Calculator
What the CSS Formatter does
CSS Formatter: formats Status and Output from CSS Input. Example: the sample loaded on the page gives status Beautified.
Point it at CSS Input and it returns Status and Output. You can nudge a single number and watch the effect straight away.
Most people who open the CSS Formatter are people inspecting an API response. Most of these tasks are one-liners in a terminal, but not when you are away from one.
Because it is all local, the tool is as fast as your device and as private as your own notes.
The sections that follow cover the fields, the method, and one full example computed from the defaults.
What do the CSS Formatter fields mean?
The CSS Formatter uses 1 input. Pre-filled inputs double as documentation: each one shows what a reasonable value looks like.
| Field | What to enter | Default |
|---|---|---|
| CSS Input | paste or type any amount of text | body{margin:0;font-family:system-ui} .card{padding:16px;border-radius:8px} |
How does the CSS Formatter work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same formatted output.
Values are checked first: an out-of-range or non-numeric entry names the offending field instead of returning nonsense.
Worked example
These are the values the CSS Formatter loads by default, and the result it produces from them. This is the worked example the page starts from, reproduced here so you can check the arithmetic.
| CSS Input | body{margin:0;font-family:system-ui} .card{padding:16px;b… |
|---|
| Status | Beautified |
|---|---|
| Output | body{ margin:0; font-family:system-ui } .card{ padding:16px; border-radius:8px } |
How to use it
- Paste your content into CSS Input.
- Each keystroke triggers a fresh calculation, which is cheap because it happens locally.
- You get Status and Output back.
- Copy Link puts the current inputs in the URL, so bookmarking it brings the same numbers back.
What this tool does not do
- Output follows the common convention for this format; a specific toolchain may have its own house style.
- Processing happens in your browser, so extremely large inputs are bounded by available memory.
- Nothing is saved between visits, so keep your own record of anything you need again.
Frequently asked questions
You need CSS Input. Every box already holds a working value, which means a single edit is enough to get a meaningful answer.
With the values loaded when the page opens, status comes out as Beautified. The figure is derived from the inputs above, so it updates whenever they do.
No. The parsing happens in your browser, so sensitive payloads never leave your machine.
No. There is no account, no usage cap and no trial period. The site is funded by advertising rather than by charging for the tools.
The formatted output is exact for the method described above. Where a value is rounded for display, the underlying figure keeps full precision.