How Many Hours Is 9am to 4pm?

7 hours
= 7.00 in decimal hours
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What about lunch?

Deducting an unpaid lunch break changes your paid hours:

Lunch breakPaid hoursDecimal
None7 hours7.00
20 min *6h 40m6.67
30 min6h 30m6.50
45 min6h 15m6.25
60 min6 hours6.00