Every extra minute you take to respond to a web lead has a measurable price. Enter your numbers below to see what slow follow-up is actually costing your business — with the math shown, and the research cited.
Your Numbers
100
10500
What one closed deal is worth to you, on average.
3%
0.5%15%
How long it typically takes your team to make first contact with a new web lead.
You are losing an estimated
$0/year
to slow lead response, compared to responding in under 5 minutes.
We'll walk through your actual numbers — no pitch, just the math.
The full breakdown
Estimated monthly deals and revenue at your entered volume, close rate, and deal value — for every response-time bracket. Your current bracket is highlighted.
Response time
Qualification vs. <5 min
Est. deals / month
Est. revenue / month
How this is calculated (shown in full)
This tool uses one directly published statistic to anchor the model, then applies a clearly labeled, conservative decay assumption to the brackets that research hasn't measured in isolation. Nothing here is presented as a separately published number unless it's tagged cited.
cited Leads contacted within 5 minutes are up to 21× more likely to become qualified than leads contacted after 30 minutes (Lead Response Management Study, Oldroyd, 2007; popularized by InsideSales.com). We use this as the anchor: the "5–30 min" bracket carries a qualification multiplier of 1÷21 ≈ 4.8% of the sub-5-minute rate.
modeled For the slower brackets (30 min–2h, 2–24h, 24h+), no single published multiplier exists, so this calculator conservatively halves the qualification multiplier at each successive bracket — 4.8% → 2.4% → 1.2% → 0.6%. This is a modeling assumption, not a cited data point, and it is intentionally cautious rather than dramatic.
cited This degradation direction is supported by Harvard Business Review's finding that the average firm takes 42 hours to respond to a web lead, and 23% never respond at all (HBR, "The Short Life of Online Sales Leads," Oldroyd/McElheran/Elkington, 2011) — consistent with qualification rates approaching a low floor well before the 24-hour mark.
cited Separately, research widely attributed to Google/CEB found the first vendor to respond wins the deal 35–50% of the time. This isn't folded into the dollar total below (it measures a different thing — competitive win rate, not qualification rate) but it's a reminder that "slow but eventually qualified" leads are still frequently lost to a faster competitor.
The formula:
Monthly revenue at speed X = Leads × multiplier(X) × close rate × deal value
Annual $ lost = (Monthly revenue at <5min − Monthly revenue at your speed) × 12
Your close rate is treated as the rate at which contacted, qualified leads convert to closed deals — a figure that reflects sales skill more than response speed. What response speed changes is how many leads ever reach "qualified" in the first place. That's what the multiplier models.
Sources
cited Oldroyd, J. (2007). Lead Response Management Study — widely reported by InsideSales.com/Velocify: contacting a web lead within 5 minutes vs. after 30 minutes is associated with a 21× difference in qualification odds.
cited Oldroyd, J., McElheran, K., & Elkington, D. (2011). The Short Life of Online Sales Leads. Harvard Business Review. Average first-response time of 42 hours; 23% of firms never respond.
cited Google / CEB (Corporate Executive Board) research on B2B buyer response behavior: the first vendor to respond wins 35–50% of deals.
This calculator produces an estimate to illustrate the directional cost of slow response, built from the published research cited above plus a clearly labeled conservative model. It is not a guarantee of results for any specific business. Actual outcomes depend on lead source quality, market, sales process, and many other factors.