Date Time
Hours Calculator
Compute the number of hours between two date/times.
Free to use — no sign-up or login.
Result
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This free Hours Calculator covers Compute the number of hours between two date/times.
Enter the Hours Calculator fields, then read the output. Date Time calculators on this site keep the formula visible beside the form, with no account required.
Using the Hours Calculator
Compute the number of hours between two date/times. Fill the labeled fields on the Hours Calculator and read the result. The formula stays in How it works rather than being repeated here.
FAQ
How do I use the Hours Calculator?
Enter the labeled values on the Hours Calculator and read the output. Δhours = (t₂ − t₁) / 1 hour.
What formula does the Hours Calculator use?
The Hours Calculator uses the identity in How it works. In words: Δhours = (t₂ − t₁) / 1 hour.