Free Tool

ROAS & MER Calculator

Track channel-level ROAS, overall Marketing Efficiency Ratio, and break-even ROAS across every ad channel, in real time.

MER (Overall)

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Total Revenue ÷ Total Ad Spend

Break-even ROAS

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Based on your gross margin

Total Ad Spend

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Across all channels

Currency Select target currency

Total Revenue ($) All revenue, not just from ads

Gross Margin (%) Used to calculate break-even ROAS

Edit channel names inline

Channel	Ad Spend ($)	Channel Revenue ($)	ROAS

Measures revenue generated per dollar spent on a specific channel. High ROAS looks good, but doesn't tell you if the business is profitable.

Revenue ÷ Ad Spend

The true north-star metric. Divides all revenue by all ad spend, exposing cross-channel halo effects ROAS misses.

Total Revenue ÷ Total Ad Spend

The minimum ROAS you need to cover your cost of goods. Any channel below this number is destroying margin.

1 ÷ Gross Margin %