Calculator
What the Border Radius Generator does
Border Radius Generator: generates Status and CSS from Top-left, Top-right and Bottom-right. Example: top-left 12, top-right 12 and bottom-right 12 gives status CSS ready.
This generator reads Top-left, Top-right, Bottom-right and Bottom-left and produces Status and CSS. Values update as you type, so comparing options is a matter of editing one field.
Typical users are anyone cleaning up machine output. Reading raw machine output is painful; a formatted view makes the structure obvious.
Your data stays on your machine. Once the page has loaded you could disconnect entirely and it would still work.
Each field is explained further down, along with the method and a worked example that uses the default values.
What do the Border Radius Generator fields mean?
The Border Radius Generator uses 4 inputs. Sensible defaults are loaded up front, which means you can change one number at a time instead of filling the whole form first.
| Field | What to enter | Default |
|---|---|---|
| Top-left | optional | 12 |
| Top-right | optional | 12 |
| Bottom-right | optional | 12 |
| Bottom-left | optional | 12 |
How does the Border Radius Generator 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 generated output.
Bad input produces a message, not a silently incorrect figure.
Worked example
These are the values the Border Radius Generator loads by default, and the result it produces from them. These are the exact values loaded when the page opens, and the answer they produce.
| Top-left | 12 |
|---|---|
| Top-right | 12 |
| Bottom-right | 12 |
| Bottom-left | 12 |
| Status | CSS ready |
|---|---|
| CSS | border-radius: 12px 12px 12px 12px; |
How to use it
- Set Top-left.
- Put Top-right.
- Key in Bottom-right.
- Fill in Bottom-left.
- Because there is no round trip to a server, updating on every keystroke costs nothing.
- Check Status and CSS on the right.
- Print gives a tidy version without the navigation, which is handy for attaching to a file.
What this tool does not do
- Processing happens in your browser, so very large inputs are bounded by available memory.
- Output follows the common convention for this format; a specific toolchain may have its own house style.
- Precision beyond what the inputs justify is not meaningful, however many digits appear.
- The result inherits any error in the inputs without flagging it.
Frequently asked questions
The form asks for Top-left, Top-right, Bottom-right and Bottom-left. Nothing starts empty, so the quickest approach is to replace the one number you actually care about.
With the values loaded when the page opens, status comes out as CSS ready. Overwrite any of the starting values and the result follows.
No: there is no server involved. Close the tab and the values are gone.
No payment and no login. Advertising covers the running costs.
As accurate as the inputs allow. The arithmetic itself introduces no error beyond display rounding.