Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Calculate pay including a night or weekend shift premium.
$176.00
Many employers pay a premium -- a "shift differential" -- for less desirable hours like overnight or weekend shifts, expressed as a percentage on top of the base hourly rate. This calculator applies that percentage to a set of worked hours and shows the resulting total pay and effective hourly rate.
Enter your base hourly rate, hours worked, and the shift differential percentage. The result shows base pay, differential pay, total pay, and the effective (blended) hourly rate.
Base pay = hourly rate x hours worked. Differential pay = base pay x (differential % / 100). Total pay = base pay + differential pay. Effective hourly rate = total pay / hours worked.
8 hours at $20/hr with a 10% night differential: $160 base + $16 differential = $176 total ($22/hr effective).
For a lunch-break-adjusted version of straight shift pay (no differential), see the Lunch Break Deduction Calculator.
Imagine a weekend night shift of 10 hours at a base rate of $24 per hour with a hypothetical 15 percent differential. Base pay is 10 times 24, or $240. Differential pay is 240 times 0.15, or $36. Total pay is $276 and the effective hourly rate is 276 divided by 10, or $27.60. The effective rate is a good number to compare against other job offers, because it shows what you actually earn per hour worked once the premium is included.
This calculator handles a percentage premium. Some employers instead pay a flat amount per hour, such as a set number of cents or dollars added to the base rate. To model that here, convert the flat amount to a percentage: divide the extra dollars by your base rate and multiply by 100. A $2 per hour add-on on a $20 base rate equals a 10 percent differential. Check your offer letter or pay policy to see which form applies, since the wording matters when the base rate changes after a raise.
The tool applies the percentage to every hour you enter. If only part of your shift qualifies, for instance the hours after 7 p.m., run two calculations: one for the eligible hours with the differential and one for the remainder at 0 percent. Add the total pay figures together. As an example, a 9-hour shift where 4 hours qualify at 12 percent on a $22 base is 4 hours calculated with the differential, plus 5 hours at 0 percent.
How a differential combines with overtime differs between employers and jurisdictions. In some cases overtime is computed on a regular rate that includes shift premiums, which raises the overtime rate. This tool does not model that; it only applies one percentage to straight-time hours. If you regularly work overtime on differential shifts, check with your payroll department or the US Department of Labor guidance on the regular rate of pay, and confirm how your paycheck was computed.
When every entered hour is eligible, the effective rate is simply the base rate times one plus the differential percentage. It only differs from that if hours are entered as zero, in which case the tool returns zero to avoid dividing by zero. Use the effective rate to compare a day shift at a higher base pay with a night shift at a lower base but a premium, and remember to account for non-pay factors such as sleep disruption, commute and childcare when deciding.
If your pay stub shows a differential line, multiply the differential hours by your base rate and by the percentage and compare. A mismatch of a few cents can come from rounding, but a larger gap is worth raising with payroll. Keep in mind the figures here are gross, before taxes and deductions.
They vary widely by industry and employer -- commonly 5-15% for evening shifts and 10-20%+ for overnight or weekend shifts, but check your specific pay policy for the exact figure.
This calculator assumes all entered hours are differential-eligible (e.g. an entire night shift) -- if only part of your shift qualifies, calculate that portion separately.
No -- shift differential is a premium for working undesirable hours, while overtime pay is a premium for working beyond a threshold number of hours; the two can apply independently and even stack.
Divide the premium by your base hourly rate and multiply by 100. A $1.50 add-on on a $15 base rate is a 10 percent differential.
Because the tool applies the premium to all entered hours, so the blended rate equals the base rate increased by that percentage. It only differs if you run a mixed shift in separate calculations.
No. Base pay, differential pay and total pay are all gross amounts before withholding and deductions.
The math will work, but it would mean more than doubling pay, which is unusual. Double-check the figure if you get an unexpectedly large result.
Reference: U.S. Department of Labor