Advertising metrics are easiest to understand as a chain: impressions create opportunities for clicks, clicks can become conversions, and conversions can become revenue or customers. This toolkit keeps each formula separate while linking the metrics that belong together.
Start with the first question, then move through the connected calculations. You can jump in anywhere, but the sequence keeps the task coherent.
Find cost per 1,000 impressions.
↗ 02 Next calculation CTRCalculate click-through rate.
↗ 03 Next calculation CPCFind advertising cost per click.
↗ 04 Next calculation Conversion RateFind conversion percentage.
↗ 05 Next calculation CPAFind cost per acquisition.
↗ 06 Next calculation ROASCalculate return on ad spend.
↗Each tool is free, works without an account and links to its formula, assumptions and related calculators.
Find cost per 1,000 impressions.
Calculate click-through rate.
Find advertising cost per click.
Find conversion percentage.
Find cost per acquisition.
Calculate return on ad spend.
Calculate customer acquisition cost.
Find average revenue per order.
Estimate gross-profit customer lifetime value.
NumLuma groups tools around real tasks so you can move from one calculation to the next without starting your research over.
There is no single answer. CPM measures exposure cost, CTR measures click response, CPC measures traffic cost, CPA measures conversion cost, and ROAS compares attributed revenue with ad spend. The useful metric depends on the campaign goal.
Cheap clicks are not automatically valuable clicks. If those visitors convert poorly or generate low-value customers, the campaign can still underperform economically.
Not always. CPA is often tied to a defined campaign conversion, while CAC can include a broader set of marketing and sales costs required to acquire new customers.