How many overtime hours in a 45-hour week?
5 overtime hours and 40 regular hours when using a 40-hour weekly threshold (45 − 40 = 5).
Find how many hours count as regular vs overtime. Use daily mode for one shift with a configurable threshold, or weekly mode to split hours above 40 (or your custom weekly limit). Dollar pay is on the Overtime Pay Calculator.
Runs in your browser · No data stored · No signup
An overtime hours calculator splits total worked hours into regular hours (at or below a threshold) and overtime hours above that threshold—without calculating pay dollars.
Federal FLSA commonly uses a 40-hour weekly threshold for non-exempt workers—state daily rules may differ. This tool is for hour planning, not legal eligibility determinations.
Use this free overtime hours calculator to quickly calculate total hours worked, including break deductions and overtime. Ideal for employees, freelancers, and payroll tracking.
Also known as an overtime hours calculator or weekly OT hours split tool.
You worked 7.50 hours → 0.00 hours overtime
Total Hours
7.50
Overtime Hours
0.00
Regular Hours
7.50
✔ Works entirely in your browser
✔ Supports daily & weekly overtime
✔ Includes break deduction
Work Hours Calculator - Complete daily and weekly work-hour tracking.
Daily Work Hours Calculator - Calculate daily shifts with break deduction.
Weekly Work Hours Calculator - Add up weekly hours and check weekly overtime.
Time Duration Calculator - Calculate elapsed time between two times.
This overtime hours calculator helps you calculate overtime hours quickly for daily and weekly checks.
An overtime hours calculator helps you quickly identify regular vs overtime hours. A time and a half calculator is often used for overtime pay calculation, where overtime hours may be paid at 1.5x. This tool focuses on overtime hour totals, so you can validate overtime before payroll.
Overtime hours = net worked hours − overtime threshold. Example with an 8-hour daily threshold: worked 10 hours → 10 − 8 = 2 overtime hours. Net worked hours = (end time − start time) − unpaid break. For a 7:00 AM to 6:00 PM shift with 30 minutes break: 11 hours − 0.5 = 10.5 net hours. Overtime hours = 10.5 − 8 = 2.5 hours. Regular hours = 8, overtime = 2.5.
It depends on your jurisdiction and employer policy. Federal US law (FLSA) uses a weekly threshold: overtime kicks in above 40 hours per week, not per day. However, California uses both: daily overtime (over 8 hours/day at 1.5×, over 12 hours/day at 2×) and weekly overtime (over 40 hours/week). The UK and most European countries don't mandate a specific overtime multiplier — it's set by contract. Check your employment contract for your specific daily and weekly thresholds.
Yes — only net worked hours (after subtracting unpaid breaks) count toward overtime thresholds. If you work 9:00 AM to 6:00 PM (9 hours) with a 1-hour unpaid lunch, your net worked hours are 8 — no overtime. If your break is paid, don't subtract it; paid breaks remain part of compensable work time. Enter only unpaid break minutes in this calculator.
Overtime earnings = regular hours × base rate + overtime hours × (base rate × overtime multiplier). Example: base rate $20/hour, worked 10 hours, 8-hour threshold, 1.5× multiplier. Regular pay: 8 × $20 = $160. Overtime pay: 2 × ($20 × 1.5) = 2 × $30 = $60. Total gross pay: $160 + $60 = $220. Use the Overtime Pay Calculator to compute the dollar amount once you have the hour breakdown from this tool.
This calculator handles a single shift's overtime based on a daily threshold. For weekly overtime tracking — where your threshold resets each Monday and overtime only triggers after 40 cumulative hours — use the Weekly Work Hours Calculator, which accepts up to 7 days and flags weekly overtime separately. Many employees need both: daily overtime (per shift) and weekly overtime (cumulative). Track daily with this tool and run the weekly total at the end of the week.
Enter either a single shift (clock-in, clock-out, break, daily threshold) or a weekly hour total with a weekly threshold (default 40 hours under common U.S. federal planning models).
Regular hours = min(total net hours, threshold). Overtime hours = max(0, total − threshold).
This page answers how many hours are OT—not how much OT pay you earn. Use Overtime Pay Calculator for 1.5× or 2× dollar math. State daily overtime rules (California, Alaska, etc.) may require different thresholds than a single weekly number; daily mode helps model one long shift.
All calculations run locally in your browser.
OT hours = max(0, net hours − threshold). This page does not compute wages.
