Free Work Hours Calculator
Add up hours worked across any number of shifts — just enter your start and end times and get an instant, accurate total.
Whether you're tallying a single shift or a whole week of scattered hours, this calculator turns clock times into decimal or hours-and-minutes totals instantly, so you can move straight to invoicing or payroll without doing the math by hand.
Clock in / clock out
Accepts "9:00 AM", "9am", or 24-hour "17:30". An overnight shift (out earlier than in) is handled automatically.
Frequently asked questions
Can I add multiple shifts in one calculation?
Yes — add as many shift entries as you need and get a running total.
Does it show hours as decimals or hours:minutes?
Both — the total displays in decimal hours (for billing) and in hours-and-minutes format.
Can I use this for payroll?
Yes — many freelancers and small business owners use it to double-check payroll hours before running pay.
Is it free to use?
Yes, completely free with unlimited use and no signup.