Calculator
What the JSON to Rust does
JSON to Rust: converts Status and Rust from JSON and Root struct name. Example: root struct name Root gives status 3 structs generated.
The inputs are JSON and Root struct name; the output is Status and Rust. Adjust anything and the figures re-derive on the spot.
Most people who open the JSON to Rust 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.
The field reference, the method and a worked example using the default inputs follow the tool itself.
What do the JSON to Rust fields mean?
The JSON to Rust uses 2 inputs. The page opens in a usable state: real values in, real answer out, ready to edit.
| Field | What to enter | Default |
|---|---|---|
| JSON | paste or type any amount of text | { "id": 42, "name": "Ada", "is_active": true, "score": 9.5, "tags": ["admin", "dev"], "address": { "city": "London", "zip": "N1" }, "orders": [ { "id": 1, "total": 19.99 }, { "id": 2, "total": 5, "note": "gift" } ] } |
| Root struct name | required | Root |
How does the JSON to Rust 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 conversion.
Each field is verified before use; failures are reported explicitly rather than swallowed.
Worked example
These are the values the JSON to Rust loads by default, and the result it produces from them. Below is the same computation the tool performs on load, step by step.
| JSON | { "id": 42, "name": "Ada", "is_active": true, "sc… |
|---|---|
| Root struct name | Root |
| Status | 3 structs generated |
|---|---|
| Rust | use serde::{Deserialize, Serialize}; #[derive(Debug, Clone, Serialize, Deserialize)] pub struct Root { pub id… |
How to use it
- Paste your content into JSON.
- Fill in Root struct name.
- There is nothing to click. The answer keeps pace with your edits.
- Read Status and Rust in the results panel.
- Copy Link when you want to return to this exact configuration; Print when someone needs it on paper.
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.
Frequently asked questions
Only JSON and Root struct name. Every box already holds a working value, so you can change one value at a time and watch how the result responds.
With the values loaded when the page opens, status comes out as 3 structs generated. Adjust any field to see how much the answer depends on it.
No. There is no upload step, no database, and nothing to delete afterwards.
No charge. Everything on the page is available without signing in.
It is accurate to the method shown. Rounding only affects what is displayed, never what is computed.