Binary Bit Manipulation Tool

Binary Bit Reversal Calculator

Reverse the order of bits in any binary string instantly. The rightmost bit becomes the leftmost bit, the second-to-last becomes the second bit, and so on while preserving the original bit width.

✓ Reverse Bit Order ✓ Preserve Bit Width ✓ Keep Leading Zeros ✓ Binary Validation ✓ Instant Result

REV

Bit Reversal

● Ready

Binary String

Enter a binary string using only digits 0 and 1. All bit positions are preserved.

Try:

✓ Reversed Binary Result

Binary string with the bit positions reversed

Original Length 0

Original Binary 0

Double Reversal 0

Reversal Breakdown

What Is Binary Bit Reversal?

Binary bit reversal changes the order of all bits in a binary string so that the first bit becomes the last, the second becomes the second-to-last, and so on.

Original: 110010 Reverse the positions: 010011 Therefore: reverse(110010) = 010011

How to Reverse Binary Bits

1. Keep the Original Width

Treat the input as an exact sequence of binary positions.

2. Start at the Right

Take the final bit of the original string first.

3. Move Backward

Continue reading each bit from right to left.

4. Build the New String

Write the collected bits from left to right to form the reversed result.

Example: Reverse 1011

Original: 1011 Read from right to left: 1 1 0 1 Result: 1101 Therefore: reverse(1011) = 1101

Example: Reverse 000101

Original 6-bit string: 000101 Reverse all six positions: 101000 Notice that the original leading zeros become trailing zeros. 000101 → 101000

Binary Bit Reversal Examples

Original Binary	Bit Length	Reversed Binary
`0`	1	`0`
`1`	1	`1`
`10`	2	`01`
`101`	3	`101`
`1011`	4	`1101`
`110010`	6	`010011`
`000101`	6	`101000`
`10000001`	8	`10000001`
`11110000`	8	`00001111`

Bit Reversal vs Binary NOT

Bit reversal and bitwise NOT are completely different operations.

Operation	Input	Output
Bit Reversal	`110010`	`010011`
Binary NOT	`110010`	`001101`

Reversal changes positions. NOT changes each bit value.

Bit Reversal vs Rotate

A rotation moves bits around a fixed-width word while preserving their relative cyclic order. Reversal mirrors the entire sequence.

Original: 101100 Reverse: 001101 Rotate left by one: 011001 These are different bit operations.

Why Does Bit Width Matter?

Bit reversal is defined over positions. Removing leading zeros before reversal can therefore change the result.

As a 6-bit string: 000101 → 101000 If the leading zeros were removed first: 101 → 101 These results are different.

BinaryCon therefore preserves the exact input width.

What Happens If You Reverse Twice?

Reversing a binary string twice always returns the original string when the same bit width is preserved.

110010 ↓ reverse 010011 ↓ reverse again 110010

This property makes reversal an involution: applying the same operation twice returns the starting value.

Palindromic Binary Strings

Some binary strings are identical when read from either direction. These are binary palindromes.

Examples: 1 → 1 101 → 101 1001 → 1001 10000001 → 10000001

For such inputs, the reversed result is exactly the same as the original.

Where Is Bit Reversal Used?

Bit Manipulation

Reversal is useful when rearranging packed binary data and bit fields.

Digital Signal Processing

Bit-reversed indexing is associated with some FFT algorithms.

Embedded Systems

Hardware interfaces may require bits to be transmitted or interpreted in a particular order.

Algorithm Practice

Bit reversal is a common programming and computer-science exercise.

Common Bit Reversal Mistakes

Removing Leading Zeros

Doing so changes the bit width and can produce a different reversed sequence.

Flipping Bit Values

Reversal changes positions; it does not turn 0 into 1 or 1 into 0.

Using Numeric Conversion

Converting to an integer first can discard leading zeros that are important to reversal.

Confusing Reversal with Rotation

Rotation cyclically shifts bits, while reversal mirrors their order.

Important: this calculator reverses the exact bit string you enter. Leading zeros are preserved as positions, so 000101 correctly reverses to 101000.

Related BinaryCon Tools

Binary Bit Reversal Calculator FAQs

What does reversing binary bits mean?

It means reversing the order of all bit positions so the final bit becomes first, the second-to-last becomes second, and so on.

What is the reverse of binary 110010?

The reverse of 110010 is 010011.

What is the reverse of 1011?

Reading 1011 from right to left gives 1101.

Are leading zeros preserved?

Yes. They are treated as real bit positions because bit reversal depends on the original width.

What is the reverse of 000101?

The six-bit sequence 000101 reverses to 101000.

Is bit reversal the same as bitwise NOT?

No. NOT flips each bit value. Reversal keeps the bit values unchanged but moves them to opposite positions.

Is bit reversal the same as rotation?

No. Rotation shifts bits cyclically. Reversal mirrors the complete sequence.

What happens if I reverse the result again?

You get the original binary string back, assuming the same bit width is kept.

Can a binary string equal its own reverse?

Yes. Such a string is a binary palindrome, such as 101 or 1001.

Does bit reversal change the numeric value?

Usually yes. Reversal changes the significance of bit positions, although palindromic patterns can keep the same value.