Meeting overlap helper
Find the overlapping time window between two people's availability — a quick way to spot when a meeting is actually possible.
Result
Overlapping window
Overlap length
How to use this calculator
- Enter both people's available time windows.
- Read the overlapping window (if any) and its length.
Assumptions
- Assumes both availability windows are on the same day and don't span overnight.
Technical details: what the fields mean
- Person 1 available from
person1Start - When the first person becomes available.
- Person 1 available until
person1End - When the first person is no longer available.
- Person 2 available from
person2Start - When the second person becomes available.
- Person 2 available until
person2End - When the second person is no longer available.
Methodology
Overlap start = the later of the two start times. Overlap end = the earlier of the two end times. If the overlap end is after the overlap start, that's the shared window; otherwise there's no overlap.
Worked example
Person 1: 09:00–15:00, Person 2: 13:00–17:00
Inputs: person1Start=09:00, person1End=15:00, person2Start=13:00, person2End=17:00
Result: 13:00–15:00 (120 minutes)
Practical guidance
- For more than two people, apply this pairwise — find the overlap of the first two, then overlap that result with the third person's availability, and so on.
Common mistakes
- Assuming any shared hour on both calendars means the exact same window is free — always double check both start and end times overlap, not just the general day.
FAQs
How do I find a meeting time that works for two people?
Enter both people's availability windows above — the overlapping time (if any) is the window that works for both.