Search volume estimates monthly demand for a query. It is calculated by data providers from clickstream data, keyword planner APIs, and statistical modelling. The figure is always an estimate, never a precise count.
How it is calculated
Providers combine anonymised browser panels, ISP data, and Google Keyword Planner ranges, then smooth the result across the trailing twelve months. Seasonal queries such as "christmas gifts" are usually reported as an annual average, which understates December peaks and overstates January troughs.
Example
A query with 12,000 average monthly searches might see 40,000 searches in November and 2,000 in July. Always check the twelve-month trend before deciding whether a keyword is worth targeting.
How SEM Optimiser reports it
SEM Optimiser stores search volume exactly as the provider returns it. Nulls remain null, and the twelve-month trend line is available on every keyword detail page so seasonality is never hidden behind an annual average.
Related terms
- Keyword Difficulty
Keyword difficulty is a 0-to-100 score that estimates how hard it is for a website to rank in the top ten organic results for a given search query.
- CPC (Cost Per Click)
CPC is the average price an advertiser pays each time a user clicks a paid search ad triggered by a specific keyword.
- Keyword Intent
Keyword intent is the classification of a search query by what the user is trying to accomplish, typically informational, navigational, commercial, or transactional.
- SERP (Search Engine Results Page)
A SERP is the page a search engine returns in response to a query, containing organic results, paid ads, and specialised features such as knowledge panels or AI Overviews.