Free online binary sum calculator. Just load your binary values and they will automatically get added together. There are no ads, popups or nonsense, just an awesome binary adder. Load binary values – get a binary sum. Created for developers by developers from team Browserling.

This utility calculates the sum of binary numbers in your browser. You can input as many binary numbers as you like. By default, numbers can be entered one per line but if your numbers are separated by another symbol, then you can adjust it in the input settings options. The input numbers can be of any length but they can only contain 0's and 1's. The length of the output sum can be changed via the output padding option. You can also add a binary prefix or postfix indicator to the output number and display the decimal value of the binary number in parentheses next to it. If you're adding several binary numbers at once, you can use the option that displays their progressive summation. Simple and easy!

Click to try!

This example adds together two nine-digit binary numbers. The result overflows and you get a ten-digit number as their sum.

111111111
000000001

1000000000

Specify the character to split

the input binary numbers.

the input binary numbers.

Output padding length – add

zeros before the binary.

zeros before the binary.

Add a binary prefix or

postfix to the number.

postfix to the number.

Display binary number's

decimal value next to it.

decimal value next to it.

If multiple numbers are being

summed, then output their

partial sum.

summed, then output their

partial sum.

This example calculates the sum of a bunch of binary numbers. They are entered as a comma-separated list, so we adjust the input delimiter to be the comma character. We also set the desired output length to be 8 and add a lowercase binary prefix "0b" before the output.

0001, 0001, 0001, 0001, 0001, 0001, 0001, 0001

0b00001000

Specify the character to split

the input binary numbers.

the input binary numbers.

Output padding length – add

zeros before the binary.

zeros before the binary.

Add a binary prefix or

postfix to the number.

postfix to the number.

Display binary number's

decimal value next to it.

decimal value next to it.

If multiple numbers are being

summed, then output their

partial sum.

summed, then output their

partial sum.

In this example, we wanted to see how the sum progresses as we sum the first ten binary numbers. To do that, we activated the option "Print Running Sum", which displays all partial sums of the addition process as it happens. As you can see, the first partial sum is 1, the second is 3 (1+2), the third is 6 (1+2+3), etc. We also specified the output padding length of 10, added a subscript binary postfix "₂", and printed decimal values next to binary numbers so that we knew what was happening at each step.

1
10
11
100
101
110
111
1000
1001
1010

0000000001₂ (1)
0000000011₂ (3)
0000000110₂ (6)
0000001010₂ (10)
0000001111₂ (15)
0000010101₂ (21)
0000011100₂ (28)
0000100100₂ (36)
0000101101₂ (45)
0000110111₂ (55)

Specify the character to split

the input binary numbers.

the input binary numbers.

Output padding length – add

zeros before the binary.

zeros before the binary.

Add a binary prefix or

postfix to the number.

postfix to the number.

Display binary number's

decimal value next to it.

decimal value next to it.

If multiple numbers are being

summed, then output their

partial sum.

summed, then output their

partial sum.

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/binary/add-binary-numbers__?input__=111111111%0A000000001&input-separator=%255Cn&padding-length=0&prefix=without-prefix&running-sum=false&show-decimal=false

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Created with love by

51K

@browserling

51K

@browserling

We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling we love to make people's lives easier, so we created this collection of binary 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 binary tools are actually powered by our programmer tools that we created over the last couple of years. Check them out!

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