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Date and time
This section covers time arithmetic: shift length, converting hours and minutes into decimal hours, unpaid breaks and shifts that cross midnight.
Every calculator is free and needs no account, and the link to a result can be copied and shared.
Calculators in this section
Complete alphabetical list · 9
- Age Calculatorage calculatorOpen →
- Business Days Calculatorbusiness days calculatorOpen →
- Date Calculatordate calculatorOpen →
- Days Between Dates Calculatordays between dates calculatorOpen →
- Days Until Calculatordays until calculatorOpen →
- Expiration Date Calculatorexpiration date calculatorOpen →
- Time Duration Calculatortime duration calculatorOpen →
- Time Zone Convertertime zone converterOpen →
- Work Hours Calculatorwork hours calculatorOpen →
What these calculators do
- Shift length with the break removed and overnight handling.
- Hours and minutes converted to decimal hours for payroll.
- Shift pay from an hourly rate.
Why time is easy to get wrong
Time is not decimal: an hour holds 60 minutes and a day holds 24 hours. Column arithmetic slips easily here, especially when a shift ends after midnight or a break has to come out of it.
Frequently asked questions
Do I need an account?
No, every calculator in this section is free and open.
Are overnight shifts supported?
Yes, a shift crossing midnight is detected automatically.
Can I share a calculation?
Yes — the values live in the page address, and the button under the calculator copies the link.