10:00.5

Could you clarify what you want to do with 10:00.5? There are a couple of common interpretations.

Possible interpretation: 10 minutes and 0.5 seconds (mm:ss.s format)

• Seconds: 600.5 s
• Minutes: 10.008333... min
• Hours: about 0.1668 h
• Milliseconds: 600,500 ms

If you meant something else (e.g., 10:00.5 as hours:minutes with a fractional minute, or a timestamp in a specific context), tell me the context and I’ll convert accordingly.