You just looked at your hours for the week and realized you put in more than 40. Now you want to know exactly what your paycheck should show. Calculating time and a half is not complicated once you understand the formula, but a single mistake in the math can mean you walk away with less than you earned.
This guide walks you through the full calculation from start to finish. You will see the formula, three real-world examples using common hourly rates, the most frequent mistakes workers make, and a clear explanation of your rights under federal law. By the end, you will know your overtime pay down to the cent before your paycheck even arrives.
If you want the result instantly, use our free time and a half calculator at timeandhalfcalc.com/time-and-a-half-calculator/. Enter your hourly rate and hours worked and you get the full breakdown in seconds. The rest of this guide explains the math behind it so you can verify every number yourself.
What Is Time and a Half?
Time and a half is an overtime pay rate equal to one and a half times your regular hourly wage. If you earn $18.00 per hour, your time and a half rate is $27.00 per hour. You receive that elevated rate for every hour you work beyond 40 in a single workweek.
The rule is established by the Fair Labor Standards Act, the federal law that governs minimum wage and overtime in the United States. Under the FLSA, most hourly employees are entitled to overtime pay at a rate not less than 1.5 times their regular rate for hours worked above 40 per workweek. Some states set stricter rules on top of the federal baseline, but the federal floor applies across all 50 states.
There is one common misconception worth clearing up before we get into the calculation. Time and a half refers to your pay rate, not extra time. It does not mean you work one and a half hours for every hour of overtime. It means you earn one and a half times more money for each overtime hour you work.
The FLSA definition: Overtime is triggered by hours worked, not hours scheduled. If your employer schedules you for 38 hours but you end up working 43, you are owed overtime pay on those 3 extra hours regardless of what the schedule said.
The Time and a Half Formula
The entire calculation comes down to three steps. Every legitimate payroll calculation follows this same structure.
Step 1: Overtime Rate = Regular Hourly Rate x 1.5 Step 2: Overtime Pay = Overtime Rate x Overtime Hours Worked Step 3: Total Weekly Pay = (Regular Rate x 40 Hours) + Overtime Pay
That is the complete formula. The FLSA requires this structure, and your employer is legally obligated to follow it. If your paycheck does not match this calculation, there may be an error worth investigating.
Step-by-Step Calculation With a Real Example
Let us walk through this with an actual number. Say you earn $20.00 per hour and worked 47 hours this week. Here is exactly how your overtime pay is calculated.
Your situation: $20.00/hour, 47 hours worked this week
- Step 1: Overtime Rate = $20.00 x 1.5 = $30.00 per overtime hour
- Step 2: Overtime Hours = 47 – 40 = 7 overtime hours
- Step 3: Overtime Pay = $30.00 x 7 = $210.00
- Step 4: Regular Pay = $20.00 x 40 = $800.00
Total Weekly Pay: $800.00 + $210.00 = $1,010.00
You can run this same calculation for any hourly rate and any number of overtime hours. The formula never changes.
Time and a Half Rates for Common Hourly Wages
The table below shows the time and a half rate for the most commonly searched hourly wages. Each figure is calculated using the same formula above: Rate x 1.5.
| Regular Hourly Rate | Time and a Half Rate | Pay for 5 OT Hours | Pay for 10 OT Hours |
| $12.00 | $18.00 | $90.00 | $180.00 |
| $14.50 | $21.75 | $108.75 | $217.50 |
| $15.00 | $22.50 | $112.50 | $225.00 |
| $16.50 | $24.75 | $123.75 | $247.50 |
| $18.00 | $27.00 | $135.00 | $270.00 |
| $20.00 | $30.00 | $150.00 | $300.00 |
| $22.50 | $33.75 | $168.75 | $337.50 |
| $25.00 | $37.50 | $187.50 | $375.00 |
| $30.00 | $45.00 | $225.00 | $450.00 |
| $32.00 | $48.00 | $240.00 | $480.00 |
For rates not listed here, use the time and a half calculator (timeandhalfcalc.com/time-and-a-half-calculator/) to get an exact figure. You can enter any rate, including amounts with cents like $17.25 or $23.50.
