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Calculate conversion rate and cost per conversion from traffic, leads, or sales.
Use this conversion rate calculator to measure how efficiently visitors turn into leads, signups, or purchases. Enter total visitors, total conversions, and ad spend to estimate your conversion rate and cost per conversion. The calculator is designed to give a fast answer, but the quality of the answer still depends on accurate inputs and a clear idea of what decision you are trying to support.
- Enter Visitors, Conversions, and Ad Spend using the same units you plan to compare or report.
- Read the main conversion rate first, then use the supporting outputs to understand the trade-offs behind that result.
- Compare your numbers with the worked examples below if you want a quick reasonableness check.
Conversion rate shows how much of your traffic completes the target action, while cost per conversion links campaign performance directly to spend. On this page, the primary output is conversion rate.
Scenario 1: 10,000 visitors, 240 conversions, $1,200 ad spend. Inputs used: visitors: 10000, conversions: 240, adSpend: 1200. Example result: 2.40% conversion rate. 240 conversions from 10,000 visitors gives a 2.40% conversion rate. With $1,200 in spend, cost per conversion is $5.00. Scenario 2: 2,500 visitors, 95 conversions, $760 ad spend. Inputs used: visitors: 2500, conversions: 95, adSpend: 760. Example result: 3.80% conversion rate. This scenario converts at 3.80%, and the cost per conversion comes to $8.00 with the chosen spend.
Core formula: conversion rate = conversions / visitors * 100. The calculator compares completed actions with total traffic to show how efficiently a page, campaign, or funnel turns visitors into results.
- Cost per conversion uses ad spend divided by conversions.
- Consistent attribution windows matter if you compare campaigns across time periods.
Use this calculator when reviewing landing pages, campaigns, funnels, or channel performance and you need a fast conversion benchmark. Related paths for follow-up analysis include roi calculator, profit margin calculator, average calculator, and break even calculator.
Most bad outputs come from a few repeated input errors or interpretation mistakes. Use this short checklist before relying on the result.
- Comparing campaigns that use different conversion definitions.
- Using mismatched time windows for traffic, conversions, and spend.
- Looking only at conversion rate without checking conversion quality or revenue.
