Date Range Splitter

Worked example

January 1 through February 1, 2027 spans 31 elapsed days. Split into 2 segments, that gives 16 and 15 days, since 31 does not divide evenly by 2 and the earlier segment absorbs the extra day. Split the same range into 3 segments instead, and the lengths become 11, 10, and 10 days, again with any remainder loaded onto the earliest segments rather than the split being uneven in an unpredictable direction.

Common mistakes

• Expecting every segment to come out the same length. Only a range whose day count divides evenly by the segment count produces equal segments. Any remainder has to land somewhere, and this calculator loads it onto the earliest segments.
• Assuming the split follows calendar boundaries. A 3-way split of a quarter does not necessarily land on month boundaries, since the calculator divides elapsed days evenly rather than aligning to the calendar.

Limitations

This distributes elapsed days equally. It does not align segments to calendar month or week boundaries, so a project phase that needs to start on the first of a month should be checked against the actual segment dates rather than assumed.