Ck12: See Their Revenue, Competitors, Traffic, and Reviews (August 2025)

Review (August 2025)

Ck-12 foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from arithmetic to history

10k

Estimated Revenue

2.01M

Website Visitors

4/5

Trustpilot Score

What are the monthly traffic metrics for Ck12?

6/mo Traffic Growth

97.50%

All Time Traffic Growth

Create Free Account

Monthly Hits

2M

Time on Site

3.1Mins

Bounce Rate

60%

How fast is Ck12 growing?

Ck12 has grown by 74.3% in the last 6 months according to SimilarWeb.

How do people interact with Ck12?

Last month, Ck12 received 2M visitors who spent an average of 3.1 minutes on the website and visited 3.0 different pages per session. Overall, 60% of people bounce on the first visit.

How do people find Ck12?

431.2k people (21%) visit Ck12 directly. 1.5M (74%) people search for them in Google. Whereas, 9.7k (0%) discover Ck12 through Facebook, Reddit, and YouTube. 6.2k (0%) visitors come from Ck12's email newsletters. Finally, 255.1 (0.0%) people come from affiliates and or paid referrals.

Who uses Ck12?

Ck12's top market is the United States and they receive 959.9k (47.7%) people.
Then the 2nd is Philippines with 144.4k (7.2%).
The 3rd is is Colombia with 99.6k (5.0%).

Traffic Growth (last 6 months)

All Traffic Source

Country Share

Traffic Growth (last 12 months)

See 12/mo Traffic Stats

What are Ck12's ads on Google?

Google Ads

Ck12.org - CK-12 Digital FlexBooks®‎

https://www.ck12.org/standards/Algebra/US.CCSS/7/

Free Digital Textbooks For K-12. Start Exploring Our Library Today! State Standards Aligned. 100% Free Resources. Grades K-12. Test Preparation. Courses: Worksheets, Adaptive Practice, Interactives and SIMS.

Practice math and science | Smart and 100% free | ck12.org

https://www.ck12.org/assessment/ui/browse/practice/

Work towards mastery at your own pace. Intelligent quizzes powered by AI and tailored for each student. Student insights. LMS integrations. CCSS and NGSS. Quizzes that adapt to you. Learn your own way. Engage students. STEM education. 100% free resources.

Free Online Math Practice | CK-12 Foundation | ck12.org‎

https://www.ck12.org/assessment/ui/browse/practice/

Over 120,000 Practice Questions. Algebra, Geometry, and More! Test Preparation. 100% Free Resources. Grades K-12. State Standards Aligned. Courses: Worksheets, Adaptive Practice, Interactives and SIMS.

Engaging students - Interactive math textbooks - ck12.org

https://flexbooks.ck12.org/flexbooks/student/

Interactive content and simulations. Personalized quizzes driven by AI. All for free. Interactive content, personalized learning, and classroom insights. All for free.

Keyword: math for 8th grade

Practice Tests for Grade 1-12 - Free Adaptive Practice Tests

https://www.ck12.org/assessment/ui/browse/practice/

Download your adaptive practice worksheet for the concepts you're learning in your class. Designed to help improve students skill levels with easy, engaging quizzes and games. CCSS and NGSS. State standards aligned. Learn your own way. 100% free resources.

Keyword: algebra problems

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Review (August 2025)

Ck-12 foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from arithmetic to history

6/mo Traffic Growth

97.50%

All Time Traffic Growth

Monthly Hits

2M

Time on Site

3.1Mins

Pages per Visit

3.0

Bounce Rate

60%

How fast is Ck12 growing?

Ck12 has grown by 74.3% in the last 6 months according to SimilarWeb.

How do people interact with Ck12?

Last month, Ck12 received 2M visitors who spent an average of 3.1 minutes on the website and visited 3.0 different pages per session. Overall, 60% of people bounce on the first visit.

How do people find Ck12?

431.2k people (21%) visit Ck12 directly. 1.5M (74%) people search for them in Google. Whereas, 9.7k (0%) discover Ck12 through Facebook, Reddit, and YouTube. 6.2k (0%) visitors come from Ck12's email newsletters. Finally, 255.1 (0.0%) people come from affiliates and or paid referrals.

Who uses Ck12?

Ck12's top market is the United States and they receive 959.9k (47.7%) people.Then the 2nd is Philippines with 144.4k (7.2%).The 3rd is is Colombia with 99.6k (5.0%).

Traffic Growth (last 6 months)

All Traffic Source

Country Share

Traffic Growth (last 12 months)

Ck12's top market is the United States and they receive 959.9k (47.7%) people.
Then the 2nd is Philippines with 144.4k (7.2%).
The 3rd is is Colombia with 99.6k (5.0%).