Free ROAS Calculator (Return on Ad Spend): Calculate ROAS Instantly

You’re running paid campaigns, and the clock’s always ticking. Your clients want proof their dollars are working. You want to cut through the fluff and see the real return—fast.

Whether you’re managing Google Ads, Facebook campaigns, or multi-channel strategies, return on ad spend (ROAS)—much like social media ROI—tells you whether your ad dollars are actually driving value.

That’s where this free ROAS calculator comes in. No spreadsheets. No guesswork. Just enter your numbers and see exactly how your campaigns are performing—right now.

And because we know agency life doesn’t stop at one metric, we’ll also break down:

• How ROAS works (and why it matters)

• The exact ROAS formula

• What counts as a “good” ROAS by platform

• How to level up your ad reporting process

Calculate Your ROAS

Use the calculator below to instantly measure your return on ad spend (ROAS) and see how well your client’s advertising budget is performing. Just enter your total revenue from ads and total ad spend.

Not sure what the number means? Keep scrolling. We’ll show you how to interpret it and improve your results.

What Is ROAS (Return On Ad Spend)?

ROAS helps you evaluate the financial performance of any online advertising campaign, from retargeting ads to awareness pushes.

The concept is straightforward: How many dollars does your client get back in return for every dollar of advertising spend?

What Is the ROAS Formula?

ROAS is calculated by dividing the return on advertising by the ad spend. The result is your ROAS ratio. It pairs well with other key metrics like cost per reach for a fuller picture of campaign efficiency.

Example ROAS Calculation

Let’s say your client’s ad campaign generates $25,000 in revenue, and the advertising cost was $5,000 to achieve it. Your client’s ROAS is 5, which means they’ve earned $5 for every dollar spent.

The same formula applies whether you’re running Google Ads, Facebook Ads, etc., for your client.

A higher ROAS metric usually means better efficiency, but the “right” ROAS depends on your business model, margins, and goals. For some, a ROAS of 3 is great. For others, anything under 10 isn’t worth the effort. Your actual benchmark depends on your margins—start with your gross profits formula.

ROAS helps you cut through vanity metrics and zero-in on what really matters: profitability.

Take Your Ad Reporting to the Next Level

Knowing how to calculate ROAS is just the start. The real value comes when you track it across every campaign, share it with clients in seconds, and use it to guide smart decisions.

If you’re still copying data into spreadsheets, manually updating client reports, or juggling five different platforms to get a clear picture, you’re wasting time that could be spent on strategy and growing your client’s business.

AgencyAnalytics brings all your ad data together on one dashboard:

• Create custom metrics to track ROAS across ad platforms like Google Ads, Facebook, TikTok, and more.

• Automatically update client reports every month.

• Highlight top-performing campaigns and explain what’s working (and why).

• Save hours every month on reporting alone.

No more scrambling for numbers. No more last-minute screenshots. Just clean, professional reports that show clients their results. (And because ROAS is only one part of the performance puzzle, here are the most important PPC metrics to track alongside it.)

Want to spend less time on reports and more time scaling your agency (and improving your agency rates)? Don’t wait. Start your free AgencyAnalytics trial today!