Three More Full Calculation Examples
Seeing the formula applied to different situations helps lock in the logic. Here are three additional examples covering the wage ranges most workers fall into.
Example 1: $15.00 per Hour, 45 Hours Worked
Step 1: $15.00 x 1.5 = $22.50 overtime rate
Step 2: 45 – 40 = 5 overtime hours
Step 3: $22.50 x 5 = $112.50 overtime pay
Step 4: $15.00 x 40 = $600.00 regular pay
Total: $600.00 + $112.50 = $712.50
Example 2: $25.00 per Hour, 50 Hours Worked
Step 1: $25.00 x 1.5 = $37.50 overtime rate
Step 2: 50 – 40 = 10 overtime hours
Step 3: $37.50 x 10 = $375.00 overtime pay
Step 4: $25.00 x 40 = $1,000.00 regular pay
Total: $1,000.00 + $375.00 = $1,375.00
Example 3: $14.50 per Hour, 43 Hours Worked
Step 1: $14.50 x 1.5 = $21.75 overtime rate
Step 2: 43 – 40 = 3 overtime hours
Step 3: $21.75 x 3 = $65.25 overtime pay
Step 4: $14.50 x 40 = $580.00 regular pay
Total: $580.00 + $65.25 = $645.25
Notice that the 40-hour threshold is always the dividing line. It does not matter if you worked those hours across three days or six. What counts is the total within one workweek.
How Holiday Pay Interacts With Overtime
Many employees assume that working on a holiday automatically means time and a half. Under federal FLSA law, that is not the case. The FLSA does not require premium pay for holidays. Holiday pay is a matter of employer policy, union agreements, or state law, not federal mandate.
That said, many employers do offer time and a half for holiday work as a benefit. If yours does, the calculation works exactly the same as regular overtime: multiply your hourly rate by 1.5 and multiply that by the holiday hours worked.
If your employer pays holiday time at the 1.5x rate, our time and a half calculator (timeandhalfcalc.com/time-and-a-half-calculator/) includes a separate Holiday Hours field so you can add those earnings to your weekly total in one step.
Where it gets more complex is when holiday hours push your week over 40 total hours. In that case, you are also entitled to FLSA overtime on those additional hours regardless of whether your employer would have paid holiday premium. Both rules apply separately.
Understanding Time and a Half vs. Double Time
Once you understand time and a half, double time follows the same logic at a higher rate. Double time means you earn exactly twice your regular hourly rate. It applies in specific situations, most notably in California.
Under California law, employees are entitled to double time pay when they work more than 12 hours in a single workday, or when they work seven consecutive days in a workweek and put in more than 8 hours on that seventh day. Federal law does not mandate double time, so this is a state-specific rule.
Double Time Rate = Regular Hourly Rate x 2.0 Example: $20.00 x 2.0 = $40.00 per double time hour
If you work in California or another state with double time provisions, use our double time calculator (timeandhalfcalc.com/double-time-calculator/) to get your accurate rate. You can also calculate double time alongside regular overtime in our full overtime pay calculator (timeandhalfcalc.com/overtime-pay-calculator/), which handles both multipliers at once.
Five Mistakes That Lead to Incorrect Overtime Pay
These are the errors that show up most often when workers or employers calculate overtime incorrectly. Knowing them helps you catch discrepancies before payday becomes a problem.
Mistake 1: Thinking Overtime Resets After Eight Hours
Federal overtime law calculates based on a full workweek, not a single day. You do not automatically earn overtime just because you work nine hours on Monday. You earn it when your total hours for the week cross 40. California is the primary exception, where daily overtime applies after 8 hours in a day. For the rest of the country, the weekly 40-hour threshold is what matters.
Mistake 2: Using the Wrong Workweek Start
Your employer sets the workweek start day, and it does not have to be Monday. If your company’s workweek runs from Wednesday to Tuesday, then overtime is calculated within that Wednesday-to-Tuesday window, not a Monday-to-Sunday calendar week. Make sure you know your employer’s designated workweek before counting your overtime hours.
