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Integer adder

World's simplest integer tool
This browser-based utility adds all the given integers and prints their sum in the output. You can immediately calculate the total of multiple integers or enable partial sum mode and follow the summation process step by step. Each integer should be put on its own line but you can customize the integer separator in the options. Created by math nerds from team Browserling.
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Integer Separator
Input any text with integers and the program will automatically recognize them and add them.
Input a well-formed list of integers and specify the separator that appears between them in the option below.
Separator of input integers.
Partial Sums
Output the running sum, adding the current integer to the preceding integers.
Sum Terms
Display all the integer terms one by one when calculating the sum.

What is a integer adder?

learn more about this tool
With this online application, you can calculate the sum of integers. There's no limit to how many values you can sum up at once as it works with ten, hundred, and even thousand values. There's also no limit to the integer length. They can be very, very large up to one million digits or as tiny as single digit integers. The program can automatically identify all the integers in the given text file. For example, if the text is "6 kittens and 10 puppies", the program will output the sum of both integers 6 and 10 on the screen as 16 (6 + 10). The tool also allows you to manually set a character delimiter for the integers if the input list has a specific format. For instance, for a list of integers "5, 10, 20, 30", you can choose the "Separate Integers by a Symbol" mode, specify the comma symbol in the options, and get the output sum as 5 + 10 + 20 + 30 = 65. Another useful option is the "Show Partial Sums". It shows the partial sum as the total sum is computed. The partial sum shows the sum up to the current integer, which includes all preceding integers. For example, if you have a list of values 5, 10, 20, 30, then with the partial sum option active, you'll get 5, 15 (5 + 10), 35 (5 + 10 + 20), 65 (5 + 10 + 20 + 30). To see the sequence of terms that make up the sum in the output, you can enable the "Output Sum Terms" option. Integerabulous!

