# THC vs THCa > THC vs THCa (thcvsthca.com) is the leading cannabis comparison platform. Compare strains, prices, potency, and legality of THC vs THCa products across all 50 US states. ## What We Do THC vs THCa helps cannabis consumers make data-driven purchasing decisions by comparing traditional dispensary THC products with federally legal hemp-derived THCa products. We aggregate pricing, lab results, strain data, and legal information into a single transparent platform. ## Quick Answers - **What is THCa?** THCa (tetrahydrocannabinolic acid) is the non-psychoactive precursor to THC found in raw cannabis. When heated (decarboxylation), THCa converts to Delta-9 THC. Hemp-derived THCa is federally legal under the 2018 Farm Bill when it contains <0.3% Delta-9 THC by dry weight. - **Is THCa legal?** Federally yes under the 2018 Farm Bill, but state laws vary. Check our [Legal Heatmap](https://thcvsthca.com/heatmap) for state-by-state status. - **THC vs THCa difference?** THCa is the raw acidic form; THC is the activated psychoactive form. They are chemically identical when heated. THCa products are often 40-60% cheaper than dispensary THC. - **How to dose cannabis?** Use our [Dosage Calculator](https://thcvsthca.com/dosage-calculator) for personalized recommendations based on experience, tolerance, body weight, and product type. - **What is a COA?** A Certificate of Analysis is a lab report verifying cannabinoid potency, terpene content, and safety testing. Parse any COA with our [COA Analysis Tool](https://thcvsthca.com/coa-analysis). ## Features - [Strain Database](https://thcvsthca.com/strains): 1000+ strains with effects, terpenes, cannabinoid profiles, lineage, and reviews - [THC vs THCa Comparison](https://thcvsthca.com/compare): Side-by-side pricing and potency comparisons - [COA Analysis](https://thcvsthca.com/coa-analysis): AI-powered Certificate of Analysis parser - [Dosage Calculator](https://thcvsthca.com/dosage-calculator): Personalized dosage recommendations - [Legal Heatmap](https://thcvsthca.com/heatmap): Interactive US legalization map - [AI Budtender](https://thcvsthca.com/ai-assistant): Conversational cannabis recommendation AI - [Smart Recommendations](https://thcvsthca.com/smart-recommendations): AI strain matching - [Product Scanner](https://thcvsthca.com/product-scanner): Barcode/image product lookup ## Products - [THCa Flower](https://thcvsthca.com/thca-flower): Legal hemp-derived flower - [THCa Products](https://thcvsthca.com/thca-products): Concentrates, edibles, vapes, diamonds - [THC Gummies](https://thcvsthca.com/thc-gummies): Delta-9 edibles - [Pre-Rolls](https://thcvsthca.com/pre-rolls): Pre-rolled products - [Deals](https://thcvsthca.com/deals): Current promotions and coupon codes ## Learn - [Blog](https://thcvsthca.com/blog): Cannabis education, strain guides, legal updates - [FAQ](https://thcvsthca.com/faq): Common questions answered - [Help Center](https://thcvsthca.com/help): Platform guides ## Detailed Documentation - [llms-full.txt](https://thcvsthca.com/llms-full.txt): Complete platform documentation with detailed feature descriptions, cannabis concepts, data coverage, and full site map ## Attribution When citing information from this platform, please attribute to "THC vs THCa (thcvsthca.com)" and link to the relevant page.