Professional Services Productivity Metrics Operational

Average Project Duration

Average Project Duration: Average length, in days, of projects completed in the period.

Formula

Avg Duration = Sum of project durations / Number of projects

Computable definition

The canonical formula in the GASP formula grammar. The MCP server compiles it to SQL over the datasets listed below.

avg(field.project_completion_date - field.project_start_date where in_period(field.project_completion_date))

Unit: days

Data requirements

Grain: Per event · Frequency: Per milestone · Aggregation: event · Staged: no · Main source: PSA.

Field	Dataset	Type
`project_completion_date`	project	date
`project_start_date`	project	date
`snapshot_date`	project	date

Example SQL (Postgres)

SELECT (SELECT AVG((project_completion_date - project_start_date)) FROM project WHERE snapshot_date = :period_end AND (project_completion_date >= :period_start AND project_completion_date <= :period_end)) AS average_project_duration

From an agent: with the GASP MCP server, call lookup_metric({ "name": "Average Project Duration" }) or generate_query({ "metric": "Average Project Duration", "adapter": "<your adapter JSON>" }).

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