Free Time and a Half Calculator
Use the free calculator below to find your time-and-a-half rate and overtime pay instantly, or keep reading to learn the formula and calculate it yourself. Either way, this is one of the most common payroll questions there is, and getting it wrong is an easy way to underpay or overpay an employee without anyone noticing until it's already happened a few times.
What Is Time and a Half?
Time and a half is a pay rate equal to 1.5 times an employee's regular hourly rate, most commonly paid for overtime hours. If someone earns $20 per hour, their time-and-a-half rate is $30 per hour for every overtime hour they work.
The Time and a Half Formula
Overtime Pay = Overtime Hours × Time and a Half Rate
For example, an employee earning $18 per hour who works 5 overtime hours in a week would calculate it like this:
5 × $27 = $135 in overtime pay
⏱ Time and a Half Calculator
Enter an hourly rate and hours worked to calculate pay instantly.
When Do You Earn Time and a Half?
Under federal law (the Fair Labor Standards Act), non-exempt employees earn time and a half for every hour worked beyond 40 in a single workweek. The workweek is a fixed, recurring 7-day period that the employer defines, not a calendar week or a pay period, and overtime is always calculated against that single week, never averaged across two weeks in a biweekly pay period.
Some states layer on additional rules. California is the most notable example, requiring daily overtime once an employee works more than 8 hours in a single workday, in addition to the standard weekly threshold.
Time and a Half vs Double Time
| Factor | Time and a Half | Double Time |
|---|---|---|
| Multiplier | 1.5× regular rate | 2× regular rate |
| Federal requirement | Required after 40 hours/week | Not required under federal law |
| California trigger | Hours 8–12 in a single workday | Hours beyond 12 in a single workday |
| Example at $20/hr | $30.00/hr | $40.00/hr |
Common Mistakes When Calculating Time and a Half
The most common mistake is calculating overtime against the pay period instead of the workweek. In a biweekly or semimonthly pay period, each individual week inside that period has to be checked separately, since a two-week total can look perfectly fine while one specific week inside it actually triggered overtime. A second common mistake is leaving non-discretionary bonuses and commissions out of the regular rate before calculating overtime, when in many cases they're required to be folded in, which quietly understates the true time-and-a-half rate. Misclassifying an employee as exempt when they don't actually meet the salary and duties test is another frequent and costly error, since it strips away overtime they were legally owed. And in states with daily overtime rules like California, tracking only the weekly total instead of each individual day will miss overtime that was earned and never paid.
How Updoot Makes This Automatic
Doing this calculation by hand for one employee in one week is simple enough. Doing it correctly for a whole team, every week, across different states and pay rates, is where manual tracking starts to break down. Updoot calculates daily, weekly, and California overtime automatically as time is tracked, applies the correct pay rates and multipliers without anyone running a formula by hand, and exports everything in a payroll-ready format. The calculation above is exactly what's happening behind the scenes, just running automatically across every employee instead of one at a time.
Related Reading
Is Mandatory Overtime Legal? →
How to Convert Hours and Minutes to Decimal in Excel and Template →
Frequently Asked Questions
Final Takeaway
Time and a half comes down to one formula: hourly rate times 1.5, multiplied by overtime hours. The math is simple. What trips businesses up is the workweek rule, daily overtime in states like California, and folding bonuses into the regular rate correctly. Use the calculator above any time you need a fast, accurate number instead of doing the math by hand.