Guide · 3 min read
Decimal hours explained (and how to convert them)
Decimal hours express time as a number: 1.5 hours instead of 1 hour 30 minutes. They're what payroll and invoicing systems use because they multiply cleanly by a rate.
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Converting
H:MM → decimal: hours + minutes ÷ 60 (2:45 → 2.75). Decimal → H:MM: take the decimal part × 60 (2.2 → 2 h 12 min).
Quick reference
- 0:06 = 0.1
- 0:15 = 0.25
- 0:20 = 0.33
- 0:30 = 0.5
- 0:45 = 0.75
- 1:10 = 1.17
Frequently asked questions
Why do invoices use decimals?
Because 7.75 × $100 is easier to calculate than 7 h 45 min × $100.
Can Hourtick show decimals?
Yes, switch the workspace time format to decimal.
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