Speed to Lead Calculator: How Much Is Slow Response Time Costing You?

Every minute your sales team takes to respond to a new lead, your chances of closing that deal drop by 10%. After just 5 minutes, contact rates plummet by 80%. Use our Lead Response Time Calculator to see the impact for your business. For more insights, check out our guide on Speed to Lead: The Complete Guide to Faster Response Times. For more insights, check out our guide on The Complete Speed to Lead Guide: Respond Faster, Close More Deals. For more insights, check out our guide on How to Contact Leads Immediately: 2026 Speed-to-Lead Guide. For more insights, check out our guide on Speed to Lead Statistics 2026: 47 Data Points That Drive Sales. For more insights, check out our guide on [Lead Scoring Calculator: Build Your Model in 5 Minutes [2026]](/blog/lead-scoring-calculator).

That's not speculation—it's data from MIT's landmark Lead Response Management Study. And for most companies, it means thousands of dollars vanishing into thin air every single week.

But here's what's frustrating: most sales leaders know speed matters. What they don't know is exactly how much their current response time is costing them—or how to build a compelling case for improvement. For more insights, check out our guide on Speed to Lead Statistics 2024: 47 Data Points That Matter.

That's where a speed to lead calculator comes in. Use our Speed to Lead ROI Calculator to see the impact for your business. This guide gives you everything you need: an interactive calculator, the formulas behind it, industry benchmarks, and a framework to present your findings to leadership.

What You Need Before Using the Calculator

Before you can calculate your speed to lead ROI, you'll need to gather a few key metrics from your CRM or sales tracking system:

• Average current response time (in minutes)
• Monthly inbound lead volume
• Current lead-to-opportunity conversion rate (%)
• Average deal size ($)
• Close rate on qualified opportunities (%)

• Response time by lead source (form fills vs. chat vs. phone)
• Response time by time of day/day of week
• Historical conversion rates at different response times

If you don't have exact numbers, use estimates. Even rough calculations reveal the magnitude of the opportunity.

Free Speed to Lead Calculator

Use this calculator to estimate how much revenue you're losing to slow lead response—and what you'd gain by improving.

The Speed to Lead Formula