Mistake 3: Excluding Tips or Bonuses From the Regular Rate
The FLSA requires that certain types of additional pay be included in your regular rate before overtime is calculated. Non-discretionary bonuses, production bonuses, and commissions earned in the workweek all factor into the base rate used for the 1.5x calculation. Discretionary bonuses, gifts, and holiday bonuses are typically excluded. This is one of the more technical aspects of overtime law, and employers sometimes get it wrong in ways that reduce what workers are owed.
Mistake 4: Counting Only Scheduled Hours Instead of Hours Worked
Overtime is based on hours actually worked, not hours scheduled. If you stayed late on three nights and your total worked hours exceeded 40, you are owed overtime on those extra hours even if your scheduled shift was only 37 hours. Time spent working, even off the clock at an employer’s direction, counts toward the 40-hour threshold.
Mistake 5: Confusing Time and a Half With One and a Half Extra Hours
This one comes up regularly. Time and a half is a pay rate multiplier, not an extra time concept. Earning time and a half does not mean you are paid for 1.5 hours for each overtime hour. It means you receive 1.5 times your regular dollar-per-hour rate for each actual overtime hour worked. The time stays the same. The pay rate changes.
Who Qualifies for Overtime Pay Under the FLSA
Not every worker is entitled to federal overtime pay. The FLSA divides employees into two categories: non-exempt and exempt. Non-exempt employees must be paid overtime when they work more than 40 hours in a workweek. Exempt employees are not entitled to overtime under federal law.
To qualify as exempt under the FLSA’s white collar exemptions, an employee generally must meet all three of these tests:
- They must be paid on a salary basis (not hourly)
- They must earn at least the minimum salary threshold set by the Department of Labor
- Their job duties must fall into an exempt category such as executive, administrative, or professional functions
Meeting only one or two of these tests is not enough. All three must apply. Many workers who believe they are exempt are actually entitled to overtime because their job duties do not genuinely qualify under the FLSA standards. If you are uncertain about your classification, that is worth examining closely.
It is also worth noting that being paid a salary does not automatically make you exempt. The job duties test is what matters most. A salaried employee who does not meet the duties test for an exemption is still entitled to overtime pay.
A note on state law: Several states have overtime rules that are more generous than the federal FLSA. California, for example, also requires overtime after 8 hours in a single workday. In those states, whichever rule gives the employee more pay applies. Check your state’s labor department website for the specific rules in your location.
How to Verify Your Paycheck Against the Formula
Once you know how to calculate time and a half, verifying your paycheck becomes straightforward. Here is a simple process to run through each pay period when you work overtime.
- Pull up your pay stub and find your total hours worked for the pay period
- Subtract 40 from the total to find your overtime hours (if you worked more than 40)
- Multiply your regular hourly rate by 1.5 to get your overtime rate
- Multiply the overtime rate by your overtime hours to find your overtime pay
- Add that to your regular pay (40 hours x regular rate) to get your expected total
- Compare that expected total to what your pay stub actually shows
If the numbers do not match, the discrepancy is worth raising with your payroll department. Payroll errors happen, and they are more often caught by employees who check their own math than by employers who discover the mistake independently.
For weeks where your hours vary across multiple days, our weekly overtime calculator (timeandhalfcalc.com/weekly-overtime-calculator/) lets you enter hours for each day of the workweek. It automatically identifies which hours qualify as overtime and gives you the exact breakdown for your verification.
Calculate Your Overtime Pay in Seconds
Enter your hourly rate and total hours worked. Get your time and a half rate, overtime pay, and weekly total instantly. No signup, no fees, completely free.
What to Do if You Believe You Were Underpaid
If your calculation shows a discrepancy with your pay stub, your first step is to document it. Write down the dates, hours worked, your hourly rate, and the expected vs. actual amounts. Then bring that documentation to your payroll or HR department and ask for clarification.
