Time interval to string

[123 (Taras)]

In case anyone else is looking for a concise way of displaying seconds as hours/minutes/seconds (and suppressing hours or minutes if they're zero):

{{ states('sensor.custom_print_time_left') | int(0)
  | timestamp_custom('%-H hr %-M min %-S sec', false)
  | regex_replace('(^0 hr| 0 min)', '') | trim }}

The pattern within timestamp_custom is easy to change if you need a different time format.

Reference: strftime

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EDIT

I had a sense of déja vu while writing this post and then found that I had suggested the same technique to someone else last month:

Converting seconds from a sensor to hours and minutes

Not quite as concise as I wanted but it does display the remaining time in the format you requested. {{ states('sensor.cook_time_remaining') | int(0) | timestamp_custom('%-Hh %-Mmin %-Ssec', false) | regex_replace('(^0h| 0min| 0sec$)', '') | regex_replace('(^ )', '') }}