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Both calculators run independently — change the inputs on either side to compare results.

Lead Conversion Rate Calculator

Calculate lead conversion rate by dividing converted leads (qualified, accepted, or closed) by total leads received, expressed as a percentage. Use it to evaluate sales-pipeline efficiency, optimize lead-source quality, and forecast revenue from top-of-funnel pipeline.

Converted Leads

Total Leads

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Marketing

Marketing ROI Calculator

Calculate marketing ROI as the percentage return generated by marketing spend over the cost of that spend. Use it for executive-level marketing performance reporting, channel allocation decisions, and justifying marketing budget against business outcomes.

Revenue from Marketing ($)

Marketing Investment ($)

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Key differences

	Lead Conversion Rate Calculator	Marketing ROI Calculator
Category	Marketing	Marketing
Inputs required	2	2
Result	Lead Conversion Rate (%)	Marketing ROI (%)
What it does	Calculate lead conversion rate by dividing converted leads (qualified, accepted, or closed) by total leads received, expressed as a percentage. Use it to evaluate sales-pipeline efficiency, optimize lead-source quality, and forecast revenue from top-of-funnel pipeline.	Calculate marketing ROI as the percentage return generated by marketing spend over the cost of that spend. Use it for executive-level marketing performance reporting, channel allocation decisions, and justifying marketing budget against business outcomes.