Most overtime discrepancies are payroll errors that get corrected once flagged. If your employer is unwilling to address a legitimate discrepancy, you have formal options. The U.S. Department of Labor’s Wage and Hour Division investigates FLSA overtime complaints. You can file a complaint without a lawyer, and the WHD can recover up to two years of back wages in straightforward cases.
Workers who experience retaliation for filing a wage complaint are protected under the FLSA’s anti-retaliation provisions. Losing your job or facing adverse employment action because you reported an overtime violation is itself a separate violation of federal law.
For situations involving state law claims, your state’s labor department is the appropriate body to contact. State agencies handle violations of state-specific overtime rules, and many states allow workers to recover additional damages beyond back pay.
Frequently Asked Questions
What is the formula for time and a half?
The formula is: Overtime Rate = Hourly Rate x 1.5. Multiply that by the number of overtime hours, then add it to your regular pay (40 hours x hourly rate) to get your total weekly earnings.
When does time and a half start?
Under federal FLSA law, time and a half starts after you work more than 40 hours in a single workweek. Some states, most notably California, also require daily overtime after 8 hours in one workday. Check your state labor laws for any local rules that exceed the federal standard.
Does time and a half mean 1.5 extra hours?
No. Time and a half is a pay rate, not an extra time concept. It means you earn 1.5 times your regular hourly rate for every overtime hour. If you earn $20 per hour, your overtime rate is $30 per hour. You are paid more per hour, not more hours than you worked.
How do I calculate time and a half for $20 an hour?
Multiply $20.00 by 1.5 to get $30.00. That is your overtime rate per hour. For example, if you work 45 hours in a week, your 5 overtime hours are each paid at $30.00, giving you $150.00 in overtime pay on top of your regular $800.00 for the first 40 hours.
Is holiday pay the same as time and a half?
Federal law does not require overtime or premium pay for holidays. Whether you receive time and a half for holiday work depends on your employer’s policy or your state’s labor laws. The calculation method is identical if your employer does offer it: hourly rate x 1.5 x holiday hours worked.
Does overtime reset every week?
Yes. Overtime eligibility resets at the start of each new workweek as defined by your employer. Hours do not carry over from one week to the next. If you work 44 hours one week and 36 hours the next, you earn overtime on those 4 extra hours in week one and no overtime in week two.
What is the difference between time and a half and double time?
Time and a half pays you 1.5 times your regular rate. Double time pays you exactly 2 times your regular rate. Federal law does not mandate double time, but California requires it for hours worked beyond 12 in a single workday and for the seventh consecutive workday in a workweek. Use our double time calculator (timeandhalfcalc.com/double-time-calculator/) if your situation involves that rate.
Key Takeaways
Knowing how to calculate time and a half is one of the most practical things a working adult can keep in their back pocket. You do not need to be an accountant to verify your own pay. The formula is three steps, and it has not changed in decades because the FLSA has held this standard since 1938.
Your regular hourly rate multiplied by 1.5 gives you the overtime rate. That rate applied to your overtime hours gives you your overtime pay. Add that to your regular 40-hour pay and you have your total. If your paycheck does not match that math, you have every right to ask why.
Use the time and a half calculator (timeandhalfcalc.com/time-and-a-half-calculator/) any time you want the result without doing the arithmetic yourself. It handles standard overtime, double time, holiday hours, and weekly totals in one place. Every calculation follows the FLSA formula and runs entirely in your browser with no data collected.
For more detail on how weekly overtime is tracked across a full seven-day period, see our weekly overtime calculator (timeandhalfcalc.com/weekly-overtime-calculator/). For situations involving extended shifts or California law, the double time calculator (timeandhalfcalc.com/double-time-calculator/) covers those scenarios specifically.
Disclaimer: This article is for informational purposes only and does not constitute legal or financial advice. Overtime rules vary by state, employer policy, and individual employment contracts. Always consult your HR department or a qualified employment attorney for guidance specific to your situation. Calculations are based on U.S. federal FLSA guidelines.
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