CBD Cafe tools help you check arithmetic and organize product evidence without making medical, dosing, safety, drug-testing, or legal decisions for you. The calculations run in your browser and are designed to make labels, prices, and lab reports easier to inspect.
Current Tools
CBD Label and Cost Calculator
Check package math, CBD per serving, implied serving counts, delivered cost per labeled CBD milligram, and side-by-side product cost math.
COA Red-Flag Checker
Work through product/batch matching, dates, cannabinoid reporting, laboratory identity, contaminant panels, and missing or conflicting evidence.
Federal Hemp Law Status Tracker
See current federal hemp law, the November 12 and December 11, 2026 transition dates, pending bills, FDA implementation status, and source-linked updates.
CBD Product Comparison Builder
Compare two to four published Product Passports by form, batch, chemistry review, evidence findings, and documentation status without a product ranking.
CBD Tincture Serving-Math Calculator
Convert a tincture label into CBD per mL, implied servings, CBD per labeled serving, and marked-volume math without a personal dosing recommendation.
CBD COA Batch-Match Checklist
Compare product name, form, strength, variant, lot, seller lookup path, report identifiers, and dates to see whether a COA belongs to the exact product and batch.
CBD COA Unit Converter
Convert mg/g, mg/mL, percent, serving, unit, and package math while refusing mass-to-volume conversions when density is missing.
Which CBD Tool Should You Use?
| If you need to… | Use this tool | Best next step |
|---|---|---|
| Check CBD per serving, package math, or price per labeled milligram | CBD Label and Cost Calculator | Read the full CBD label guide |
| See whether a lab report matches the exact product and lot | CBD COA Batch-Match Checklist | Learn how to read a CBD COA |
| Record missing, conflicting, or unclear fields on a COA | COA Red-Flag Checker | See batch-specific Product Passports |
| Convert potency or package units without guessing density | CBD COA Unit Converter | Check what the reported units mean |
| Work out tincture label math | CBD Tincture Serving-Math Calculator | Review the CBD oils and tinctures guide |
| Compare documented products side by side | CBD Product Comparison Builder | Browse the Product Passport library |
| Check the current federal hemp-law transition | Federal Hemp Law Status Tracker | Read the federal CBD law guide |
A Simple CBD Product-Checking Workflow
- Start with the label. Use How to Read a CBD Label to confirm the product identity, labeled CBD amount, serving structure, ingredients, warnings, and batch number.
- Check the math. Use the label calculator or tincture calculator if the package numbers are hard to reconcile.
- Match the batch. Read How to Read a CBD COA, then confirm the report belongs to the same product, strength, variant, and lot with the CBD COA Batch-Match Checklist.
- Review the evidence. Use the COA checker and unit converter to organize potency, THC, contaminant, laboratory, and reporting-limit information without turning those fields into a safety score.
- Compare documented products. Use Product Passports, Brand Report Cards, and the Product Comparison Builder when you want to compare evidence instead of marketing claims.
What These Tools Do Not Do
- They do not recommend a personal CBD amount or serving.
- They do not determine whether a product is safe for you.
- They do not predict drug-test results.
- They do not determine whether a product is legal in your location.
- They do not turn incomplete evidence into a passing result.
For label literacy, use How to Read a CBD Label. For laboratory reports, use How to Read a CBD COA. For batch-specific examples, browse CBD Product Passports.
When a Calculator Is Not the Right Tool
Use CBD Safety for side effects, drug interactions, testing concerns, children, pregnancy, unexpected reactions, and pets. Use CBD and Hemp Laws for federal, state, and travel rules. Use CBD Products to compare oils, gummies, capsules, topicals, flower, vapes, and spectrum claims. Use CBD Product Quality for Product Passports, brand documentation, warning letters, and product-problem reporting.