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Work Hours

Total hours worked and estimated pay.

Work & ProductivityUpdated 2026-04-05• Author: CalcDock Team, Workplace reference editor• Reviewed by: CalcDock Team, Editorial review: illustrative hours/pay math, not legal advice (Apr 2026)

The Work Hours Calculator helps employees, freelancers, and employers track total hours worked and estimate gross pay. Enter your daily start and end times, subtract break durations, set your hourly rate, and get weekly or monthly totals instantly. Whether you're filling out a timesheet, verifying payroll accuracy, invoicing a client for billable hours, or tracking overtime, this tool handles the math. Supports multiple days in a single calculation and automatically computes overtime hours beyond your configured weekly threshold.

When this calculator helps most

Use to sum blocks and subtract unpaid breaks for a rough gross pay estimate when your rules match simple thresholds.

What each input means

Start / End time — Clock times for each work block in 24h or AM/PM as shown in the tool. (time of day)
Break minutes — Unpaid breaks to subtract from gross elapsed time. (minutes)
Hourly rate — Regular pay rate before overtime multipliers unless the UI specifies OT rules. (currency/hr)

Input mistakes to avoid

•Subtract only unpaid breaks; paid breaks belong in worked time per policy.
•Align OT threshold with your contract (weekly vs daily).

Work Hours

Start Time

End Time

Break Duration

min

Hourly Rate (optional)

🔒Inputs are processed in your browser and are not sent to our servers.

Examples

Standard Work Week (5 Days)

9:00 AM–5:00 PM with 1-hour unpaid lunch, 5 days at $25/hr.

→ 35 hours worked, $875 gross pay

Freelance Project — Tracked Hours

3 days: 6.5 hrs, 7 hrs, 5.5 hrs at $80/hr billing rate.

→ 19 hours total, $1,520 billable

Weekly Hours with Overtime

9:00–6:30 PM with 30 min lunch, 5 days. Overtime threshold: 40 hrs.

→ 45 hours worked: 40 regular hrs ($1,200) + 5 overtime hrs at 1.5× ($225) = $1,425 total

Part-Time Schedule Verification

4 days, varying hours: 4h, 5h, 6h, 4h at $18/hr.

→ 19 hours total, $342 gross pay

How to read your results

→Net daily hours ≈ end − start − unpaid breaks (paid short breaks stay in “worked” time per policy).
→Overtime pay here is illustrative — daily thresholds (e.g. CA) and holiday rules are jurisdiction-specific.
→Gross pay estimates exclude taxes, benefits, and employer-side costs.

What this result means

Hours and pay are arithmetic from your inputs — payroll systems may round or apply different OT logic.

Common Pitfalls

⚠️Entering breaks as zero when lunch is unpaid — inflates billable/paid hours.
⚠️Assuming federal 40h OT rules cover every country or every contract.
⚠️Rounding each day differently than payroll — small drift vs official systems.

Tips

✓Record your times daily — memory fades by end of week, and errors in timesheets can be hard to dispute.
✓Check your employment contract for the exact overtime threshold and whether daily overtime applies.
✓For client invoicing, always round to the nearest 15 minutes (0.25 hour) per your contract terms.
✓Keep a separate log per project/client for accurate invoicing when working on multiple engagements.

How to check your results

✓Recompute one day by hand: (end−start) − breaks.

Warnings & Limitations

⚠️Labor law and payroll rules vary — confirm with HR, contract, or counsel for compliance.

What this calculator does not tell you

–Labor law compliance — daily OT, meal periods, or holiday multipliers vary by region.
–Tax withholdings, benefits, or garnishments.

Frequently Asked Questions

How do I calculate my total work hours for the week?

Enter your start and end times for each work day and subtract any break time. Sum the hours across all days. This calculator does it automatically — add each day's hours and it totals them for you.

How is overtime calculated?

In the US, federal overtime law (FLSA) requires 1.5× pay for hours worked beyond 40 per week. Some states have daily overtime thresholds (e.g., California: over 8 hours/day). In Korea and Japan, overtime rules differ — consult your local labor law.

Should I include breaks in my work hours?

Unpaid lunch breaks should not be included in billable or paid hours. Short paid rest breaks (10–15 min) are typically counted as work time. Enter only unpaid break time in the break deduction field.

How do I track hours for freelance invoicing?

Enter each work session's start and end time to get the total billable hours, then multiply by your hourly rate. Keep a running log per project, and use this tool to quickly verify totals before invoicing.

What is the standard number of work hours per year?

A standard full-time year in the US is 2,080 hours (40 hours/week × 52 weeks). In Korea, the legal maximum is 52 hours/week (40 regular + 12 overtime). In Japan, it is typically 40 hours/week with restrictions on overtime.

How do I convert decimal hours to hours and minutes?

The decimal part represents a fraction of an hour. Example: 7.75 hours = 7 hours + (0.75 × 60) = 7 hours 45 minutes. Conversely, 7 hrs 30 min = 7 + 30/60 = 7.5 hours.

Sources & References

Report an issue with this calculator

Editorial & review note

Clock-in/out sums are for informal billing and personal tracking; rounding grids, meal breaks, and statutory overtime are payroll-system concerns, not encoded here.

Editorial Policy