WhenMathTimeline Compression Calculator
Enter a baseline duration and a target duration. See the reduction in days, as a percentage, and as a speed multiplier.
Worked example
A 10-day baseline compressed to an 8-day target represents a 2-day, 20 percent reduction, meaning the plan has to run 1.25 times faster than the original baseline to finish the same total work in that shorter window. Push that same baseline down to a 5-day target instead, and the reduction grows to 5 days, 50 percent, a 2 times multiplier, a substantially more aggressive compression than the first scenario.
Common mistakes
- Entering the target as larger than the baseline by mistake. That represents an expansion, not a compression, and it is flagged directly rather than reported as a negative percentage.
- Treating a large multiplier as automatically achievable. This only measures how large the compression is, not whether the underlying work can realistically move that much faster.
Limitations
This is a ratio between two numbers supplied directly. It says nothing about whether that compression is actually achievable given real constraints, only how large the gap between the two durations is.
Frequently asked questions
- What does the multiplier mean?
- A 1.25x multiplier means the compressed timeline has to move 25 percent faster than the original in order to finish the same total amount of work.
- What happens if the target duration is entered as larger than the baseline?
- That represents an expansion rather than a compression, so it is flagged directly instead of being reported as a negative percentage that could be easy to misread.