Return on Ad Spend (ROAS) Calculator
Measure the gross revenue generated for every dollar invested in advertising spend.
Calculate Return on Ad Spend (ROAS)
Return on Ad Spend (ROAS) Formulas & Reverse Equations
Use these standard and algebraic reverse formulas in spreadsheets, agency decks, or media plans:
Solve for ROAS
ROAS = (Revenue ÷ Ad Spend) × 100Solve for Revenue
Revenue = (Ad Spend × ROAS) ÷ 100Solve for Ad Spend
Ad Spend = (Revenue × 100) ÷ ROASUnderstanding Return on Ad Spend (ROAS)
Return on Ad Spend (ROAS) is the north-star revenue metric for performance marketing and e-commerce media buying. Expressed either as a percentage (e.g. 450%) or a ratio multiplier (e.g. 4.5x), ROAS shows how much top-line revenue is directly attributable to a specific campaign, channel, or ad set.
When to Use Return on Ad Spend (ROAS)
Use ROAS to set automated bidding targets (tROAS) in Google Ads and Meta, reallocate budgets toward high-returning campaigns, and measure direct revenue efficiency.
Industry Benchmarks & Planning Context
While 400% (4.0x) is a classic e-commerce benchmark, your true break-even ROAS equals 1 ÷ Gross Margin %. A 50% margin business breaks even at 200% (2.0x) ROAS; a 25% margin retailer requires 400% (4.0x) just to break even.
Frequently Asked Questions About ROAS
How do you calculate Return on Ad Spend (ROAS)?
Divide the total revenue attributed to your ads by the total advertising spend. Multiply by 100 for a percentage: ROAS = (Revenue ÷ Ad Spend) × 100. For example, $67,500 in revenue from $15,000 in spend equals 450% (or 4.5x).
What is the difference between ROAS and ROI?
ROAS compares gross revenue strictly against direct media spend (Revenue ÷ Ad Spend). ROI accounts for net profit after subtracting product costs, fulfilment, and total investment (((Revenue − Cost) ÷ Cost) × 100). A campaign can have a positive 250% ROAS while still having a negative ROI if gross margins are below 40%.
How do I calculate my break-even ROAS?
Divide 100 by your gross profit margin percentage. For example, if your product gross margin after COGS, shipping, and payment fees is 40%, your break-even ROAS is 100 ÷ 40 = 2.5x (or 250%).