Contact Time Calculator

Report a calculation issue

Include the tool name, the clock format you chose and a small example showing the result you expected. Remove names and private work records before sending an example.

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Before reporting

• Check AM and PM, or choose a 24-hour clock.
• Check whether the end is on the next day.
• Remember that 7:30 is 7.5 decimal hours, not 7.30.

The calculation method explains the tools' limits.