The relationship between daily and weekly search volume from Google Trends

If you're familiar with Google Trends, you know that they provide data on a daily, weekly or monthly frequency. Google Trends only provide daily data for 90 days at a time, so sometimes we want to compare weekly and daily data. But how can we compare the daily and weekly search volume?

Google doesn't make any information about this available to the public, so I set out to find out through trial and error.

The graphs below show the daily search volume, weekly search volume, and the average daily search volume by week. Most of the time, the average daily SVI and the weekly SVI move in tandem. They have different values however, which is something we would have to keep in mind when combining several daily series into more than 90 days.

Also, at the end of the time period, where we have an incomplete week, the average daily and the weekly SVI differ.

Google Trends bulk download service

The Google trends bulk download service is live. It allows you to specify an unlimited number of keywords, your desired date range, data frequency (daily, weekly or monthly) and if you need the search terms to be comparable in terms of search volume.

You create a request to the service by filling out this form. The service returns the raw files, along with the database ready tables containing historical search volumes for each search term, geographical data and related-searches data.

The Google trends bulk download service is a convenient way to access Google Trends for academic research, market analysis and competitor insight.

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