RLE-decode a Binary Number
Decode a previously RLE-encoded binary sequence. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use RLE-decode a Binary Number
- 1. Paste the run-length pairs. Enter the encoded runs in the input pane using the count-times-bit notation, for example 3x1 3x0. Each pair says how many copies of which bit to emit.
- 2. Watch the runs expand. The decoder replays each pair in order, so 3x1 3x0 unrolls into 111000. Counts can be large, which is exactly when manual expansion becomes error-prone and this tool earns its keep.
- 3. Copy the expanded bits. Copy the reconstructed bit string from the output pane. Feeding it back through the companion RLE encoder should reproduce your input pairs, confirming a lossless round trip.
When to use RLE-decode a Binary Number
RLE-decode a Binary Number expands run-length encoded pairs back into the literal bit stream they describe. Run-length encoding shows up in fax formats, bitmap compression and homemade data formats, and once data is stored as counts you need a decoder to inspect it. This one runs the expansion instantly in your browser.
- Inspecting compressed bitmap rows. A 1-bit image format stores each scanline as runs. Decode a suspicious row to raw bits and compare it with neighboring rows to find where the image data corrupted.
- Grading RLE homework decodes. Students hand-expand run-length pairs in a data compression unit. Decode the same input here to produce the answer key and settle disputes about a miscounted run.
- Debugging a custom telemetry format. Your embedded logger compresses idle periods as long zero runs. Decode a captured record to raw bits when you need to line events up against a timing diagram.
- Round-trip testing an encoder. After writing an RLE compressor, decode its output with this independent implementation. Any mismatch with the original input isolates the bug to your encoding side.
Examples
Decode runs
Input
3x1 3x0
Output
111000
About the RLE-decode a Binary Number tool
RLE-decode a Binary Number is a free online tool that works entirely inside your web browser. Decode a previously RLE-encoded binary sequence. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 112 Binary utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is RLE-decode a Binary Number 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.