time.ParseDuration

The time.ParseDuration function returns a time.Duration value that you can use with any of the Duration methods.

A duration string is a possibly signed sequence of decimal numbers, each with optional fraction and a unit suffix, such as 300ms, -1.5h or 2h45m. Valid time units are ns, us (or µs), ms, s, m, h.

This template:

{{ $duration := time.ParseDuration "24h" }}
{{ printf "There are %.0f seconds in one day." $duration.Seconds }}

Is rendered to:

There are 86400 seconds in one day.