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Choose ROAS or CPM
Use the tabs: ROAS needs revenue and ad spend; CPM needs total cost and impressions.
ROAS & CPM Calculator
Switch tabs for return on ad spend or cost per mille. Values update as you type.
Formulas (LaTeX)
ROAS is unitless revenue per ad dollar. CPM is cost per one thousand impressions.
Pro Tip
This page uses ROAS > 3 as a simple health signal—your break-even ROAS depends on margins. CPM benchmarks vary wildly by channel; compare against your own history, not generic averages alone.
How to Use the ROAS & CPM Calculator
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Enter live numbers
Fields update results as you type—no separate calculate button.
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Read the badge
For ROAS, values above 3 show a Healthy badge; at or below 3 show Review needed (rule of thumb only).
ROAS vs CPM
ROAS (return on ad spend) is revenue divided by advertising cost. It answers how much revenue you earn per dollar of media spend.
CPM (cost per mille) is the cost to show your ad one thousand times. It is useful for awareness and reach planning; combine it with conversion data for full-funnel decisions.
Frequently Asked Questions
It is a simple visual benchmark for this tool, not universal advice. Replace it with your margin-based target (for example break-even ROAS from unit economics).
CPM = (total cost ÷ impressions) × 1,000. You also get cost per single impression on the results card.
They measure different things. ROAS ties to revenue outcomes; CPM ties to reach efficiency. Performance campaigns usually prioritize ROAS or CPA; awareness campaigns often track CPM or reach.