About the ROAS Calculator
ROAS Calculator helps estimate the key numbers involved in advertising returns decisions. It is designed for quick scenario comparison: enter a realistic set of values, calculate the result, then change one assumption at a time to see what has the greatest effect. Unlike a static table, the result responds to your inputs and keeps the calculation in your browser. Campaign metrics are meaningful only when spend, revenue, clicks, impressions, customers, and conversions use the same date range, attribution rules, channel scope, and currency.
How to use this calculator
Enter values that match your situation and select Calculate result. Review the main result and its supporting figures, then change one input at a time to compare scenarios. Results are rounded for readability while the calculation retains additional precision internally.
Information you will need
- Spend
- Revenue
How the calculation works
Return on ad spend comparing revenue to ad cost. Read the primary result together with the supporting values rather than focusing on one number alone. A useful estimate should make its assumptions visible. If the answer looks surprising, verify the unit, rate, time period, and whether the entered value is gross or net. Run a conservative and an optimistic scenario to understand the range of possible outcomes.
Formula or method
ROAS = Revenue / Spend.
Worked example
$20K revenue on $5K spend = 4x.
The example is illustrative rather than a recommendation. Use your own verified values and keep all monetary or measurement units consistent. When comparing alternatives, save or note each result so the assumptions do not become mixed.
How to interpret the result
The primary output answers the main question posed by the roas calculator, while the additional cards provide context. A result with many decimal places is not necessarily more certain. The displayed precision makes comparison easier, but uncertainty in the inputs can be larger than the rounding difference.
Compare channels only after aligning attribution windows and conversion definitions. Review the metric beside gross margin, customer quality, repeat purchases, refunds, and incremental lift rather than optimizing one ratio in isolation.
Limitations and important notes
The roas calculator calculates a reporting metric, not a forecast or guarantee. Attribution platforms can assign the same conversion differently because of lookback windows, view-through credit, cross-device behavior, modeled conversions, refunds, and data delays. Revenue efficiency does not automatically equal profit. Reconcile source data, use contribution margin where relevant, and compare like-for-like campaign periods before changing budgets.
Frequently asked questions
How do I calculate ROAS?
ROAS (Return on Ad Spend) is revenue divided by ad spend. If a campaign costs $5,000 and generates $20,000 in revenue, your ROAS is 4.0x (or 4:1). Only count revenue attributed to the campaign, use a consistent attribution model and matching date ranges, and include all ad costs, not just media spend. ROAS measures revenue efficiency, not profit, so always pair it with your gross margin and break-even ROAS before judging whether a campaign is actually profitable.
What is a good ROAS for my business?
A 4:1 ROAS ($4 revenue per $1 ad spend) is widely cited as good, but the honest target depends on your gross margin. At a 50% margin you break even at 2x; at 25% you need 4x just to cover product costs. Recent ecommerce medians run closer to 2.5–3x on Meta and 4–4.5x on Google Search. Calculate your break-even ROAS (1 divided by gross margin) and aim for roughly 1.5–2x above it. Benchmarks vary by industry, so your margin math should come first.
Is a 4x ROAS always a good sign?
No. A 4x ROAS is only meaningful relative to your margin. At a 70% gross margin you break even at 1.43x, so 4x is strong but may mean budget is being capped. At a 20% margin your break-even is 5x, so 4x means you are losing money on every sale even though the dashboard looks healthy. Very high ROAS (8x+) on capped budgets often signals you are under-spending and leaving revenue on the table. Judge ROAS against contribution profit, not the number in isolation.
What is a good ROAS on Facebook vs Google?
Benchmarks differ by intent. Google Search typically delivers 4.0–4.5x median for ecommerce because searchers have high purchase intent, while Google Shopping runs 4–6x. Meta (Facebook/Instagram) averages 2.2–3x, with retargeting higher at 3.6x+. TikTok runs lower, around 1.5–3x, and works more as a top-of-funnel channel. These are directional ranges, not targets. Your profitable threshold is set by your own break-even ROAS, so compare each channel to that floor rather than to each other.
Why does my ROAS look high but I'm not making money?
Reported ROAS is revenue, not profit. It usually ignores product cost, shipping, payment fees, refunds, and overhead, and platform attribution can overstate credit — 7-day click windows count sales that might have happened anyway. A 4x ROAS on a 25%-margin product barely covers costs. Reconcile platform ROAS with your actual P&L: calculate net ROAS (revenue x gross margin divided by ad spend) and track MER (total revenue divided by total marketing spend) to see whether a channel is genuinely profitable.
How do I improve my ROAS?
Attack the biggest levers first: raise average order value with bundles, upsells, and free-shipping thresholds; lift landing page conversion rate; cut wasted spend with negative keywords and tighter targeting; and refresh ad creatives to fight fatigue. Improving a keyword from a Quality Score of 5 to 8 can cut CPC by 20–50%, directly lifting ROAS. Attribution choices also move the number, so compare campaigns on identical attribution windows. Small conversion-rate gains compound into significant ROAS improvement.
What is the difference between ROAS and MER?
ROAS divides revenue attributed to ads by ad spend, so it measures one channel and depends on how the platform assigns credit. MER (Marketing Efficiency Ratio) divides total company revenue by total marketing spend, capturing organic, email, and paid together. Because platform attribution often overstates paid performance, ROAS can look healthy while MER reveals a channel is barely profitable. Track both: use ROAS to optimize individual campaigns and MER to evaluate overall marketing health.