Conversion Rate Calculator
Conversion rate is conversions divided by visitors, times 100. Get 105 enquiries from 4,200 visitors and your rate is 2.5%. To reach 150 enquiries on the same traffic you would need 3.57%. Rate and traffic are the only two levers, and rate is usually the cheaper one to move.
Enter one period of numbers
Sessions or users — either is fine, as long as you are consistent.
Form fills, calls, bookings — whatever counts as a conversion for you.
How many you actually need in the period. Optional.
1 conversion for every 40 visitors.
On today's traffic, with no extra visitors.
Relative lift on your current conversion rate.
Hitting the same target by buying traffic instead of fixing the page.
How to use this calculator
Put visitors in the first box and conversions in the second, both from the same period and the same source. If you are measuring one landing page, use that page's traffic, not the whole site. The third box is optional: enter the number of conversions you actually need and the calculator shows both routes to it — a better rate, or more traffic.
That last pair is the useful part. Most businesses reach for more traffic by reflex, because it can be bought. Getting from 2.5% to 3.57% on the same 4,200 visitors costs nothing in media and does the same job as buying 1,800 more people.
A worked example
A contractor's service page gets 4,200 visitors a month and produces 105 enquiries. Conversion rate is 105 ÷ 4,200 × 100 = 2.5%, or one enquiry for every 40 visitors.
Sales wants 150 enquiries. On the same traffic that means a 3.57% conversion rate — a 43% relative improvement, which is realistic if the page currently buries the phone number and asks for eight form fields. The alternative is 1,800 more visitors a month. At a $6 click, that is roughly $10,800 a month to avoid rewriting a page.
What a good and a bad result look like
Good is contextual, and traffic source decides most of it. High-intent search traffic landing on a page about the exact service someone typed should convert several times better than a cold social audience, and lumping them together produces a site-wide average that describes nobody. Split the rate by source before judging it.
The clearest bad result is a high-intent page converting under a percent, which almost always means the offer is vague, the form is long, or the page is slow on a phone. The subtler bad result is a very high rate on tiny traffic — three conversions from twenty visitors is 15% and means nothing at all. Wait for enough conversions before you believe any rate.
The mistake almost everyone makes
- Mismatched numerator and denominator. Counting phone calls from the whole business against traffic on one page is the most common way this metric ends up meaningless.
- Chasing the rate instead of the outcome. Removing qualifying questions lifts conversion rate and hands sales a pile of people who were never buying.
- Reading tiny samples. Under about thirty conversions, the rate moves on randomness. Most A/B tests are called long before this point.
- Blending traffic sources. One site-wide rate hides a brilliant search page and a hopeless social campaign averaging into something unremarkable.
- Ignoring what happens after. A page converting at 4% with a two-day callback delay produces fewer customers than one at 2.5% answered in five minutes.
Where to look next
Conversion rate tells you what share of traffic responds; it says nothing about what that response cost. The cost per lead calculator puts a price on each one, and the cost per booked job calculator follows them through appointments and signed work so you can see which stage is really capping revenue.
Common questions
How do you calculate conversion rate?
Divide the number of conversions by the number of visitors and multiply by 100. Sixty enquiries from 3,000 visitors is 60 ÷ 3,000 × 100 = 2%. The only rule that matters is that both numbers describe the same audience over the same period — counting site-wide traffic against conversions from one landing page produces a figure that is technically arithmetic and practically fiction.
What is a good conversion rate?
It depends far more on traffic source and intent than on industry. Someone searching for a service in their town converts at a multiple of someone who saw an interruptive video ad, and both get averaged into any published benchmark. Local service landing pages with strong intent commonly run in the mid single digits to low double digits, broad cold traffic often sits under 1%, and both can be correct. The number worth beating is your own from last quarter.
Should conversion rate use sessions or users?
Either works as long as you never mix them. Sessions counts every visit, so one person returning three times before enquiring produces three sessions and one conversion, which lowers the rate. Users counts people, which usually reads higher and maps better to how a business thinks about customers. Pick one, note it on the report, and do not change it mid-year.
Why is my conversion rate dropping while leads go up?
Almost always because traffic grew faster than conversions, and the new traffic is colder. Broad campaigns, a viral post or a top-of-funnel blog post bring in people who were never going to buy today, which drags the average down while the absolute number of enquiries rises. A falling rate alongside rising leads is usually fine. A falling rate alongside flat leads is the one to investigate.
What is the difference between conversion rate and close rate?
Conversion rate measures visitors becoming leads. Close rate measures leads becoming customers. They are separate stages and improving one does nothing for the other — a page that doubles enquiries by removing every qualifying question will usually halve the close rate right behind it. Watch them together, because the metric that matters is the product of the two.
How much traffic do you need before a conversion rate means anything?
Enough conversions, not enough visitors — the conversion count is what carries the signal. Under roughly thirty conversions in the period, the rate swings wildly on normal randomness and should not be used to judge anything. With ten conversions, two more or two fewer moves the rate by 20% and means nothing. Extend the window until the denominator produces a stable count before drawing conclusions or calling an A/B test.
How do you improve conversion rate?
In order of usual impact: make the offer clearer and more specific, cut the number of fields and steps between interest and contact, put proof near the point of decision, and make the page load fast on a phone. Design refreshes and colour changes get reached for first and deliver the least. The single biggest lever on most service sites is what happens after the form is submitted, which no rate on a dashboard will ever show.
Can conversion rate be over 100%?
Only as a symptom of a measurement problem. It happens when conversions are counted from one source and visitors from another, when a single visitor triggers the conversion event more than once, or when offline enquiries such as phone calls are added to a web-only traffic count. If the number goes above 100, treat it as a tracking bug rather than a result.
Keep going
What each of those conversions actually cost you once spend is divided across them.
Free tool Cost Per Booked Job CalculatorCarry the same funnel further — leads, appointments, show rate and signed work.
Free tool ROAS CalculatorRevenue divided by ad spend, plus what the ratio needs to be at your margin.
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