Calculating and improving ROAS requires tools across three categories: platforms for running and reporting on ads, analytics for independent attribution tracking, and calculators for doing the profitability math that ad platforms won't do for you.
Here are seven free tools that cover those needs. Together they give you a more complete picture of campaign performance than any single platform dashboard provides.
1. Google Ads
Google Ads is the baseline for paid search advertising and shopping campaigns. The platform's Insights and Reports sections provide ROAS breakdowns by campaign, ad group, keyword, audience, and device. The conversion tracking system integrates directly with Google Analytics for cross-channel reporting.
Google Ads also offers Target ROAS bidding, which automates bid adjustments to hit a specified return target. Getting this right requires knowing your break-even ROAS (which Google's platform won't calculate for you), but the bidding infrastructure itself is solid.
Free tier: full account access at no cost; you pay only for clicks.
2. Meta Ads Manager
Meta Ads Manager manages Facebook and Instagram advertising. The breakdown tool in the reporting section segments ROAS by campaign, ad set, ad creative, placement, and audience, allowing the same kind of segmentation analysis that's useful on Google.
Meta's attribution window settings (accessible under attribution settings in the ad account) determine how aggressively sales are credited to Meta campaigns. Adjusting the window to 1-day click rather than the default 7-day click plus 1-day view often produces a lower but more accurate ROAS figure.
Free tier: full ad manager access at no cost; you pay for impressions and clicks.
3. Google Analytics
Google Analytics provides cross-channel attribution that's independent of what each ad platform claims. By tagging your ad URLs with UTM parameters, you can see which campaigns drove sessions and -- with e-commerce tracking configured -- which drove actual purchases.
The Acquisition reports show sessions and revenue by UTM source, giving you a view of campaign contribution that's derived from your own site data rather than each platform's attribution model. This is the closest thing to a neutral referee for multi-platform ROAS comparisons.
Free tier: Google Analytics 4 is free for standard use.
4. Looker Studio
Looker Studio (formerly Google Data Studio) is a free reporting tool that connects to Google Ads, Meta Ads, Google Analytics, and other data sources to build custom ROAS dashboards.
Instead of logging into three different platforms to check performance, you can build a single Looker Studio dashboard that pulls ROAS data from each source into one view. The Google Ads and Google Analytics connectors are free; some third-party connectors for Meta and TikTok data require paid services.
Free tier: unlimited reports and dashboards; core Google connectors are free.
5. TikTok Ads Manager
TikTok for Business provides its own ROAS reporting through TikTok Ads Manager. The platform supports purchase events tracked via the TikTok Pixel or server-side events, which feed into campaign-level ROAS reporting.
TikTok's ROAS tends to be lower than Google or Meta for direct-response campaigns because the platform is better suited for awareness and discovery than direct purchase intent. That context matters when comparing TikTok ROAS to other channels -- lower isn't necessarily worse if TikTok is functioning as a top-of-funnel channel.
Free tier: full ad manager access; you pay for impressions and clicks.
6. LinkedIn Campaign Manager
LinkedIn Campaign Manager tracks ROAS for B2B-oriented ad campaigns. LinkedIn's conversion tracking integrates with the LinkedIn Insight Tag, which fires on your site and attributes conversions to LinkedIn campaigns.
LinkedIn advertising is expensive relative to other platforms on a per-click basis, which means ROAS for direct response campaigns tends to be lower. The platform is better justified when customer lifetime value is high enough that a single converted customer justifies the higher acquisition cost -- professional services, B2B SaaS, and high-ticket consulting are common use cases.
Free tier: full campaign manager access; you pay for clicks and impressions.
7. EvvyTools ROAS Calculator
The free ROAS Calculator by EvvyTools handles the profitability math that ad platforms don't provide. Enter your ad spend, revenue, and gross margin, and it returns your current ROAS, your break-even ROAS, and whether you're above or below the profitability threshold.
Most ad platforms show you your ROAS but don't calculate whether that ROAS is actually profitable given your cost structure. The calculator fills that gap. It runs entirely in the browser, requires no account, and gives you the two numbers -- current ROAS and break-even ROAS -- in the same calculation.
For a full guide on how to use ROAS data to evaluate and improve campaign performance, including how to set Target ROAS targets based on actual margin rather than industry benchmarks, see: How to Calculate ROAS and Make Your Ad Spend Actually Profitable.
The most useful combination for most advertisers running multi-platform campaigns: Google Ads or Meta Ads Manager for platform-specific ROAS, Google Analytics for independent cross-channel attribution, EvvyTools ROAS Calculator for profitability math. The other tools (Looker Studio, LinkedIn, TikTok) add value depending on which channels you're using and whether consolidated reporting is worth the setup time.
How to Use These Tools Together for a Cross-Platform ROAS Audit
Running these tools in isolation gives you fragmented data. Running them together gives you a complete picture. Here's how they connect:
Start with the platform dashboards (Google Ads, Meta Ads Manager, TikTok Ads). Pull campaign-level ROAS for the period you're analyzing. Note the attribution window each platform is using -- Meta defaults to 7-day click plus 1-day view; Google Ads defaults vary by campaign type.
Use Google Analytics for independent attribution. In the Acquisition reports, filter by UTM source to see sessions and revenue from each channel. If you have e-commerce tracking properly configured, you can see actual purchase revenue attributed to each UTM source -- without the platform-side attribution inflation. Compare this to what each platform claims.
Calculate break-even ROAS with the EvvyTools ROAS Calculator. Enter your actual gross margin to get the minimum ROAS you need to be profitable. Use this as the floor when evaluating the platform-reported and analytics-derived ROAS numbers.
Consolidate in Looker Studio if you're running multiple channels. Once you have the individual data pulls, a Looker Studio dashboard lets you see all three channels side by side with consistent date ranges and metrics, making the comparison faster each month.
What These Tools Can't Do
No combination of these free tools solves multi-touch attribution completely. When a customer clicks a TikTok ad, then sees a Google search ad, and purchases after clicking a remarketing ad on Meta, each platform attributes the sale differently. Google Analytics (using last-non-direct-click or data-driven attribution) will report one number; the platform dashboards will each claim credit.
The goal with these tools isn't to achieve perfect attribution -- that requires more sophisticated multi-touch attribution platforms, most of which aren't free. The goal is to get your ROAS data accurate enough to make budget reallocation decisions with confidence, identify which channels are clearly above or below break-even, and avoid scaling campaigns that are losing money based on inflated platform reports.
Getting to that level of clarity takes two to three months of consistent tracking setup and monthly reconciliation. The payoff is a number you can actually trust when deciding whether to scale or cut a campaign.
Top comments (0)