Strength and labels
What do 5%, 10% and 20% CBD mean?
Convert CBD percentages into approximate mg/ml and understand why the total bottle size still matters.
Key takeaways
- Compare the measurable label facts before interpreting marketing language.
- Use current manufacturer information and official UK sources.
- The FSA advises healthy adults to limit CBD from food to 10mg a day.
- This guide does not diagnose, prescribe or recommend CBD for symptoms.
Percentage is a concentration shorthand
On common oil labels, 1% is approximately 10mg/ml. That makes 5% about 50mg/ml, 10% about 100mg/ml and 20% about 200mg/ml. Confirm the actual manufacturer label because presentation conventions can vary.
Percentage is not total CBD
A 10ml bottle at 5% contains roughly 500mg CBD; a 30ml bottle at the same percentage contains roughly 1,500mg. Percentage stays the same while the container total changes.
Use consistent units
Our strength calculator converts the bottle facts into mg/ml, approximate percentage and price per 100mg so products can be compared on the same basis.
Sources and checking notes
Official guidance and product information can change. Sources were checked on 3 August 2026; follow the current product label and latest authority advice.
Continue with the CBD strength calculator, lab-report reader or product comparison builder.
Contextual product
1000mg CBD Active Heat Balm (50ml)
1000mg CBD Active Heat Balm (50ml) from Orange County CBD. Compare CBD skincare & topicals, 1,000mg CBD in the selected listed variant, 50ml format and available variants before visiting the retailer.
£35.00 • 1,000mg CBD
References
- Food Standards Agency, "CBD guidance for consumers", 2025.
- Food Standards Agency, "Public list of CBD products", 2025.
- UK Home Office, "Cannabis-based products for medicinal use", 2024.
Author
Alex
Publisher and editor of thCBDx, managing product comparisons and evidence checks.
Evidence checked by
Alex
Evidence checked against the named sources and current FSA guidance.
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