Rotate a Binary Right
Rotate bits of a binary number to the right. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Rotate a Binary Right
- 1. Enter the value to rotate. Type or paste the binary number, for example 0001, into the input pane. Keep the leading zeros; the tool rotates within exactly the width you provide.
- 2. Choose the Amount. Amount sets how many places bits travel rightward. Bits that fall off the low end reappear at the high end, so 0001 rotated by 1 becomes 1000 with every bit retained.
- 3. Copy the wrapped result. Copy the rotated value from the output pane. Rotating right by n is the same as rotating left by width minus n, which you can confirm against the companion tool.
When to use Rotate a Binary Right
Rotate a Binary Right implements the circular right shift, the ROR operation that carries low bits around to the top of the word. Right rotation is a workhorse of the SHA-2 family and of embedded bit tricks, and seeing it applied to your own pattern beats reasoning about wraparound in your head.
- Working a SHA-256 example. The sigma functions in SHA-256 combine right rotations by 7, 18 and other amounts. Compute each rotation of your test word here while validating a from-scratch implementation.
- Decoding obfuscated firmware constants. Reverse engineering often reveals constants stored pre-rotated to defeat casual reading. Try a few ROR amounts on the stored bits until a meaningful value emerges.
- Checking a barrel shifter design. An FPGA barrel shifter must handle right rotation for all shift amounts. Generate expected outputs for representative operands here and assert against them in the simulation testbench.
- Illustrating rotation symmetry. To show that ROR by 3 on an 8-bit value equals ROL by 5, run both operations on the same input and present the identical results side by side.
Examples
Rotate right by 1
Input
0001
Output
1000
Rotate right by 2
Input
1100
Output
0011
About the Rotate a Binary Right tool
Rotate a Binary Right runs as plain JavaScript in your browser tab, with no server behind it. Rotate bits of a binary number to the right. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Binary Tools section, 112 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with the Amount setting, and the result refreshes the moment you change it. 2 worked examples further down the page show exactly what the tool produces for real inputs.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Rotate a Binary Right free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.