About the YAML to CSV Converter
This tool converts YAML to CSV in your browser. YAML is an indentation-based format where nesting is shown by spaces, lists start with a dash and keys end with a colon, and it is common in configuration files, Kubernetes, Docker Compose and CI pipelines. CSV is a plain table where commas split the columns and each line is a row, and it is common in spreadsheets, database exports and mailing-list uploads. When a file in the first format has to go into a program that wants the second, you can paste the text, read the CSV on the right, and copy or download it. A YAML list of items with the same keys becomes a table whose header line holds the keys and whose rows hold the values. Everything runs on your device, so the YAML you paste is never sent to a server, which matters when the data is a customer list, a payroll export or private settings.
Updated October 2026
How to use the YAML to CSV Converter
- 1Paste your YAML into the box on the left, or press Try a sample to see how it works.
- 2Check the options above the boxes; they only show the ones that matter for YAML to CSV.
- 3Read the CSV output on the right. It updates as you type.
- 4If an error appears, it names the line of the YAML that could not be read; fix it and the output returns.
- 5Press Copy result, or Download to save a CSV file.
Why people convert YAML to CSV
The two formats suit different jobs. YAML is an indentation-based format where nesting is shown by spaces, lists start with a dash and keys end with a colon; people meet it in configuration files, Kubernetes, Docker Compose and CI pipelines. CSV is a plain table where commas split the columns and each line is a row; people meet it in spreadsheets, database exports and mailing-list uploads. A move from YAML to CSV usually happens when data created in one place has to be used in another, and retyping it by hand would be slow and error-prone.
A YAML list of items with the same keys becomes a table whose header line holds the keys and whose rows hold the values. Nested keys are flattened into dotted column names, so address and then city turns into the single column address.city, and a list inside an item is written into its cell as JSON text.
How the YAML to CSV conversion works
The tool first reads your YAML into a plain structure of rows or objects, so it knows what is a key and what is a value. It then writes that structure again in the CSV style. Because nothing is guessed about the content, the values you see in the CSV are the ones that were in the YAML.
Values that contain commas or quotes are wrapped in quotation marks so the table stays correct.
- Paste the YAML exactly as it is, including the header line if there is one.
- Use Try a sample to see how a small YAML turns into CSV before using your own data.
- Read the CSV before you use it; check that special characters came through as you expect.
Tips for a clean CSV result
Start with tidy YAML: the same keys or columns in every record give the neatest CSV. If your YAML has stray blank lines or an inconsistent number of items, tidy them first, or the CSV will show empty values where something is missing.
Keep a copy of the original YAML. The conversion works well for data, but formatting such as colours, formulas and comments belongs to the program that made the file and does not travel into plain CSV.
On phone and computer
On a computer, paste with Ctrl+V or Cmd+V, check the CSV and use Copy result. On a phone, long-press in the left box to paste, and use the Download button to save a CSV file you can send from the share menu.
The two boxes sit side by side on a wide screen and one above the other on a narrow one, so you can read both without zooming. Wide tables with many columns are easier to check on a computer, but short lists work fine on a phone. If a nested YAML list gives odd columns, view it with JSON Formatter and check it with JSON Validator. Data Format Converter covers other targets, and CSV Tools helps you sort and filter the table.
Features
- Converts YAML to CSV as you type
- Clear error messages that name the problem in the YAML
- Sample data to try first
- Copy result or download as a file
- Private: runs in your browser, nothing uploaded
- Works on phone and computer
Frequently asked questions
How do I convert YAML to CSV?
Paste the YAML into the left box and the CSV appears on the right straight away. Press Copy result to copy it or Download to save a file. You can also press Try a sample first. With the sample YAML shown here, the CSV output is: name,age,city / Ann,30,Pune / Bob,25,Leeds.
Is this YAML to CSV converter free and private?
Yes. It is free, needs no account and works in your browser, so the YAML you paste stays on your device. Nothing is uploaded or stored, which makes it suitable for lists and settings that you would rather not send anywhere.
What happens to numbers and true or false values when converting YAML to CSV?
They keep their type: a number stays a number and true or false stays a boolean, and the CSV writer decides how to show them. For CSV that has no types of its own, they are written as plain text.
What is the difference between YAML and CSV?
YAML is an indentation-based format where nesting is shown by spaces, lists start with a dash and keys end with a colon. CSV is a plain table where commas split the columns and each line is a row. YAML is mostly used for configuration files, Kubernetes, Docker Compose and CI pipelines, while CSV is mostly used for spreadsheets, database exports and mailing-list uploads.
What if my YAML is invalid?
The converter does not guess. It stops and shows what is wrong, with the line where it can tell, so you can fix the YAML and try again. An empty box simply gives an empty result.
Is there a size limit for YAML to CSV conversion?
Very large pasted text can slow a phone, so there is a limit of about 2 million characters. For the usual files, such as a few thousand rows, the CSV appears within a moment.
Can I change the YAML to CSV output after converting?
Yes. The result is plain text that you can copy into any editor. If you change an option, such as the header row or the indent, the CSV updates by itself.