How Many Hours Is 7am to 7pm?

12 hours
= 12.00 in decimal hours
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What about lunch?

Deducting an unpaid lunch break changes your paid hours:

Lunch breakPaid hoursDecimal
None12 hours12.00
20 min *11h 40m11.67
30 min11h 30m11.50
45 min11h 15m11.25
60 min11 hours11.00