# Duration Convert

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Use to convert fixed ISO8601 durations (days, hours, minutes, seconds) to seconds and a canonical duration. Calendar years/months/weeks and negative values are deliberately unsupported.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Convert fixed day/hour/minute/second durations.

## Outside this profile
- Calendar months, years, weeks, negative durations, or date arithmetic.

Proposed nominal USD 0.003 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/duration-convert.json)
- [Input schema](/reference/schemas/duration-convert.input.json)
- [Output schema](/reference/schemas/duration-convert.output.json)
- [Fixed example](/reference/examples/duration-convert.json)
- [Complete HTML reference](/discover/tools/duration-convert)