Longer calls sign more often. Compared with the average call, the likelihood of becoming a signed client is about average (0.9–1.3×) for calls under one minute, about average (0.9–1.3×) for calls of one to five minutes, and above average (1.3–1.7×) for calls of five minutes or more. Call length is a clue about a caller, not a rule, so score the call and do not write off a short one.
Probative benchmarks, 2025–2026
Phone calls and signed-client likelihood
| What is measured | Published figure |
|---|---|
| Calls under one minute | about average (0.9–1.3×) |
| Calls of one to five minutes | about average (0.9–1.3×) |
| Calls of five minutes or more | above average (1.3–1.7×) |
What does this mean for your firm?
- Record how long each call lasts. Without call length you cannot tell which sources bring callers who stay on the line.
- Do not judge a source by its shortest calls. A short call can still become a signed client.
- Staff the phones so a caller who needs time gets it. A five-minute conversation is more likely to end in a signature than a one-minute one.
What does call length tell you?
A longer call may mean the caller reached a person who could help, and a short one may mean voicemail, a menu or a poor fit. That is a reading, not a finding. Use length together with whether the inquiry was qualified, and take the tier as a direction, not a prediction for any one call.
How do I read this table?
Each row compares how likely a call of that length is to become a signed client with the average call, so a tier of about average means close to the average call. The downloadable file also holds calls outside business hours compared with calls inside them, and the share of signed clients whose first inquiry was a call of two to five minutes.
The figures are bands and tiers, so treat each as approximate, plus or minus one step. How the benchmarks are made and protected.
Download this table and cite it
Each table is its own file. Free, with no email or login, under CC BY 4.0: copy and adapt it with credit to Probative Growth.
Cite this dataset: Probative Growth (2026). Probative benchmarks, 2025–2026 (v4.0.1) [Data set]. CC BY 4.0. https://doi.org/10.5281/zenodo.23735849. https://probativegrowth.com/research/benchmarks/calls-and-hours/
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How each figure is made and protected · Probative benchmarks, 2025–2026