Integer adder examples

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Sum of 1 to 100
In this example, we find the total of adding the first one hundred natural numbers. We paste a sequence of comma-separated integers from 1 to 100 in the input, and the webapp adds them in this way: 1 + 2 + 3 + 4 + … + 100. In the output, it displays the sum, which is equal to 5050. We also set the separator to the comma symbol to correctly split the sequence into individual integers.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100
5050
Required options
These options will be used automatically if you select this example.
Input a well-formed list of integers and specify the separator that appears between them in the option below.
Separator of input integers.
Output the running sum, adding the current integer to the preceding integers.
Display all the integer terms one by one when calculating the sum.
Count a Number of Puppies in Text
This example automatically finds and extracts integers from the given text via the "Smart Integer Detection" option. It calculates the sum of newborn puppies in an animal shelter and displays the value 10 (3 + 5 + 2) on the screen.
We have 3 black puppies, 5 spotted puppies, and 2 gray puppies.
10
Required options
These options will be used automatically if you select this example.
Input any text with integers and the program will automatically recognize them and add them.
Output the running sum, adding the current integer to the preceding integers.
Display all the integer terms one by one when calculating the sum.
Alternating Signs Sum
This example sums a list of eight integers with alternating signs. The first integer is positive, the second is negative, the third is positive, and so on. Each list item is written on a separate line, so we use the character "\n" that denotes a newline in the list item delimiter option. Since the absolute value of negative integers is greater than the absolute value of positive integers, we get a negative sum equal to -10000.
10 -1010 20 -2020 30 -3030 40 -4040
-10000
Required options
These options will be used automatically if you select this example.
Input a well-formed list of integers and specify the separator that appears between them in the option below.
Separator of input integers.
Output the running sum, adding the current integer to the preceding integers.
Display all the integer terms one by one when calculating the sum.
Count the Number of Development Hours
In this example, we calculate the number of development hours for a new Internet project. Since we already have a list of task estimates with approximate development hours, we simply load this list as the input. By enabling the smart integer detection algorithm, the program calculates the sum of all the hour values in the text and displays the final sum on the screen. Along with the sum, it also prints a formula with all the terms that were summed up because the "Output Sum Terms" option is active.
Requirements Gathering: 20 hours Design and Wireframing: 40 hours Front-end Development: 80 hours Back-end Development: 60 hours Database Integration: 20 hours Testing and Quality Assurance: 40 hours Content Creation and Integration: 30 hours Deployment and Launch: 10 hours Bug Fixes and Tweaks: 20 hours Documentation: 10 hours
330 (20 + 40 + 80 + 60 + 20 + 40 + 30 + 10 + 20 + 10)
Required options
These options will be used automatically if you select this example.
Input any text with integers and the program will automatically recognize them and add them.
Output the running sum, adding the current integer to the preceding integers.
Display all the integer terms one by one when calculating the sum.
Integer Partial Sum
In this example, we enable the "Show Partial Sums" option to see how the sum changes as every next integer is added to the previous ones. Initially, the partial sum value is equal to the first integer and is equal to 100. The second partial sum is calculated by adding the second integer to the first partial sum so now it's 100 + (-45) = 55. Then the third integer is added to the previous partial sum and we get 55 + (-30) = 25. This continues until all integers are added. Each partial result is displayed on a new line, and the last value is the total sum of all integers.
100 -45 -30 -15 -5 -3 -2
100 55 25 10 5 2 0
Required options
These options will be used automatically if you select this example.
Input a well-formed list of integers and specify the separator that appears between them in the option below.
Separator of input integers.
Output the running sum, adding the current integer to the preceding integers.
Display all the integer terms one by one when calculating the sum.
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://onlineintegertools.com/add-integers?input=1%2C%202%2C%203%2C%204%2C%205%2C%206%2C%207%2C%208%2C%209%2C%2010%2C%2011%2C%2012%2C%2013%2C%2014%2C%2015%2C%2016%2C%2017%2C%2018%2C%2019%2C%2020%2C%2021%2C%2022%2C%2023%2C%2024%2C%2025%2C%2026%2C%2027%2C%2028%2C%2029%2C%2030%2C%2031%2C%2032%2C%2033%2C%2034%2C%2035%2C%2036%2C%2037%2C%2038%2C%2039%2C%2040%2C%2041%2C%2042%2C%2043%2C%2044%2C%2045%2C%2046%2C%2047%2C%2048%2C%2049%2C%2050%2C%2051%2C%2052%2C%2053%2C%2054%2C%2055%2C%2056%2C%2057%2C%2058%2C%2059%2C%2060%2C%2061%2C%2062%2C%2063%2C%2064%2C%2065%2C%2066%2C%2067%2C%2068%2C%2069%2C%2070%2C%2071%2C%2072%2C%2073%2C%2074%2C%2075%2C%2076%2C%2077%2C%2078%2C%2079%2C%2080%2C%2081%2C%2082%2C%2083%2C%2084%2C%2085%2C%2086%2C%2087%2C%2088%2C%2089%2C%2090%2C%2091%2C%2092%2C%2093%2C%2094%2C%2095%2C%2096%2C%2097%2C%2098%2C%2099%2C%20100&use-number-delimiter=true&input-separator=%2C%20&running-sum=false&show-sum-details=false
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Delete Integer Digits
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Replace Integer Digits
Quickly replace one or more digits in an integer.
Truncate Integers
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Add Commas to an Integer
Quickly add the thousands separator to integers.
Remove Commas from an Integer
Quickly remove the thousands separator from integers.
Find the Max Integer
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Find the Min Integer
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Quickly find the total sum of a bunch of integers.
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Quickly find the sum of all the digits in an integer.
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Find the Running Total
Quickly calculate the partial sum of a bunch of integers.
Find the Running Product
Quickly calculate the partial product of a bunch of integers.
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Quickly flip the sign of one or more integers.
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Quickly split an integer into chunks of a given length.
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Quickly merge partial integers together to form a larger integer.
Round Integers
Quickly round integers up or down to the required precision.
Create an Image from Integers
Quickly convert integers to a downloadable picture.
Generate von Neumann Ordinals
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Generate Zermelo Ordinals
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Enumerate Integers
Quickly generate an ordered sequence of integers.
Print Even Integers
Quickly generate an ordered list of even integers.
Print Odd Integers
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Convert Integers to Words
Quickly write an integer spelling in words.
Convert Words to Integers
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Create an Integer Array
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Analyze Integers
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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
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Convert Base64 to Integers
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Change Integer Base
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Convert Integers to HTML Entities
Quickly encode integers to HTML encoding.
Convert HTML Entities to Integers
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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
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Create Random Integers
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Check if an Integer is Symmetric
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Generate an Integer Matrix
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Generate an Integer Vector
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Find Integer Average
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Find Integer Digit Average
Quickly calculate the average value of integer digits.
Pick an Integer Digit
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Compare Integers
Find which of the given integers is the biggest or smallest.
Clamp Integers
Limit integer values to a range.
Clamp Integer Digits
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Duplicate Integers
Create multiple copies of the input integers.
Duplicate Integer Digits
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Rotate Integers
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Shift Integer Digits
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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
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Divide Integer Digits
Quickly divide the digits of an integer.
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Filter Integers
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Left-pad Integers
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Right-pad Integers
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Right-align Integers
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Center Integers
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Take Absolute Value of Integers
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Make All Integers Negative
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Convert Integers to Fractions
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Convert Fractions to Integers
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Find and Replace Integers
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Generate Integers from a Regex
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Generate Big Integers
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Calculate Integer Entropy
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