CK-12 is a free online platform offering high-quality educational resources, including interactive textbooks, videos, and practice exercises across various subjects such as math, science, and engineering. It's designed to enhance learning for students of all grades by providing personalized learning experiences and adaptive assessments. With a focus on STEM education, CK-12 empowers learners and educators with tools that facilitate a deeper understanding of concepts in a collaborative and engaging manner, making education accessible to everyone, anywhere.
Rank by traffic
In July 2025, ck12.org saw a decrease in search traffic, reaching 4.8M visits, which is a decrease of 609K visits compared to the previous month. The traffic value decreased to 281K, a reduction of 107K.
For ck12.org, United States dominates traffic with 2.2M visits, a decrease of 482K from the previous month, making up 46.7% of the total traffic.
Location | Traffic | Share | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 2.2M | −482K | 46.7% | |||||||
| 671K | +678 | 14.0% | |||||||
| 238K | −47K | 4.9% | |||||||
| 232K | −2.2K | 4.8% | |||||||
| 226K | +4.8K | 4.7% | |||||||
ck12.org ranks #1 for "how much does a gallon of water weigh" in United States and receives 6.4K monthly visits from this keyword alone, an increase of 87 from the previous month.
Keyword | Volume | Traffic | Position | ||||||
|---|---|---|---|---|---|---|---|---|---|
| how much does a gallon of water weigh | 64K | +1.0K | 6.4K | +87 | 1 | ||||
| ck-12 | 4.1K | −500 | 4.0K | −235 | 1 | ||||
| ck 12 | 3.9K | −400 | 3.8K | −407 | 1 | ||||
| ck12 | 2.6K | −3.8K | 2.6K | −3.7K | 1 | ||||
| which table represents a linear function? | 9.4K | −2.6K | 2.5K | −809 | 1 | ||||
mathway.com, symbolab.com and rapidtables.com rank in the top 10 organic search results for the same keywords that ck12.org gets the most traffic from. Discover more competitors of ck12.org.
Website | Traffic | Pages | |||||||
|---|---|---|---|---|---|---|---|---|---|
| mathway.com | 11M | 98K | |||||||
| symbolab.com | 7.7M | 71K | |||||||
| rapidtables.com | 6.1M | 7.7K | |||||||
| hellothinkster.com | 664K | 63K | |||||||
| thecalculatorsite.com | 3.0M | 318 | |||||||
As of July 2025, ck12.org's Domain Rating is 75. ck12.org is linked by 18K websites, indicating a decrease of 23 referring sites from the previous month.
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