# Binary left-shifter

## World's simplest binary tool

Free online binary left-shifter. Just load your binary values and their bits will automatically get shifted to the left. There are no ads, popups or nonsense, just an awesome bit shifter. Load bits – get left-shifted bits. Created for developers by developers from team Browserling.

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Binary left-shifter tool
What is a binary left-shifter?

This tool shifts binary numbers to the left side. It moves each digit (bit) in the number's binary representation by one or more positions to the left and adds zeros in the empty positions on the right. This mathematical operation is also known as logical left-shift, arithmetic left-shift, or bitwise left-shift. For the left-shift, all these operations are equivalent (but they are not equivalent in right-shift operation). We have implemented three main types of this operation: unlimited left-shift, self-length left-shift, and truncated left-shift (also known as constant-length left-shift). The unlimited left-shift adds n (shift length) zeros at the end of the binary number. For example, applying the unlimited shift to the binary number 10110 with a shifting width of 2, it becomes 1011000. The self-length shift preserves the bit-length of the number. It moves all bits n positions to the left, fills empty bits on the right with zeros, and truncates the number to its original length. In this case, the number 10110 becomes 11000 (with shift-width = 2). Truncated left-shift adds n zeros at the end of the binary number and truncates the number from the left side to k positions (k is truncation length). Given the same number 10110, shift length n = 2, and truncation length k = 4, the number shifts to 1000. You can also add binary prefix or postfix to the output values and perform signed and unsigned padding of the output values. Signed padding adds ones in front of the numbers and unsigned padding adds zeros. Also, a fun mathematical fact is that the left-shift operation by n positions is the same as multiplying the number by 2

^{n}. Simple and easy!
Binary left-shifter examples
Click to use

Regular Left Shift

This example applies the unlimited left shift algorithm to ten binary numbers listed in a column. This shift type adds as many zeros at the end of the number as you need and has no particular length limit. That's why we call it "unlimited". In this example, it appends two extra zeros and outputs the new binary numbers. It also enables unsigned padding to six positions so that all output numbers have the same length.

1
10
11
100
101
110
111
1000
1001
1010

000100
001000
001100
010000
010100
011000
011100
100000
100100
101000

**Required options**

Specify the number of bits (n)
to shift binary to the left.

Add n zeros at the end of
the binary number.

Pad shifted binary to this length.
(Use 0 to disable padding.)

Use 0's for padding.

Constant Length Left Shift

In this example, we shift five 10-digit binary numbers to the left using the self-length shift method and set the shift-width equal to 3. This method removes the first 3 bits at the beginning of input numbers and adds 3 bits at the end of the input number. This operation leaves the numbers' bit-length unchanged and that's why we call it the "self-length" method (and sometimes the "constant-length" method).

1010101010
0101010101
1100110011
0011001100
1111111111

0101010000
1010101000
0110011000
1001100000
1111111000

**Required options**

Specify the number of bits (n)
to shift binary to the left.

Add n zeros at the end and
remove n bits from the
beginning of the number.

Pad shifted binary to this length.
(Use 0 to disable padding.)

Truncated Left Shift

In this example, we use the "Truncated Left Shift" method on nine binary numbers. We set the shift length to 2 and truncation length to 6. In this case, the utility first expands the number by two zero bits and then truncates the numbers from the left side to 6 digits. It also adds a lowercase binary postfix "b" and disables padding by setting padding to 0.

1011
10110
100001
101100
110111
1000010
1001101
1011000
1100011

101100b
011000b
000100b
110000b
011100b
001000b
110100b
100000b
001100b

**Required options**

Specify the number of bits (n)
to shift binary to the left.

Add n zeros at the end and
truncate the binary number
from the left to k digits.

Truncation length (k bits).

Pad shifted binary to this length.
(Use 0 to disable padding.)

Pro tips
Master online binary 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://onlinebinarytools.com/shift-binary-left

__?input__=1%0A10%0A11%0A100%0A101%0A110%0A111%0A1000%0A1001%0A1010&shift-length=2&unlimited-left-shift=true&padding-length=6&unsigned-padding=true&prefix=without-prefix
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