickly convert integers to base two.

Convert Binary Base to Integers

Quickly convert base two to integers.

Convert Integers to Octal Base

Quickly convert integers to base eight.

Convert Octal Base to Integers

Quickly convert base eight to integers.

Convert Integers to Hex Base

Quickly convert integers to base sixteen.

Convert Hex Base to Integers

Quickly convert base sixteen to integers.

Convert Integers to Base64

Quickly encode integers to base-64.

Convert Base64 to Integers

Quickly decode base-64 to integers.

Change Integer Base

Quickly convert integers to a custom base.

Convert Integers to HTML Entities

Quickly encode integers to HTML encoding.

Convert HTML Entities to Integers

Quickly decode HTML entities to integers.

Convert Integers to URL Encoding

Quickly encode integers to URL (percent) encoding.

Convert URL Encoding to Integers

Quickly decode URL-encoded integers.

Convert Signed Integer to Unsigned

Quickly convert a signed integer to an unsigned integer.

Convert Unsigned Integer to Signed

Quickly convert an unsigned integer to a signed integer.

Create Random Integers

Generate a list of random integers.

Check If an Integer Is Symmetric

Check if the given integers are palindromes.

Generate an Integer Matrix

Create a matrix whose entries are all integers.

Generate an Integer Vector

Create a vector with integer coefficients.

Find Integer Average

Quickly calculate the average value of integers.

Find Integer Digit Average

Quickly calculate the average value of integer digits.

Pick an Integer Digit

Quickly randomly select a digit from an integer.

Compare Integers

Find which of the given integers is the biggest or smallest.

Clamp Integers

Limit integer values to a range.

Clamp Integer Digits

Limit integer digit values to a range.

Duplicate Integers

Create multiple copies of the input integers.

Duplicate Integer Digits

Create multiple copies of digits of input integers.

Rotate Integers

Rotate the digits of an integer to the left or right.

Shift Integer Digits

Move the digits of an integer to the left or right.

Subtract Integers

Quickly find the difference of a bunch of integers.

AND Integers

Quickly apply the bitwise AND operation to integers.

OR Integers

Quickly apply the bitwise OR operation to integers.

XOR Integers

Quickly apply the bitwise XOR operation to integers.

NOT Integers

Quickly apply the bitwise NOT operation to integers.

NAND Integers

Quickly apply the bitwise NAND operation to integers.

NOR Integers

Quickly apply the bitwise NOR operation to integers.

XNOR Integers

Quickly apply the bitwise NXOR operation to integers.

Divide Integers

Quickly divide two or more integers.

Divide Integer Digits

Quickly divide the digits of an integer.

Convert an Integer to Ordinal

Add -st, -nd, -rd, -th suffixes to integers to make them ordinals.

Convert an Oridinal to Integer

Remove -st, -nd, -rd, -th suffixes from ordinals to make them ints.

Filter Integers

Find integers that match a filter (greater, less, equal).

Left-pad Integers

Add padding to integers on the left side.

Right-pad Integers

Add padding to integers on the right side.

Right-align Integers

Position all integers so that they align on the right.

Center Integers

Position all integers so that they align in the middle.

Take Absolute Value of Integers

Turn all integers into positive integers.

Make All Integers Negative

Turn all integers into negative integers.

Convert Integers to Fractions

Rewrite an integer in fractional form.

Convert Fractions to Integers

Extract the numerator and denominator from a fraction.

Find and Replace Integers

Search for all occurrences of an integer and replace it.

Generate Regex from Integers

Create a regex that matches the given integers.

Generate Integers from a Regex

Create integers that match the given regular expression.

Generate Small Integers

Create relatively tiny integers.

Generate Big Integers

Create relatively huge integers.

Generate Oscillating Integers

Create a sequence of oscillating integers, such as 123212321.

Generate a Multi-integer Sequence

Create multiple integer sequences at once.

Introduce Errors in Integers

Slightly change an integer so it has an error.

Introduce Errors in Integer Digits

Slightly change integer digits so there are errors.

Make Integers Fuzzy

Apply fuzzing to integers and add perturbations.

Make Integers Digits Fuzzy

Apply fuzzing to integer digits and add digit perturbations.

Highlight Integers

Add highlighting to certain integers.

Highlight Integer Digits

Add highlighting to certain integer digits.

Color Integers

Add color to integers based on a condition.

Color Integer Digits

Add color to individual digits in the given integers.

Convert Integers to Pixels

Quickly assign colors to integers and draw them as pixels.

Convert Pixels to Integers

Quickly assign integer values to pixel colors and print them.

Draw an Integer Spiral

Make the digits of an integer go in a spiral shape.

Draw an Integer Circle

Make the digits of an integer go in a circle.

Draw an Integer Diamond

Make the digits of an integer go in a diamond shape.

Draw an Integer Box

Fill a box with certain width and height with digits.

Create 2D Integers

Use ASCII art to convert integers to 2-dimensional drawings.

Create 3D Integers

Use ASCII art to convert integers to 3-dimensional drawings.

Decompose an Integer

Decompose an integer into ones, tens, hundreds, etc.

Print Increasing Integers

Generate an ordered list of increasing integers.

Print Decreasing Integers

Generate an ordered list of decreasing integers.

Print Integer Information

Quickly find various information about the given integers.

Find Patterns in Integers

Find hidden patterns of numbers in integers.

Calculate Integer Entropy

Find the Shannon entropy of an integer.


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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling our mission is to make people's lives easier, so we created this collection of integer tools. Our tools have the simplest user interface that doesn't require advanced computer skills and they are used by millions of people every month. Our integer tools are actually powered by our programming tools that we created over the last couple of years. Check them out!

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