ConversionMath

ROAS Calculator

Calculate your return on ad spend to see how much revenue each dollar of advertising generates — or reverse it to solve for revenue or spend targets.

Your ROAS

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Formula ROAS = Revenue ÷ Ad Spend

How to use this calculator

Enter the revenue generated from your ad campaign and the total amount you spent on those ads. The calculator returns your ROAS as a multiplier (e.g., 4.00x means you earned $4 for every $1 spent). Use the "Calculate" selector to solve for revenue targets (given a spend and ROAS goal) or budget (given expected revenue and a ROAS target).

What is ROAS?

Return on ad spend (ROAS) is the ratio of revenue generated to money spent on advertising. It's one of the most important metrics in performance marketing because it directly measures how efficiently your ads convert spending into sales. A ROAS of 4.00x means $4 in revenue for every $1 in ad spend. Unlike ROI, ROAS measures revenue, not profit — so a "good" ROAS depends on your margins. A business with 20% margins needs a much higher ROAS than one with 80% margins to be profitable.

When to use this calculator

  • Measuring the top-line efficiency of paid campaigns across Google, Meta, TikTok, and other channels
  • Setting minimum ROAS targets based on your margins and breakeven point
  • Comparing campaign performance against benchmarks and historical data
  • Forecasting revenue from a given ad budget
  • Evaluating whether to scale, maintain, or pause a campaign
  • Reporting performance to clients, stakeholders, or leadership

Frequently asked questions

What is a good ROAS?
It depends on your margins. A common rule of thumb is 4:1 (4.00x) as a healthy benchmark for most ecommerce businesses, but that's just a starting point. If your gross margin is 20%, a 4.00x ROAS means you're roughly breaking even on the ad spend. High-margin businesses (software, services) can be profitable at 2.00x or lower; thin-margin businesses (retail, hardware) may need 6.00x or more. Always calculate your breakeven ROAS before setting targets.

How is ROAS calculated?
ROAS = Revenue from Ads ÷ Ad Spend. If you spent $1,000 on ads and generated $4,000 in revenue, your ROAS is 4.00x (or 400%).

What's the difference between ROAS and ROI?
ROAS measures revenue relative to ad spend. ROI (return on investment) measures profit relative to total investment — it accounts for costs beyond ad spend, like product cost, shipping, and overhead. ROAS is easier to measure from ad platforms directly; ROI gives a truer picture of profitability. Both are useful, but don't confuse them.

What's a breakeven ROAS?
Your breakeven ROAS is the minimum ROAS that covers your costs. A simplified formula: Breakeven ROAS = 1 ÷ Gross Margin. If your gross margin is 25%, your breakeven ROAS is 4.00x — anything below that loses money. Your target ROAS should be meaningfully above breakeven to be profitable.

Should ROAS be expressed as a ratio or a percentage?
Both are valid. "4.00x" (or "4:1") and "400%" mean the same thing. Ratio/multiplier format is more common in performance marketing discussions; percentage format is more common in executive reporting. This calculator shows the multiplier primarily with the percentage equivalent.

How do I improve my ROAS?
Improve conversion rate (bigger lever than most people realize), raise average order value, tighten targeting to higher-intent audiences, shift budget toward top-performing campaigns, improve creative, and reduce wasted spend on underperforming keywords or placements. Also check attribution — you may be underestimating ROAS if multi-touch revenue isn't being credited to ads.

Does ROAS account for customer lifetime value?
Standard ROAS typically measures first-purchase revenue only, which can undersell the true value of ad spend that brings in repeat customers. Some marketers calculate "lifetime ROAS" using LTV instead of first-purchase revenue — especially for subscription or high-repeat businesses. Both views are useful: short-term ROAS for tactical decisions, lifetime ROAS for strategic budgeting.

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