Build with OneCalc

Developer Resources

Deep links, embeds and API access for integrating OneCalc conversions into your own product.

Deep linking

Every converter and calculator has a stable, shareable URL:

/convert/length          → unit converter by category
/convert/currency        → live currency converter
/file-converters/jpg-to-png → file conversion tool
/solar/system-size       → solar engineering calculator

Embedding

Embed any tool in an iframe. Widths below 480px automatically switch to the compact mobile layout.

<iframe src="https://onecalcapp.com/convert/length"
        width="100%" height="620" style="border:0"></iframe>

Client-side architecture

File, image, media and OCR tools run fully in the browser via WebAssembly. No file data is transmitted, which makes OneCalc safe to embed in privacy-sensitive workflows.

API access

Programmatic access is available through the OneCalc API (private preview), which exposes unit conversion, live currency rates and solar calculations over REST with JSON payloads and bearer-token auth. Until it opens publicly, deep links and iframe embeds cover most integrations and require no key.