All column indices are 1-based (column 1 is the first column). All processing happens in your browser.
Data format conversion is one of the most common tasks across software development, data engineering, and API integration. The CSV Column Tools is Extract, delete, swap or reorder columns in a CSV — and it runs entirely in your browser with no data sent to any server. Whether you are a developer, data analyst, student, or technical user, this free tool removes friction from your workflow and gives you instant, accurate results every time. If you need to take the output a step further, try the CSV to JSON — it handles the next stage of the workflow.
The CSV Column Tools is a free, browser-based utility that extract, delete, swap or reorder columns in a csv. It processes your input locally using JavaScript, which means all operations happen on your device — no uploads, no server processing, and no privacy concerns. The result is immediate, updating as you interact with the tool. Alternatively, if you are looking for something slightly different, the JSON to CSV may be a better fit.
Tools like this are used every day by web developers, DevOps engineers, data scientists, security professionals, and content creators. The CSV Column Tools belongs to this class of essential utilities that save time, reduce errors, and streamline everyday technical tasks.
There are many generic tool sites online, but the CSV Column Tools on Chunky Munster is built with a developer-first mindset. Everything runs in your browser — there are no paywalls, no rate limits, no forced sign-ups, and no advertisements disrupting your concentration. For related work, the CSV Transposer is another popular tool worth bookmarking.
The CSV Column Tools converts structured data between formats — producing valid, well-formed output instantly in your browser.
Yes. All conversion happens locally in your browser. Your data is never uploaded to any server or third-party service.
There is no enforced limit. Performance depends on your browser, but the tool handles typical datasets and configuration files well.
Completely free — no sign-up, no usage restrictions, and no data leaving your browser.
The CSV Column Tools is a free, private, and reliable tool for every developer and technical user. Bookmark this page for fast access, share it with your team, and explore the full collection of tools at Chunky Munster — all free, all browser-based, all yours. You might also find these related tools useful: CSV to JSON, JSON to CSV, CSV Transposer.