A/B Test Facebook Ads: Full Steps To Do It Properly

Actually, A/B Testing Facebook Ads is a feature that every advertiser should not ignore. It has many effects, mainly helping you optimize ads and find good components of ads. Most importantly, it helps you find winning ads with high performance. So what is this tool? What is the most correct way? Learn all about A/B Testing in this article.

What Is A/B Test Facebook Ads?
A/B testing Facebook ads is putting two or more versions of ads with the purpose of establishing which is the most effective and resonates best with your target audience. For new advertisers, A/B Test is a feature available in Meta Ads Manager that helps advertisers compare two separate ads in simple words and the result you get is higher-performing ads. You can A/B test ad format, ad copy, headlines, images, target audience or placement.

Why is this tool important for advertisers? Because it can help you filter out poor performing ingredients and ads. The purpose of A/B testing your Facebook ads is not only to increase your conversions by using the best performing version, but also to gain valuable insight into your potential buyers’ behavior and use this insight across all your other marketing campaigns. From there, you can balance your budget and really focus your money on high-performing ad campaigns.
How Advertiser Can Benefit From A/B Testing Facebook Ads
To get good results from Facebook advertising, it is not necessary to spend more money rather to spend in a smart way. A/B testing is considered as the secret weapon that determines who among the advertisers is making profit and who is just breaking even.
- Maximize Return on Investment (ROI): The most important advantage of A/B testing is its direct effect can increase ROI by up to 10 times. As soon as you find out the ad elements that yield the best results, your investment of every dollar will concentrate on the spending of proven winners that deliver consistent returns.
- Reduce Wasted Ad Spend: A/B testing is acting as your financial safeguard that helps you to find out the harmful strategies and then eliminate them before they drain up your resources. By testing various approaches in a systematic manner, you will discover what does not work just as importantly as what does. This understanding will not allow you to repeat the mistakes which cost a lot and will give you the freedom to budget only those strategies that are result-giving.
- Discover Hidden Audience Insights: A/B testing reveals your audience that you’d never uncover otherwise. These insights extend beyond individual campaigns. Each test reveals something new about your customers, what drives them, and their preferred way of communication. Gradually, you create a detailed picture of your audience’s preferences, habits, and triggers.
- Combat Ad Fatigue Proactively: At some point all ads will lose their impact as viewers get used to them. However, A/B testing allows you to stay one step ahead of ad fatigue by introducing and proving new creative variations non-stop.
- Optimize for Different Campaign Objectives: Different campaigns don’t have the same objectives. Some are about awareness, some about consideration, and A/B testing lets you optimize for each aim. Analyzing which creative types, messages, and targeting tactics suit each goal will allow you to create customized guides for various campaign genres.
>>>Learn More: What Is CPA Facebook Ads? How To Calculate And Reduce It?
When Should You Start to A/B Test Your Facebook Ads?
The A/B tests for Facebook ads can be initiated at anytime, it can be when you are just beginning your promotion and want to gather as much asinsights possible, or when you are halfway through and want to get your results improved.
Precisely, the A/B testing is very useful when you have just started a new advertising campaign and is afraid that the new ad will bring negative results. In this case, A/B testing offers a secure setting for trial-and-error, which means that you can test your daring new ideas without consuming your whole budget. By comparing the new strategies with the already established ones, you can confirm which ideas are suitable for further development. In case the experiment is successful, you go ahead with it. If, however, the result is below your expectations, you have gained some useful know-how while still preserving most of your funds.
How To Use A/B Test Facebook Ads?
First, visit Meta Ads Manager. The next steps depend on your screen size. If you go full screen with wide resolution, you can see the ‘A/B Test’ feature as shown below:

If your working window with Meta Ads Manager is too small, you must click on ‘More’. Then click ‘A/B Test’ as shown below:

There is another way to use A/B Testing. That is on the second Ad Campaign initialization screen, turn this feature on as shown below:

Instructions For Mastering A/B Test Facebook Ads
The next content section is the most specific steps for you to master A/B Test Facebook Ads. I will clearly analyze 3 effective ways to do A/B Test. That is:
Find winning Ad
While running Facebook Ads, you will certainly wonder which advertising budget you should really focus on. Or want to know which ads have the best performance because you don’t have enough money to spend on too many ads. Or you simply want to remove poorly performing ads.
So here’s how you do it:
Step 1: You can start creating A/B Test as instructed above. These steps are extremely simple so I will skip them here.
Step 2: Next, you just need to click on ‘Select two existing ads’.

