About The Range List Tool

The Range List Tool compresses number lists into compact ranges or expands ranges back into individual numbers. It runs locally in your browser for quick configuration and reporting work.

How to Use Range List Tool Online

1. Paste numbers or ranges into the input area.
2. Choose whether to compress numbers or expand ranges.
3. Click Run Range Tool and copy the normalized output.

Choosing Options Correctly

Compress mode extracts integers from the input and groups consecutive values. Expand mode expects comma, space, or newline separated numbers and ranges such as 1-5.

Common Use Cases

• When you have a list of numbers that need to be expanded into a full range.
• If you require data compression for a more concise representation of number sequences.
• To format ranges consistently before using them in applications or scripts.
• When preparing configuration files that require specific numeric formats.

Quick FAQ

Are my lists uploaded?
No. Range compression and expansion run in the browser.

What types of input can I use?
Use numbers, ranges, and separators supported by the page. Keep the input consistent for predictable output.

How can I ensure accurate output?
Remove stray text, check separators, and review whether ranges are inclusive.

Can it sort and deduplicate values?
Use the available options if shown. Otherwise clean the list first when order or duplicates matter.