Concise answers for common searches — definitions, steps, and comparisons.
5 overtime hours and 40 regular hours when using a 40-hour weekly threshold (45 − 40 = 5).
Regular = min(total, threshold). OT = max(0, total − threshold). Example: 48 h, 40 threshold → 40 regular, 8 OT.
Regular hours = min(net hours, threshold). Overtime hours = max(0, net hours − threshold). Daily mode derives net hours from clock times minus break minutes first.
Formula
OT hours = max(0, net hours − threshold)Daily: one shift with clock times and break. Weekly: enter total hours already summed for the workweek.
Daily mode computes net hours from clock-in/out minus break. Weekly mode uses your entered total (e.g., 45.0).
Weekly default 40 hours. Daily default 8 hours—adjust for employer or state planning scenarios.
Copy regular and OT hour counts to a timesheet or open Overtime Pay Calculator to convert OT hours to gross pay.
Input
Total hours 45 · Weekly threshold 40Output
Regular 40 · Overtime 545 − 40 = 5 overtime hours under a 40-hour weekly threshold model.
Input
Total hours 48 · Weekly threshold 40Output
Regular 40 · Overtime 8Common full-time + two extra days scenario—8 hours count as OT in weekly mode.
Input
9:00–19:30 · 30 min break · Daily threshold 8 hOutput
Regular 8 · Overtime 2Net 10 h worked − 8 h threshold = 2 daily OT hours (state rules may differ).
Input
9:00–18:30 · 30 min break · Daily threshold 8 hOutput
Regular 8 · Overtime 19.0 net hours − 8.0 threshold = 1.0 OT hour for that shift in daily mode.
Common real-world scenarios where this tool saves time.
Enter total hours from your timesheet to see how many hours exceed 40 in weekly mode.
Use daily mode when a single shift exceeds an 8-hour daily threshold in states with daily OT rules.
Get OT hour count here, then enter rate and hours in Overtime Pay Calculator for gross dollars.
Compare portal OT hours against an independent hour split before submitting a dispute.
Step-by-step chains that connect related tools for common tasks.
| Tool | Output | When to use |
|---|---|---|
| Overtime Hours Calculator (this page) | Regular + OT hour counts | Timesheet hour split |
| /overtime-pay-calculator | Gross $ at 1.5× / 2× | Paycheck OT dollar estimate |
| /time-and-a-half-calculator | OT rate + pay for given hours | Quick 1.5× wage math |
| /work-hours-calculator | Weekly grid + OT split | Clock times Mon–Sun |
| Total hours | Regular | Overtime |
|---|---|---|
| 40.0 | 40.0 | 0 |
| 42.5 | 40.0 | 2.5 |
| 45.0 | 40.0 | 5.0 |
| 48.0 | 40.0 | 8.0 |
Planning reference—your employer's workweek definition and state rules may differ.
This tool returns hours only. Overtime Pay Calculator and Time and a Half Calculator handle wage math.
In daily mode, enter unpaid break minutes so net hours reflect time actually worked.
Some states use daily OT, union contracts differ, and exempt employees may not receive OT—confirm with HR.
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Subtract 40 from total weekly hours worked. Example: 43 total hours → 3 overtime hours, 40 regular hours. Enter 43 in weekly mode with threshold 40 to verify.
Under common U.S. federal FLSA planning, non-exempt employees often receive OT after 40 hours in a workweek—but California and other states add daily rules. This calculator uses the threshold you enter; confirm rules with your employer.
No—hours only. Use Overtime Pay Calculator to multiply OT hours by your rate at 1.5× or 2×.
This page splits regular vs OT hours. Overtime Pay Calculator converts those hours into gross dollars using hourly rate and multipliers.
Time and a Half Calculator computes the OT rate and pay for a given hourly wage. This page only counts how many hours are overtime.
Weekly mode when you already have a workweek total (e.g., 45 hours). Daily mode for one shift when modeling daily OT thresholds (e.g., over 8 hours in a day).
Sum daily net hours in Work Hours Calculator (weekly grid), then enter the weekly total here—or use Work Hours Calculator's built-in weekly OT split.
No. Calculations run locally in your browser.
Overtime Hours Calculator keeps inputs on your device—nothing uploaded for core calculations.
Hour-split planning model only—not legal OT eligibility, payroll processing, or tax advice. Employer and state rules may differ.
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Reviewed by EverydayTools Editorial Team on 2026-09-01.
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