What is submittal-to-interview ratio?

How do you calculate it?

Divide interviews scheduled by submissions sent over the same period, using the submission date as the anchor so a slow client does not flatter a later cohort. Expressed either as a ratio (1 in 5) or a percentage (20%).

Segment it by route, not just overall. The same candidate submitted through a prime vendor and through a three-layer chain does not convert at the same rate, and averaging the two hides the thing worth acting on.

What does the ratio actually tell you?

It tells you whether the candidates you send are the ones the client wanted, and whether your submission package makes that obvious. A low ratio usually means one of three things: poor matching, a weak or inconsistent package, or a route too far from the decision maker.

It does not tell you whether the desk is productive. A recruiter can raise the ratio simply by submitting less, which is why it must be read alongside time-to-redeploy rather than instead of it.

How do you improve it?

Match on meaning rather than keywords, so a candidate whose relevance is structural still surfaces and an apparent keyword match with no substance does not. Name the gaps explicitly in the package instead of hoping the client misses them.

Then fix the route. A submission four layers from the end client converts worse than the same résumé one layer out, regardless of candidate quality.

What is a good ratio?

It varies enough by skill, region, and layer count that a published benchmark is close to meaningless. The useful comparison is against your own ratio last quarter, segmented by route.