How Much Is a Small Conversion Rate Increase Worth?

Even a 0.1% uplift could add about £200 per month from the traffic you already have.

If you run an ecommerce site, you might wonder if conversion rate optimisation is worth the effort. This page gives you a practical worked example using simple maths, so you can see what small improvements could mean for your ecommerce revenue.

This is not about buying more traffic. It is about getting more value from the visitors you already have.

Baseline Example

Monthly visitors
10,000
Conversion rate
2.0%
Orders per month
200
Average order value
£20
Monthly revenue
£4,000
This is your starting point

What a Small Uplift Delivers

0.1% uplift (modest but meaningful)
New conversion rate: 2.1%
Orders per month: 210
Monthly revenue: £4,200
Extra per month
+£200
Extra per year
+£2,400
0.5% uplift (a strong result)
New conversion rate: 2.5%
Orders per month: 250
Monthly revenue: £5,000
Extra per month
+£1,000
Extra per year
+£12,000
1.0% uplift (possible, less typical)
New conversion rate: 3.0%
Orders per month: 300
Monthly revenue: £6,000
Extra per month
+£2,000
Extra per year
+£24,000
0.1% uplift = about £200/month extra revenue = test cost recovered quickly

Try Your Own Numbers

Use your own traffic, conversion rate, and order value to estimate what a small uplift could mean for your business. Adjust the numbers below and see the impact instantly.

Uplift:
Current monthly orders: 200
Current monthly revenue: £4,000
New conversion rate: 2.1%
Projected monthly orders: 210
Projected monthly revenue: £4,200
Extra revenue per month: +£200
Extra revenue per year: +£2,400

What to Expect in Reality

Most tests do not produce dramatic wins. Some deliver small gains, and some mainly provide useful learning. Over time, steady improvements and insights can build into meaningful growth in orders and revenue. The examples above show how even modest uplifts can add up.

What Does a Test Cost?

A straightforward managed test typically costs around £192.50 to £250. In this example, even a 0.1% uplift could add about £200 per month. That means a modest improvement could recover the cost quickly and continue adding extra revenue after that.

Learning and Iteration Matter

Conversion rate optimisation is not about chasing huge wins every time. It is about steady, practical improvement and learning what works for your customers. Over a year, a few small uplifts and useful insights can compound into a meaningful increase in monthly revenue.