# Duration converter

Convert a duration between nanoseconds, milliseconds, seconds, hours and days, and read ISO 8601 durations.

## How it works

ISO 8601 writes durations as P for period, then days, then T and hours, minutes and seconds: PT1H30M is an hour and a half.

## Questions

### Why do traces use nanoseconds?

OpenTelemetry stores span times in nanoseconds so very fast operations still have a duration.

### Are months in ISO durations supported?

Months vary in length, so this tool reads weeks, days, hours, minutes and seconds.

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