Example 1
168 × 1 -> 168 hours, 100% time.
Employment Fraction Hours Calculator
Enter a full-time monthly norm and an employment fraction — or a day length such as 8:15 with an unpaid break and days worked, or weekly hours. At 168 hours and a 0.5 fraction the result is 84 hours. In day mode, 8:15 minus 30 unpaid minutes × 21 days is about 162.75 h. This is contract or schedule time, not pay and not a holiday calendar.
Result
Pick a mode and enter numbers. The result will appear here.
Pay at the same fraction: amount at part-time. Rate from monthly pay: hourly rate. Leave for months worked: leave days accrual.
How it works
On site8:15
−
Break30 min
→
Net7.75 h
People mix three questions: “what fraction is on the contract”, “how many hours come from my 8:15 day with a break”, and “what does twenty hours a week become in a month”. This calculator keeps those paths separate.
Norm mode multiplies full-time monthly hours by the fraction and rounds. 168 × 0.5 is 84. An optional unpaid break scales with 21 days × fraction.
Day mode uses on-site length like 8:15, unpaid meal minutes, and days worked. Net day = on-site − break/60. At 8:15 and 30 minutes, net is 7.75 h; × 21 ≈ 162.75 h. FTE % divides by 168. A short paid rest break is usually already inside work time — do not subtract it twice.
Week mode: month ≈ weekly hours × (21/5). 20 h/week → 84 h/month and 50% versus a 40-hour week. Approximation only — not a holiday calendar.
Article hook: the offer says “full time”, the schedule says 8:00–16:30 with an unpaid lunch — how many net hours is that versus 168? Run both modes and compare.
Formulas
norm: hours = round(norm × fraction); net = max(0, hours − (min/60)×21×fraction)
day: net_day = on_site − min/60; month = net_day × days; % ≈ month/168 × 100
week: month ≈ h_week × (21/5); % = h_week/40 × 100
How to use
- In full-time hours, enter the month count, for example 168.
- In the fraction field, enter 0.5 for half, 0.75 for three quarters, or 1 for full time.
- Click Calculate. 168 and 0.5 give 84 hours and 50 percent time.
- Leave daily break minutes empty if you are not subtracting a pause. 30 minutes at full-time 168 leaves 157.5 net hours.
- Pay at the same fraction belongs on the part-time amount page. This page stays with hours.
Formula
hours = round(full-time hours × fraction)
net after break = max(0, hours − (minutes/60) × 21 × fraction)
Model: employment-fraction (FTE) hours. Full-time hours > 0. 0 < fraction ≤ 1. Empty break = no net row. Not a statutory hours table.
Monthly hours from an employment fraction
Hours = full-time hours × fraction. 168 and 0.5 give 84 hours. 168 × 0.75 = 126. Contract time, not pay.
- fraction
- The hours fraction. 168 × 1 = 168, 168 × 0.5 = 84. Employment fraction (e.g. 0.5 = 1/2).
- Full-time
- Full-time hours (h / month). 0.75 × 168 = 126. An optional daily break subtracts (minutes/60) × 21 × fraction.
Real-life examples
Example 2
168 × 0.5 -> 84 hours, 50% time.
Example 3
168 × 0.75 -> 126 hours, 75% time.
Example 4
160 × 0.5 -> 80 hours in the month.
Example 5
168 × 0.25 -> 42 hours, 25% time.
Example 6
176 × 1 -> 176 hours, full time.
Example 7
168 × 1 and 30 min -> 168 hours, net 157.5.
Example 8
168 × 0.5 and 30 min -> 84 hours, net 78.75.
Ways to use this calculator
- You check that half of 168 really is 84 hours before you put 0.5 into an addendum.
- You subtract a 30-minute break across 21 days to see 157.5 net hours at full time, or 78.75 at half-time.
FAQ
What are the three ways to calculate on this page?
Monthly norm × FTE fraction; day length (e.g. 8:15) minus unpaid break × days in the month; or weekly hours × (21/5). You pick one mode.
How do I enter an 8 hour 15 minute day with a 30-minute break?
In Day schedule mode enter 8:15 (or 8.25), working days e.g. 21, and unpaid break 30. Net day is 7.75 h; at 21 days ≈ 162.75 h in the month.
Should a short paid rest break come off the hours?
Usually no — paid rest is already inside work time. Use the unpaid field only for a meal break that is not paid work time. Guidance only, not legal advice.
Where do 168 or 160 hours come from?
You enter the norm from the contract or schedule. This page does not apply a holiday calendar for a named month.
How is FTE % in day mode different from entering 0.5?
In fraction mode you enter 0.5. In day mode the calculator estimates % versus a 168-hour full-time month from the net hours your day and break produce.
Is the result pay?
No. These are hours and an FTE estimate. Pay at a fraction belongs on the part-time amount page.
How does week mode work?
Month ≈ weekly hours × (21/5). At 20 h/week you get 84 h/month and 50% versus a 40-hour week.
Can I enter 8.25 instead of 8:15?
Yes. 8:15, 8.25, and 8,25 mean the same: eight hours and a quarter.
Is this a statutory holiday working-hours table?
No. The calculator does not subtract public holidays or count full weeks from a calendar. You enter your own norm or day schedule — the result is an FTE proportion or a day sum, not a legal hours table.
How many hours is 0.75 FTE at a 168-hour norm?
168 × 0.75 = 126 hours in the month. At a 160-hour full-time norm, three-quarters is 120 hours.
How many hours is half-time at a 160-hour norm?
160 × 0.5 = 80 hours. At 168 hours, half-time is 84 hours.
How many monthly hours from a 20-hour week?
In week mode: 20 × (21 ÷ 5) = 84 hours. That assumes 21 working days and skips a holiday calendar.
Do holidays reduce the result on this page?
No. Holidays are outside the formula. If the month uses a different norm, enter it in the full-time field or change the day count in day mode.
Where do I calculate pay at the same fraction?
On the pay-at-part-time page. This page stays with hours — for example 84 h from 168 × 0.5.
Sources
FTE hours = full-time × fraction, with rounding. Contract arithmetic, not a statutory timesheet.
- Wikipedia — full-time equivalent
- U.S. DOL — Wage and Hour Division (context only; you still enter the hours)
Page updated November 3, 2026.