User at 12:37, 12 December 2022

2022-12-12T12:37:46Z

User: Created page with "The '''schedule performance index (SPI)''' is a measure of how close the project is to being completed compared to the schedule. As a ratio it is calculated by dividing the b..."

2021-04-22T19:20:06Z

Created page with "The '''schedule performance index (SPI)''' is a measure of how close the project is to being completed compared to the schedule. As a ratio it is calculated by dividing the b..."

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The '''schedule performance index (SPI)''' is a measure of how close the project is to being completed compared to the schedule.

As a ratio it is calculated by dividing the budgeted cost of work performed, or earned value, by the planned value.

For example:

A project has a budgeted cost of £120,000.
According to the schedule, 15% of the project should have been completed after one month (planned value). That is £120,000 x 15 / 100 = £18,000.
But after a month, only 12% of the project has actually been completed (earned value). That is £120,000 x 12 / 100 = £14,400.
SPI = EV / PV = 14,400 / 18,000 = 0.8

This means that for every estimated hour of work, the project team is only completing 0.8 hours (just over 45 minutes).

If the ratio has a value higher than 1 this indicates the project is progressing well against the schedule. If the SPI is 1, then the project is progressing exactly as planned. If the SPI is less than 1 then the project is running behind schedule.<ref>Definition - What Does Schedule Performance Index (SPI) Mean? [https://www.designingbuildings.co.uk/wiki/Schedule_performance_index_(SPI) DB Wiki]</ref>

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	This means that for every estimated hour of work, the project team is only completing 0.8 hours (just over 45 minutes).		This means that for every estimated hour of work, the project team is only completing 0.8 hours (just over 45 minutes).

−	If the ratio has a value higher than 1 this indicates the project is progressing well against the schedule. If the SPI is 1, then the project is progressing exactly as planned. If the SPI is less than 1 then the project is running behind schedule.<ref>~~Definition - What Does Schedule Performance Index (SPI) Mean?~~ [https://www.designingbuildings.co.uk/wiki/Schedule_performance_index_(SPI) DB Wiki]</ref>	+	If the ratio has a value higher than 1 this indicates the project is progressing well against the schedule. If the SPI is 1, then the project is progressing exactly as planned. If the SPI is less than 1 then the project is running behind schedule.<ref>[https://www.designingbuildings.co.uk/wiki/Schedule_performance_index_(SPI) Definition - What Does Schedule Performance Index (SPI) Mean? -DB Wiki]</ref>
		+
		+
		+	==See Also==
		+	*[[Project Management]]
		+
		+
		+
		+	==References==
		+	<references />

Schedule Performance Index (SPI) - Revision history

User at 12:37, 12 December 2022

User: Created page with "The '''schedule performance index (SPI)''' is a measure of how close the project is to being completed compared to the schedule. As a ratio it is calculated by dividing the b..."