How to Calculate Weekly Pay With Overtime Hours

You worked 47 hours this week instead of your usual 40, and you want to know what that actually means for your paycheck before it arrives — not after, when there’s nothing left to question if the math looks off. Overtime pay isn’t just “a bit extra” tacked on; it’s typically calculated at a specific multiplier (commonly 1.5×, sometimes 2× for certain thresholds) applied only to the hours beyond your regular threshold, which makes the arithmetic more involved than a flat hourly rate times total hours.

Getting this wrong by hand is easy, especially once the regular-hours threshold and multiplier both need to be applied correctly to just the overtime portion, not the whole week.

What overtime pay calculation actually involves

The core idea is that hours up to a threshold (commonly 40 per week, though this varies by jurisdiction and employment agreement) are paid at your regular hourly rate, and hours beyond that threshold are paid at a multiplier — 1.5× (“time and a half”) is the most common, with 2× (“double time”) sometimes applying beyond an even higher threshold or under specific circumstances.

So for 47 hours at a $20 hourly rate with a 40-hour threshold and 1.5× multiplier: 40 hours at $20 = $800, plus 7 overtime hours at $30 (1.5× $20) = $210, for a total of $1,010 — not the $940 you’d get from naively multiplying all 47 hours by $20.

Why people get stuck here

• The multiplier only applies to overtime hours, not the whole week. A common mistake is multiplying the entire week’s hours by the overtime rate instead of just the hours above the threshold.
• Thresholds vary by jurisdiction and agreement. The standard 40-hour threshold isn’t universal — some places or contracts use different thresholds, or different rules for daily versus weekly overtime.
• Double time adds another layer. Some situations apply a 2× multiplier beyond a second, higher threshold, which most manual calculations forget to account for.
• Manual calculation invites arithmetic slips. Splitting hours into regular and overtime buckets, applying two different rates, and adding them back together is more steps than a simple hourly calculation.

What a good overtime pay calculator looks like

Splits regular and overtime hours correctly

The calculator should apply your regular rate only to hours up to the threshold, and the overtime multiplier only to hours beyond it — not the whole week at one rate.

Lets you adjust the threshold and multiplier

Since these vary by jurisdiction and employer, being able to set both explicitly rather than assuming a fixed 40-hour, 1.5× default keeps the calculation accurate to your actual situation.

Shows the full breakdown

Seeing regular pay and overtime pay separately, alongside the total, makes it easy to verify the calculation against your own paystub.

Common mistakes to avoid

• Applying the overtime multiplier to all hours worked instead of just the hours beyond the regular threshold.
• Assuming every job uses a 40-hour weekly threshold and 1.5× multiplier without checking your specific employment agreement or local regulations.
• Forgetting that some situations involve daily overtime thresholds (extra pay for hours beyond a certain number in a single day) in addition to or instead of weekly thresholds.
• Not accounting for a double-time threshold if your situation includes one.

How to do it with the Overtime Pay Calculator

Online Tool Store’s Overtime Pay Calculator works out total weekly pay including overtime entirely in your browser.

1. Enter your hourly rate and total hours worked for the week.
2. Set your regular-hours threshold and overtime multiplier.
3. See regular pay, overtime pay, and the total calculated separately.
4. Adjust any input to check a different scenario.

Because it’s instant, it’s a fast way to check your expected pay against an actual paystub before assuming a discrepancy is an error — or catching one that genuinely is.

Frequently asked questions

Is overtime always paid at 1.5x the regular rate?

1.5× (“time and a half”) is the most common multiplier, but it’s not universal — some jurisdictions, industries, or employment agreements use different multipliers, or apply 2× (“double time”) beyond a higher threshold. Check your specific employment terms and local regulations.

Does overtime apply per day or per week?

Both models exist — many places calculate overtime based on total weekly hours beyond a threshold, while some jurisdictions or agreements also (or instead) apply daily overtime for hours worked beyond a certain number in a single day.

Why does my calculated overtime pay not match my paystub?

Check whether your employer uses a different regular-hours threshold or multiplier than the common defaults, whether any of your hours were classified differently (like holiday pay, which sometimes has its own rate), and whether any pre-tax deductions are affecting the final take-home number versus the gross calculation.

Final thought

Overtime math goes wrong in a specific, predictable way — applying the multiplier to the wrong hours — and a calculator that splits regular and overtime pay explicitly is the fastest way to catch that mistake before it costs you an accurate paycheck expectation.

Try the free Overtime Pay Calculator