Free Tool

Free ROAS Calculator: Calculate Your Return on Ad Spend

Enter your ad spend and revenue to instantly calculate ROAS as a ratio, percentage, and net profit or loss. Includes breakeven ROAS calculation based on your profit margins.

Last updated: March 2026 · Reading time: 7 min

ROAS Calculator

Total Ad Spend ($)

Revenue from Ads ($)

Profit Margin (%) – optional, for breakeven calculation

How It Works

How does the ROAS calculator work?

This ROAS calculator divides your revenue from ads by your total ad spend to produce a ratio. A ROAS of 4x means you earn $4 for every $1 spent on ads. The calculator also shows the result as a percentage (400%) and calculates net profit or loss by subtracting spend from revenue. If you enter your profit margin, the calculator goes further: it computes your breakeven ROAS, which is the minimum ROAS you need to cover both ad costs and product/service costs. A business with 40% profit margins needs a ROAS of at least 2.5x just to break even.

Formula

What is the ROAS formula?

The ROAS formula is straightforward: divide revenue generated from ads by the cost of those ads.

ROAS (Return on Ad Spend): The revenue earned per dollar spent on advertising, calculated as Revenue from Ads / Ad Spend.

Calculation	Formula	Example
ROAS Ratio	Revenue / Ad Spend	$20,000 / $5,000 = 4.0x
ROAS Percentage	(Revenue / Ad Spend) x 100	($20,000 / $5,000) x 100 = 400%
Net Profit	Revenue – Ad Spend	$20,000 – $5,000 = $15,000
Breakeven ROAS	1 / Profit Margin	1 / 0.40 = 2.5x

The breakeven calculation is the one most advertisers miss. A 4x ROAS sounds great, but if your profit margin is 20%, your breakeven ROAS is 5x. That 4x ROAS is actually losing money after accounting for the cost of goods sold. Always calculate breakeven ROAS before setting campaign targets.

Benchmarks

What ROAS should you aim for?

The “right” ROAS depends on your profit margins, business model, and growth stage. There is no universal good ROAS. Here are benchmarks by vertical based on data from Google Ads Benchmarks (2024) and our own client data across 100+ accounts:

Industry	Typical ROAS Range	Breakeven ROAS (est.)
Ecommerce (general)	3x – 5x	2.0x – 3.3x
Ecommerce (luxury/high margin)	5x – 10x	1.5x – 2.0x
DTC Brands	2x – 4x	2.5x – 4.0x
SaaS (with LTV)	5x – 15x	1.5x – 3.0x
Lead Gen (B2B)	3x – 8x	Varies by close rate
Local Services	5x – 12x	2.0x – 3.0x

A DTC brand with 30% margins and a ROAS of 2.5x is barely breaking even. The same 2.5x ROAS for a SaaS company with 80% margins is highly profitable. Context is everything. Don’t compare your ROAS to an industry average without accounting for your own unit economics. For SaaS and subscription businesses, consider lifetime value (LTV), not just first-purchase revenue. If your average customer pays $100/month and stays for 18 months, a $200 acquisition cost (ROAS of 0.5x on first purchase) is still profitable when measured against $1,800 in LTV.

“ROAS without margins is a vanity metric. I’ve seen ecommerce founders celebrate a 3x ROAS while losing money on every order because their COGS ate 70% of revenue. Your breakeven ROAS is the number that matters. Calculate it, set your Google Ads Target ROAS 20% above it, and optimize from there.”
Hardik Shah, Founder of ScaleGrowth.Digital

Step-by-Step

How do you use this ROAS calculator?

Enter your ad spend. This is your total advertising cost for the period you want to measure (a month, a quarter, a campaign lifetime). Pull this from your Google Ads or Meta Ads dashboard.
Enter revenue from ads. This is the total revenue directly attributed to your ad campaigns. Use your platform’s conversion tracking data or your analytics tool (GA4, Shopify, etc.).
Enter your profit margin (optional). This is your gross profit margin after cost of goods sold. For services, this is typically 50-80%. For physical products, it’s usually 25-50%. If you skip this field, breakeven ROAS defaults to 1.0x (revenue = spend).
Click Calculate. Read the results: ROAS ratio, percentage, net profit/loss, and breakeven ROAS.
Compare to breakeven. If your ROAS exceeds breakeven ROAS, you’re profitable. If it’s below, you’re losing money on every ad dollar.

Common Mistakes

What are common ROAS calculation mistakes?

Three errors come up repeatedly when advertisers calculate ROAS:

Counting revenue, not profit. ROAS measures revenue, not profit. A 4x ROAS on a product with 20% margins means you’re losing $0.20 per dollar of ad spend. You need to pair ROAS with margin data for a complete picture. That’s why this calculator includes the breakeven ROAS field.
Using inconsistent attribution windows. Google Ads defaults to a 30-day click-through window. Meta Ads defaults to 7-day click, 1-day view. If you’re comparing ROAS across platforms, you’re comparing different attribution models. Standardize on one window or use a third-party attribution tool.
Ignoring assisted conversions. Last-click ROAS understates the value of upper-funnel campaigns. A YouTube ad that introduces your brand and a Search ad that closes the sale both contribute to the conversion. Google’s data-driven attribution model (default since 2023) helps, but it’s not perfect.

Use our CPC calculator alongside ROAS to model different cost scenarios, and our CPM calculator for display and video campaigns where impressions matter more than clicks.

CPC Calculator

Calculate cost per click from total spend and clicks, or model budget scenarios.

CPM Calculator

Calculate cost per 1,000 impressions with platform benchmarks.

Google Ads Audit Checklist

38-point audit to find wasted spend and improve ROAS.

FAQ

Frequently Asked Questions

What is a good ROAS for Google Ads?

A good ROAS depends on your profit margins. For ecommerce with 30-50% margins, aim for 3x-5x. For SaaS with 70-80% margins, even 2x can be profitable. The key metric is your breakeven ROAS (1 / profit margin). Any ROAS above that number generates profit.

What is the difference between ROAS and ROI?

ROAS measures revenue per dollar of ad spend (Revenue / Ad Spend). ROI measures profit per dollar of total investment ((Revenue – Total Costs) / Total Costs). ROAS only accounts for ad spend. ROI includes all costs: ad spend, product costs, salaries, tools, and overhead. ROAS of 4x does not mean 400% ROI.

How do you calculate breakeven ROAS?

Breakeven ROAS = 1 / Profit Margin. If your gross profit margin is 40% (0.40), your breakeven ROAS is 1 / 0.40 = 2.5x. This means you need to earn at least $2.50 in revenue for every $1 in ad spend to cover both ad costs and product costs.

Why is my ROAS different in Google Ads vs Google Analytics?

Google Ads and Google Analytics use different attribution models and conversion windows. Google Ads uses its own conversion tracking (typically last-click within Google Ads). GA4 uses data-driven attribution across all channels. GA4 may attribute some conversions to organic or direct that Google Ads claims. Discrepancies of 10-30% are normal.

Should I set Target ROAS in Google Ads?

Use Target ROAS bidding only when your campaign has at least 15 conversions in the last 30 days (Google’s recommendation). Set your initial target 10-15% below your actual ROAS to give the algorithm room to learn. Overly aggressive ROAS targets will suppress your impressions and volume.