100 hours of PTO is how many days?

12.5 days off.

That is at an 8-hour workday — 100 ÷ 8 = 12.5. Twelve and a half days. That is 2.5 work weeks.

If your workday is not 8 hours

This is the part that trips people up. The same 100 hours buys fewer days on a long shift.

100 PTO hours converted to days at several workday lengths.
Workday	Days off	Typical of
6 hours	16.67 days	Part-time
7.5 hours	13.33 days	Unpaid-lunch schedules
8 hours	12.5 days	Standard full-time
10 hours	10 days	Four-day weeks
12 hours	8.33 days	Nursing, shift work

How long it takes to earn 100 hours

Time required to accrue 100 PTO hours at common annual grants.
Annual PTO	Per paycheck (biweekly)	Time to reach 100 h
80 h/yr	3.08 h	1.3 years
120 h/yr	4.62 h	10 months
160 h/yr	6.15 h	7.5 months
200 h/yr	7.69 h	6 months

Assumes even accrual across 26 biweekly pay periods and no cap or carryover limit.

Worth knowing

100 hours is a round number to a payroll system and an awkward one to a person. At 8 hours a day it leaves half a day over, which many policies will not let you take alone.

Need a different number? Use the hours-to-days converter, or work out a full balance with the accrual calculator.