Shift Differential Calculator
Add a night, evening or weekend differential to your base rate and see your weekly pay, including overtime.
Differential rate
$22.00
How the shift differential calculator works
- Enter your base hourly rate.
- Enter the differential as a percentage (for example 10%) or a flat amount per hour (for example $2).
- Enter how many hours this week qualify for the differential, such as night or weekend hours, and how many were at the base rate.
- Leave time and a half after 40 hours on if you are paid overtime.
The calculator shows your differential rate, the pay for each group of hours, and the week's total. If you work more than 40 hours, it uses the blended regular rate for overtime: all straight-time pay, including the differential, divided by all hours worked, as required under the US Fair Labor Standards Act. It also estimates the year at the same schedule.
Worked example
$20 base, 10% night differential, 24 night hours and 16 day hours: the night rate is $22, so the week pays 24 × $22 + 16 × $20 = $528 + $320 = $848. The differential added $48. For 30 night hours and 15 day hours with a $2 differential, the 45-hour week pays $960 straight time plus a $53.33 overtime premium on the $21.33 blended rate, a total of $1,013.33.
Read the shift differential guide for the full method, which hours usually qualify, and how differentials affect PTO. To see when each crew works, use the shift schedule maker, and for typical evening and night shift times see 1st, 2nd and 3rd shift hours.
Results are estimates before tax. Your employer's policy, contract and local law decide the actual pay.
Frequently asked questions
How do I calculate shift differential pay?
Add the differential to your base rate (or multiply by 1 plus the percentage), then multiply by the qualifying hours. A $20 base with 10% is $22 an hour.
Does the shift differential count toward overtime?
Yes, under the US FLSA. Overtime is 1.5 times the blended regular rate, which includes the differential.
What is a typical night shift differential?
It varies by employer. Some pay a flat amount such as $1 to $3 an hour, others a percentage such as 10%. US federal employees on the General Schedule get 10% for regular night work.