Glossary · Measurement
Completion rate
Submissions divided by the people who could have submitted — and the denominator is the half nobody agrees on.
Also: Form conversion rate, finish rate
One of 25 entries in the Endpoint Forms glossary.
Definition
Completed submissions divided by some population that could have completed one. That second half is where the trouble is: the denominator might be page views, form impressions, form starts, or sessions — and every tool picks a different one without telling you which.
A form at 22% by page views is at 61% by starts. Neither number is wrong. They answer different questions and they are routinely compared as if they were the same number.
Why it matters
It is the number every form builder puts at the top of the dashboard, the number your split tests rank on, and — in most of the category — the number you are metered by. It is also, definitionally, a count of submit events. It has no access to who submitted or to what happened next.
That is not a flaw in anyone’s implementation. It is what the metric is. The problem starts when it becomes the only metric, which is the argument the rest of this site is about: the dishonest dashboard.
In practice
Report the funnel in two halves and stop compressing it into one ratio.
- View → start. Did anyone engage at all? This is a page and offer problem.
- Start → complete. Did the people who engaged get through? This is a form problem, and it is where drop-off analysis lives.
Fix the definition of “start” once — first field focus is the usual choice — write it down, and never change it, because changing it re-bases every historical comparison you own.
The common mistake
Comparing it across traffic sources.
A form carrying paid traffic will show a structurally lower completion rate than the same form carrying organic traffic, and no amount of design work closes the gap, because the gap is the audience.
“The highest drop-off was not at the start, it was mid-form on a single required field. … We did notice source differences as well. Paid traffic was much less tolerant of friction compared to organic or referral. Made us rethink which fields actually need to be mandatory vs just helpful.”
Segment by source before you conclude anything about the form. Otherwise the paid-heavy form loses every comparison it is entered into and the team redesigns something that was working.
Related terms
- Form abandonment
- Someone started your form and left — the only funnel metric most teams infer rather than observe.
- Form drop-off analysis
- Seeing exactly which question people stop at — the feature even competing vendors name as the one worth paying for.
- Multi-step form
- Splitting one form across several screens — the category’s most confident best practice, and one of its least evidenced.
- YieldOurs
- Our name for the quality-adjusted metric: Yield rate is the share of submissions that reached a good verdict; Yield value is revenue per hundred submissions.
- Per-response pricing
- Being billed by the submission — which makes spam a line item and turns a bot wave into a closed door for real buyers.