Step 3: In this step, you must choose to compare the level of Ad Sets or Ad Campaigns. Please select the level of ad you want to compare. Then select the Ad you want to compare.

Step 4: Choose the budget and time you want to run the A/B Test.
Step 5: Choose key metric to compare.

Find high-performing ad elements
High-performing ad elements here can be anything in an Ad Copy that you create. It can be the Headline, Primary Text, Description, CTA, Ad Creative (Image, Video), etc. But it must be effective and efficient.
For example, you have more than 1 idea about Image for ads. Below are specific instructions so you can know which Primary Text is more attractive to your audience:
Step 1: Same as step 1 above.
Step 2: Next, you just need to click on ‘Make a copy of an ad’. To create an Ad Copy identical to the original Ad Copy.

Step 3: In this step, you need to change the content of the second Ad Copy. More specifically, you must know clearly what the component you want to compare is. For example, I want to see which image will attract more viewers. Then I will ONLY CHANGE ‘Image’ as follows:

Step 4: Choose the budget and time you want to run.
Compare Automated Ads vs. Manual Setting Ads
I’ll basically go through the same steps as I did to find the winning ad (not the high-performing ad component). However, you need to have Automated Ads and Manual Setting Ads available before:

A small note in this situation: Currently, I mean in 2025, AI is being developed very strongly by Facebook. Therefore, comparing Automated Ads vs. Manual Set Up Ads is extremely important. You will be able to find a few Winning Automated Ads. Try to track and optimize them, it won’t disappoint you. Besides, toward to better advertising performance, you can also consider using a Facebook Agency Ad Account for rent. These accounts offer significant advantages over standard business accounts with higher spending limits as well as priority support to get resolved faster.
How Much Should You Spend On A/B Test Facebook Ads?
The budget for an A/B test campaign depends on how many versions you are testing. More versions mean more budget because you will need a sufficient number of impressions and conversions to get a statistically significant winner.
If you are a beginner, don’t have enough data, and just need a quick solution, then you can always call on Facebook and use the recommended budget it provides.
However, if you want to be the one who controls your budget, here is a simple formula that will help you find your ideal A/B testing budget: Average CPC x No. of Variations x Conversions Needed
>>>Explore for more: Facebook Ads Reporting
Frequently Asked Questions
Q: What is A/B Testing Tool?
A: A/B testing Facebook ads is putting two or more versions of ads with the purpose of establishing which is the most effective and resonates best with your target audience. For new advertisers, A/B Test is a feature available in Meta Ads Manager that helps advertisers compare two separate ads in simple word, and the result you get is higher performing ads.
Q: Which Elements of Your Facebook Ads Should You A/B Test?
A: You can test any element you want, from A/B test ad format, ad copy, headlines, images, the color of a CTA, to audience age, gender or placement.
Q: When Should You Start to A/B Test Your Facebook Ads?
A: The A/B tests for Facebook ads can be initiated at anytime, it can be when you are just beginning your promotion and want to gather as much asinsights possible, or when you are halfway through and want to get your results improved.
Q: What’s the Ideal Budget for Facebook A/B Testing?
A: The budget for your A/B testing campaign is depends on how many versions you are testing. The more versions there are, the more budget you should allocate because you will need a sufficient number of impressions and conversions to determine the winning ad.
Summary
In short, A/B Testing Facebook Ads is a pretty great feature. It has many ways to perform and use for many different purposes. However, if you want to master Facebook Ads. Well, it’s been a long and difficult journey.
Don’t be impatient or worried; contact GDT Agency whenever you need. Our team of experts is ready to help you overcome all challenges when running Facebook Ads. Keep it up, Facebook Advertisers!
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