Hours Calculator
Enter a start and end date and time to calculate the total hours.
⏱️ Hours Calculator – Accurately Track and Manage Time
Whether you’re a freelancer tracking billable hours, a manager logging shift durations, or a student calculating study time, an Hours Calculator is a valuable tool. It helps you quickly and accurately:
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Add or subtract time
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Convert hours and minutes
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Calculate total hours worked
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Determine time intervals
📘 What Is an Hours Calculator?
An Hours Calculator is a digital utility that helps you compute the difference between two time values, add or subtract time, or convert minutes to decimal hours.
Types of calculations include:
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Time Duration Between Two Times (e.g., 9:00 AM to 5:30 PM)
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Add/Subtract Hours and Minutes
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Total Hours Worked across multiple shifts or tasks
⏳ Time Duration Formula
Duration=End Time−Start Time\text{Duration} = \text{End Time} – \text{Start Time}
For overnight shifts:
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If the end time is earlier than start time, it assumes the shift crosses midnight.
📊 Common Use Cases
| User Type | Purpose |
|---|---|
| Employees | Track shift hours or overtime |
| Freelancers | Log billable hours for invoices |
| Project Managers | Monitor task durations |
| Teachers/Students | Record lecture or study sessions |
| Event Planners | Calculate event setup or cleanup windows |
🧮 Example Calculations
🕒 1. Duration Between Two Times
| Start Time | End Time | Total Time |
|---|---|---|
| 09:00 AM | 05:30 PM | 8 hrs 30 min |
| 10:45 PM | 02:15 AM | 3 hrs 30 min |
🔁 Handles overnight shifts seamlessly.
➕ 2. Add/Subtract Time
| Operation | Start Time | Adjustment | Result Time |
|---|---|---|---|
| Add | 01:00 PM | +2h 45m | 03:45 PM |
| Subtract | 06:30 AM | -1h 15m | 05:15 AM |
💼 Time Log Summary Table
| Date | In Time | Out Time | Break | Total Worked |
|---|---|---|---|---|
| 2025-05-13 | 09:00 | 17:00 | 1 hr | 7 hrs |
| 2025-05-14 | 08:30 | 18:00 | 0.5 hr | 9 hrs |
| 2025-05-15 | 10:00 | 16:30 | 1 hr | 5.5 hrs |
📌 Great for payroll processing or productivity tracking.
🛠️ Features of a Great Hours Calculator
| Feature | Benefit |
|---|---|
| 12-hour & 24-hour format | Choose based on your region or preference |
| Decimal or HH:MM output | Compatible with spreadsheets or invoices |
| Time zone agnostic | Works offline or without daylight issues |
| Auto total function | Sum multiple durations instantly |
| Export option | Download logs as CSV or PDF |
📏 Time Conversion Table
| Hours | Decimal Format | Minutes |
|---|---|---|
| 1:30 | 1.5 | 90 |
| 2:15 | 2.25 | 135 |
| 3:45 | 3.75 | 225 |
| 5:00 | 5.0 | 300 |
💡 Use decimals for spreadsheets, payroll, or tax forms.
❓ FAQs – Hours Calculator
1. Can I use this to track employee time?
Yes! You can calculate shift durations, breaks, and daily totals—perfect for attendance or payroll.
2. Does it support overnight shifts?
Absolutely. If your end time is earlier than the start, it assumes the time crosses midnight.
3. Can I export my results?
Most advanced tools let you copy or download results as a CSV or PDF file for sharing or recordkeeping.
4. Can I calculate weekly hours?
Yes, by entering multiple time blocks and summing the durations, you can easily track weekly totals.
5. Does it work on mobile?
Yes. Many hours calculators are mobile-optimized, letting you track time on the go.
🏷️ 8 SEO Tags
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Hours Calculator
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Time Duration Calculator
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Work Hours Tracker
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Add and Subtract Time
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Total Hours Worked
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Shift Time Calculator
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Time Sheet Calculator
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Daily Hours Logger