How Many Hours Is 8am to 12pm?

4 hours
= 4.00 in decimal hours
No sign-up · your data never leaves this browser Instant answer — no calculator needed

What about lunch?

Deducting an unpaid lunch break changes your paid hours:

Lunch breakPaid hoursDecimal
None4 hours4.00
20 min *3h 40m3.67
30 min3h 30m3.50
45 min3h 15m3.25
60 min3 hours3.00