Google Trends

Free index of relative search interest over time and by region

Overview

Google Trends shows relative search interest in topics and queries over time and by region, from global down to city level[13]. It is the standard free source for seasonality and for comparing whether interest in one term is rising or falling against another.

Google explains that each data point is divided by total searches for its location and time range and then scaled from 0 to 100, so Trends reports share of searches rather than absolute volumes; regions with the same index can have very different numbers of searches[13]. The data is a sample of Google searches, which Google says is sufficient given its volume and fast enough to reflect events within minutes[13]. Google lists several limitations: low-volume terms are filtered out and often appear as zero; repeated searches by the same person are removed; queries with special characters are filtered; searches made by Google’s own products, including AI Mode and AI Overviews, are excluded; and statistical noise is added for privacy, so spikes on low-interest queries may not reflect real activity[13]. Trends is therefore a complement to a volume-based tool, not a replacement.

Google Trends features

  • 0–100 normalised interest index
  • Regional breakdown to city level
  • Topic and query comparisons
  • Near-real-time sampled data

Google Trends pricing

Free.

Google Trends strengths and limitations

Strengths

  • Free
  • Shows seasonality and trend direction
  • City-level geography
  • Updates within minutes

Limitations

  • No absolute search volumes
  • Low-volume terms shown as zero
  • Privacy noise on small queries
  • Excludes Google's AI surfaces

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