Google Ads reports can look overwhelming at first. There are dozens of columns, charts, and filters, and it is easy to stare at the numbers without knowing what to do next. The good news is that most beginners only need five numbers to judge whether a campaign is working. Learn those five, check them in the same order each week, and the rest of the report becomes much easier to understand.
Start with the goal, not the report
Before you open any report, write down the one action you want from the ads. For a plumber, it may be phone calls. For an online shop, it may be completed orders. For a training provider, it may be form enquiries. That goal decides which numbers matter. A campaign with many clicks but no enquiries is not a success, even if the click numbers look impressive.
Also choose a fair time period. One day is usually too short to judge anything, unless the budget is very large. A week is a good starting point for small campaigns, and a month is better for spotting trends. Avoid comparing a Monday with a Sunday, or a holiday week with a normal week, without noting the difference.
Number 1: Cost
Cost is simply how much you spent in the period. It is the first number to check because it tells you whether the campaign ran as planned. If cost is much higher than your budget, check the daily budget and any shared budgets. If cost is very low, the campaign may not be reaching enough people, or the keywords, locations, or schedule may be too narrow.
Cost alone does not tell you if the campaign is good or bad. It only tells you what you paid. The next numbers turn that spend into meaning.
Number 2: Clicks and click-through rate
Clicks show how many people chose your ad after seeing it. Click-through rate, or CTR, is clicks divided by impressions, shown as a percentage. It is a useful sign of relevance: if many people see your ad but very few click, the ad or keyword may not match what they searched for.
Do not chase clicks for their own sake. A high CTR from the wrong audience can waste budget. A lower CTR from a tightly matched audience can be better, because those visitors are more likely to enquire or buy. Use CTR as a prompt to check keywords and ad text, not as a goal on its own.
Number 3: Conversions
Conversions are the valuable actions you set up in tracking, such as calls, form submissions, bookings, or purchases. This is the number that connects advertising to your business. If conversion tracking is not set up, fix that first, because without it you are guessing. Check the conversion action names carefully, so you know whether a “conversion” is a sale, a lead, or a smaller step such as a page view.
Also look at conversion rate, which is conversions divided by clicks. It shows how well the landing page turns visitors into enquiries. If clicks are healthy but conversion rate is very low, the problem is often the landing page, the offer, or the match between the ad and the page, rather than the ad itself.
Number 4: Cost per conversion
Cost per conversion is total cost divided by conversions. It answers a simple question: “How much did I pay, on average, for each enquiry or sale?” This is one of the most practical numbers for a small business, because it can be compared with the value of a customer. If an enquiry is worth about £80 to your business and your cost per conversion is £12, the campaign has room to grow. If the cost per conversion is £90 for the same enquiry, you need to improve targeting, ads, or the landing page before spending more.
Be careful with small numbers. If you had only one conversion, cost per conversion can swing wildly from week to week. Wait for more data before making a big decision, and look at the trend over several weeks rather than a single spike.
Number 5: Search impression share, used carefully
Search impression share shows the share of eligible impressions your ads received. In plain terms, it hints at how often you appeared when people searched for your keywords. A low share can mean your budget ran out, your bids were too low, or your ads were not eligible for other reasons.
Do not try to reach 100% share. That is rarely worth the cost for a small business. Instead, use this number to explain a change: if clicks fell and impression share also fell, budget or eligibility may be the cause. If clicks fell but impression share stayed steady, the drop may be in search demand or in the ads themselves.
A worked example: a local bakery
A bakery spends £210 in a week, gets 420 clicks, and receives 21 online cake orders. Its click-through rate is healthy, its conversion rate is 21 divided by 420, or 5%, and its cost per conversion is £210 divided by 21, or £10 per order. If the average order profit after ingredients and time is £18, the bakery is in a workable range. If cost per order rose to £25, the bakery would know to check which keywords and ads produced orders, and which produced clicks without orders, before increasing the budget.
Notice that the bakery did not need twenty columns to make that judgement. Cost, clicks, conversions, cost per conversion, and a quick check of impression share told the story.
Your weekly report checklist
- Write down your one goal before opening the report.
- Check cost first, and compare it with your planned budget.
- Check clicks and click-through rate for relevance.
- Check conversions and conversion rate for real results.
- Calculate cost per conversion and compare it with customer value.
- Glance at impression share only to explain a change.
- Note one action for the week, such as pausing a weak keyword or improving a landing page.
Practical summary
Reports become useful when you read them in order: cost, clicks and click-through rate, conversions, cost per conversion, and impression share as a supporting clue. Keep the same routine each week, compare like with like, and make one clear change at a time. Over a month, that simple habit will teach you more than checking every column every day.