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Speed-to-lead calculator: what each minute before a callback costs
Direct answer: Speed to lead is the time between a lead arriving and a human responding. Published studies put a lead contacted within five minutes at several times the connect and qualification rate of one contacted after thirty, and the odds keep falling by the hour. This calculator takes your monthly leads, current response time, close rate and customer value and shows what the delay is costing in customers and revenue each month, with no signup and nothing stored.
Most businesses spend their effort on getting more leads and almost none on what happens in the hour after one arrives. That hour decides more revenue than the ad budget does.
Speed-to-lead calculator
Your numbers, our decay model. The model is drawn from published response-time research and is deliberately conservative; it is an estimate, not a forecast.
How the model works
The calculator holds everything constant except response time. It applies a relative connect rate to your leads based on how long they wait, then multiplies by your close rate on reached leads and your customer value. The relative rates are: 100% within a minute, 80% at five minutes, 60% at fifteen, 45% at thirty, 30% at one hour, 18% at four hours, 12% same day, 8% next day and 5% after two days. Values between those points are interpolated.
Those figures are a conservative blend of the published work on lead response: the Lead Response Management study of 2007 (contact odds roughly 100 times higher at five minutes than at thirty), the Harvard Business Review audit of 2,241 companies in 2011 (firms responding within an hour were about seven times more likely to qualify the lead than those that waited longer, and most took more than a day), and the lead-response benchmarks published since by CRM and call-tracking vendors. Real decay is often steeper than the model, especially for home services and legal, where the prospect is calling three firms in a row and hiring the first that answers.
What the model does not do: it does not assume faster response changes the close rate on reached leads, and it does not count the leads you never see because a missed call never left a voicemail. Both would make the number larger.
Why response time decays so fast
The buyer is still in the moment
A lead who fills a form at 2:14 is thinking about the problem at 2:14. By 3:00 they are in a meeting; by the next morning the problem is either solved by someone else or back on the list.
Parallel enquiries
Service buyers contact two to four providers at once. The first to respond frames the conversation; the rest are compared against it.
Memory and trust
A callback within minutes reads as competence. A callback the next day has to start by reminding the person who you are.
Reachability
Within five minutes the lead is still holding the phone. An hour later the call goes to voicemail and the sequence of missed calls begins.
What a good speed-to-lead target looks like
For a service business taking web leads during business hours, the target we set is a human reply within five minutes, with an automatic text acknowledgement inside sixty seconds that names a specific next step ("Call you at 2:30, or is 4 better?"). After hours, the text goes out immediately and the call happens first thing, with the lead told exactly when. For stores and SaaS, the equivalent is the abandoned-cart or trial-welcome message inside the first hour and a human on live chat during the day.
Getting there is usually operational rather than technical: one person owns new leads, notifications go to a phone rather than an inbox, missed calls trigger an immediate text, and the calendar has room to call back. Where the volume justifies it, a call-answering service or a sales-trained assistant covers the gaps. The lead generation page covers the response system in detail, the sales funnel page shows where the handoff fits, and marketing automation handles the messages that should go out without a person.
How to measure your own response time this week
- Export the last 30 days of form submissions with timestamps, and the first outbound call, text or email to each lead from your phone system or CRM. The median gap is your speed to lead; also note the share never contacted at all.
- Pull missed calls from your phone system for the same period and how many were returned, and how fast.
- Enter the median into the calculator above alongside your close rate on reached leads. The difference between the "now" and "five minutes" columns is the budget for fixing it.
- Submit a form on your own site from a phone at 7 pm and time the reply. Most owners are surprised.
If you want the whole funnel measured, not only the response step, start with the free conversion audit; it checks the follow-up as well as the page.
Questions people ask
What is a good speed to lead?
Under five minutes for a human response during business hours, with an automatic acknowledgement inside a minute. Most businesses measure in hours or days.
Where do the decay rates in the calculator come from?
A conservative blend of the Lead Response Management study (2007), the Harvard Business Review response audit (2011) and vendor benchmarks published since. The model understates the effect for competitive local services.
Does the calculator store my numbers?
No. It runs in your browser and nothing is sent anywhere.
Does a faster text count, or does it have to be a call?
An immediate text that names a specific next step captures most of the benefit for web leads; a call within five minutes captures the rest. A text alone with no follow-through does not.
We get leads after hours. What then?
Send the acknowledgement text immediately with the time you will call, then call first thing. Stating the time is what keeps the lead from moving on.
Want the response system built, not just measured?
A free strategy session looks at your leads, your current response time and what is in the way. Then we tell you plainly what would move the number.
Related pages
More free tools and the pages that explain the numbers behind them:
- Conversion rate calculator — Free conversion rate calculator.
- Form friction calculator — Free form friction calculator.
- Conversion rate benchmarks — What a good landing page conversion rate is by industry and traffic source, what benchmark reports say, and seven fixes that move a page from 2% to 5%