You already know your cost per lead. The harder question is what a lead is actually worth. Until you can put a profit figure on a single name in your pipeline, every decision about ad budgets, referral fees, and which channels to kill is a guess dressed up as strategy.
This calculator turns four numbers you already have into a defensible value per lead, then nets out what you pay to acquire one so you can see, channel by channel, whether you are buying profit or buying losses.
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Lead-to-customer close rate
Your close rate is the single biggest lever here, and it is the one most owners get wrong by averaging everything together. A lead from a paid search ad and a lead from a referral are not the same animal, and lumping them produces a blended close rate that flatters your worst channel and punishes your best. The math is simple multiplication: a 25 percent close rate means each new lead carries one-quarter of a sale's worth of expected value before it ever rings your phone. Double the close rate and you double the value of every lead in that bucket.
The practical move is to segment. Run a contractor's Google Ads leads separately from their Nextdoor referrals; run a clinic's web form leads separately from walk-ins. You will almost always find one source closing at two or three times another, and that gap is where your budget should follow.
Average customer revenue
This is the revenue a converted lead generates, and the right scope depends on your business. For a one-and-done transaction, use the average sale. For a business with repeat custom, decide deliberately whether you mean a single job or a customer's first-year spend, and stay consistent. The trap is mixing scopes mid-analysis, where you compare first-sale revenue in one channel against lifetime revenue in another and draw the wrong conclusion.
Gross margin
Revenue is vanity; margin is what funds payroll. The gross margin percentage strips out the direct cost of delivering the work so the calculator can report a profit value, not just a top-line number. A landscaping lead worth $4,000 in revenue at a 35 percent margin contributes roughly $1,400 in gross profit, and that $1,400 is the number that should anchor what you are willing to spend. If your margins differ sharply by service line, use the margin of the work this lead type tends to produce.
Cost per lead
Enter your fully loaded acquisition cost: ad spend, referral fees, trade-show booths, and the like, divided by leads produced. The calculator compares this against the gross profit value of a lead. The relationship, not any single number, is what matters. When cost per lead sits well below profit per lead, you have headroom to scale aggressively. When it creeps above, the channel is quietly losing money on every name even while your revenue dashboard looks healthy.
- Using a blended close rate that hides which channels actually work.
- Pricing leads off revenue instead of gross profit.
- Forgetting referral fees and sales labor in the cost-per-lead figure.
- Scaling a channel on volume before confirming it clears the profit threshold.
How to use this calculator
Enter your lead-to-customer close rate, the average revenue a closed customer generates, your gross margin percentage, and what you currently pay per lead. The result shows the revenue value per lead, the gross profit value, and the net value after subtracting acquisition cost. Run it once per channel to compare them honestly. Everything is calculated in your browser; nothing you enter is uploaded or stored.
Frequently asked questions
How do I find my close rate?
Divide customers won over a period by the leads that entered the pipeline in that same period, then multiply by 100. If your sales cycle runs long, track cohorts: follow the leads that arrived in a given month all the way through to won or lost rather than dividing this month's sales by this month's new leads, which understates the rate when volume is growing.
How much should I be willing to pay for a lead?
Use the gross profit value this calculator produces as your ceiling, then decide how much of that profit you are willing to give up to acquire the lead. Businesses with strong repeat purchase can pay closer to the full first-sale profit because later sales carry no acquisition cost. One-time-transaction businesses should leave a wider margin.
Why is lead value different from customer lifetime value?
Lead value measures a prospect at the moment it enters your pipeline, weighted by the odds it closes. Lifetime value measures the total profit a customer who already converted will generate across the whole relationship. Lead value tells you what to spend on marketing; lifetime value tells you what a won customer is worth keeping. The lifetime value calculator on this site handles the second question.
Important
This tool provides estimates and general-purpose documents, not financial, tax, legal, or professional advice. Verify important results before relying on them.
Support
Problem with this tool or suggestions for improvement? Please email support@niftyutilities.com.