Total Number of International IQ Test Takers
Published by: International IQ Test
Last updated:
Summary
From 01/01/2018 to 12/19/2025, the International IQ Test recorded 21,174,884 IQ test results.
Under stricter deduplication, that total drops to 16,965,148 results after filtering (unique email address and unique IP address, deduplicated annually).
Counting Method
We publish three metrics, listed from broadest to strictest:
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Total IQ results: All IQ test results generated during the period, with no filtering.
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Unique email: IQ test results after annual deduplication by email address (removes repeat uses of the same email within a given year).
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Unique email and IP: IQ test results after annual deduplication by both email address and IP address.
Results
| Metric |
Definition |
Value |
| Total IQ results |
IQ test results generated over the period (including retakes) |
21,174,884 |
| Unique email |
Annual deduplication by email address |
19,698,124 |
| Unique email and IP |
Annual deduplication by both email address and IP address |
16,965,148 |
Additional Traffic Indicator
For context, more than 420,000 unique visitors accessed the International IQ Test website from 11/21/2025 to 12/21/2025, based on the Cloudflare traffic statistics shown below.
This metric is not a measure of monthly test takers, but it does provide one indicator of the International IQ Test’s overall reach and popularity.
Cloudflare unique visitor traffic (11/21/2025–12/21/2025)
Conclusion
Over the period covered, the International IQ Test generated more than 16.9 million results after annual deduplication using both a unique email address and a unique IP address.
Even stricter internal filters are applied when compiling the annual rankings to help prevent cheating.
To reduce abuse and prevent bots and cheaters from adapting, these stronger filters are not published. The same anti-bot and anti-cheating controls are applied consistently—without exception—to all results included in the rankings at the time the annual rankings are compiled.