Timesheet Calculator — Calculate Total Hours Worked for the Week or Month

Timesheet Types

How to Use the Timesheet Calculator

1. Open the timesheet calculator.
2. For each working day, enter your start time and end time. Leave blank for days off.
3. Enter your break duration in minutes for each day (any unpaid breaks are deducted from the hours worked).
4. Set your hourly rate to calculate estimated gross weekly pay.
5. Set your overtime threshold (e.g., 40 h/week for US; 48 h/week for UK). Hours above this are flagged as overtime.
6. The calculator shows daily hours, weekly total, overtime hours, and estimated pay — with a summary card you can save or print.

How Timesheet Hours Are Calculated

For each working day:

Net hours = (End time − Start time) − Break duration

Example: Start 8:45, End 17:30, Break 45 min. Raw hours = 17:30 − 8:45 = 8h 45min. Break deduction: 45 min. Net hours = 8h 45min − 0h 45min = 8h 00min = 8.00 hours.

For time calculations, it is convenient to convert to decimal hours:

• 15 minutes = 0.25 hours
• 30 minutes = 0.50 hours
• 45 minutes = 0.75 hours

Example: 7h 45min = 7.75 hours. Daily hours across the week are summed to give weekly total hours.

Common Timesheet Errors

Timesheet for Freelancers and Contractors

For freelancers billing clients, a timesheet does double duty — it records hours for pay calculation and provides the basis for invoicing. Best practices:

• Track time at the task or project level, not just daily totals
• Record time in real time rather than reconstructing from memory at week's end
• Note the specific work done (brief description) alongside hours for invoice line items
• Keep timesheets for at least 5 years for HMRC self-assessment purposes
• Distinguish billable hours (charged to client) from non-billable (admin, learning, business development)

The invoice generator allows you to turn timesheet totals directly into a professional invoice.

Timesheet Compliance Requirements

UK employers must keep working time records under the Working Time Regulations 1998, specifically to demonstrate compliance with the 48-hour average weekly limit. Workers who have opted out of the 48-hour limit still have their hours recorded to monitor compliance with other provisions (daily/weekly rest, night worker limits).

Minimum record-keeping requirements for employers:

• Records of workers who have signed a 48-hour opt-out
• Working time records demonstrating compliance (especially for night workers)
• Holiday records (to prove statutory minimum leave is being provided)
• Records must be retained for 2 years after the period they cover

For HMRC purposes (minimum wage compliance), employers must retain pay and working time records for 3 years.

Overtime on Timesheets

Overtime handling in UK employment is determined by the employment contract — not by statutory law (unlike the US, where the FLSA mandates 1.5× for hours over 40/week for non-exempt workers).

UK overtime arrangements:

• Paid overtime at standard rate: Additional hours paid at the same hourly rate as regular hours — most common in UK
• Time and a half (1.5×): Extra hours paid at 150% of standard rate — common in manufacturing, healthcare, some hospitality
• Double time: Weekend or bank holiday overtime at 200% — common in some industries and contracts
• Time off in lieu (TOIL): Overtime compensated with equivalent paid time off rather than additional pay — common in public sector and professional services
• Unpaid overtime: Common in salaried roles; must still result in effective hourly pay at or above National Minimum Wage

Automated Time Tracking vs. Manual Timesheets

Manual timesheets (completed at the end of each day or week) introduce memory-based errors and take time to complete. Alternatives:

• Timer apps: Start/stop timers when switching tasks; automatically log time. Examples: Toggl, Clockify (free tier), Harvest.
• Integrated systems: Some project management tools (Jira, Asana, Monday.com) have time tracking built in.
• Clocking-in systems: Physical card swipe, biometric, or phone-based clock-in for employers who need precise attendance records.

For most individuals, the timesheet calculator provides what is needed for payroll or invoicing purposes without software subscriptions.

Common Questions

Do I need to record my hours if I am a salaried employee?

Your employer is required to keep records sufficient to demonstrate Working Time Regulations compliance (particularly the 48-hour week average). As an individual, keeping your own records is advisable if you regularly work long hours — to verify your working time, support any employment tribunal claims, or demonstrate that unpaid overtime is being worked (relevant if seeking a pay review or raising a concern about conditions).

How do I handle rounding time on a timesheet?

For payroll purposes, most employers round to the nearest 15 minutes or 6 minutes (0.1 of an hour). If your contract specifies rounding, apply that consistently. Rounding must not systematically favour the employer — rounds up and rounds down should average out over time. The timesheet calculator shows exact hours; apply rounding manually if required by your employer's policy.

What is the difference between a timesheet and a time card?

These terms are often used interchangeably. A time card traditionally refers to the physical card punched by a clock-in machine, showing exact arrival and departure times. A timesheet is a more comprehensive record — it may cover multiple days, projects, or tasks, and typically includes break deductions and total hours. Both serve the same fundamental purpose: documenting time worked for payroll and compliance.