Regex Quiz
Gauge your practical grasp of regular expressions in about 10 minutes. Tackle 16 realistic matching and extraction challenges and get a clear result band with no sign up.
08:30
Scale Explorer
How the Scales are Structured
DATA-BASED USER COHORTS
Who Usually Takes This Test?
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
Benchmarking
See How You Compare
Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Below is a preview of how scores are typically distributed across each scale.
Regex Knowledge (RK)
Regex Knowledge (RK)
Average
9.9
Normal range
7.2 — 12.6
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- a1b
- a1b2b
- 1b2b
- b2b
- Order
- 5
- 507
- Order 507
- The m flag lets ^ match at the start of a line
- The caret ignores all text before the letters H and i
- A pattern without a dot automatically skips the first line
- The m flag makes matching case-insensitive
WHAT THE TEST MEASURES
About This Assessment
Regex Quiz - Symptoms and Signs
Test your practical understanding of regular expressions with this free 16-question regex quiz. Work through realistic matching and extraction examples involving anchors, character classes, quantifiers, groups, flags, boundaries, and lookaheads. Questions assume JavaScript-style regex syntax and standard string-search behavior unless stated otherwise. Your total places your knowledge in one of three clear result bands. It is quick to complete, and no sign-up is required.
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