CBD oil strength is one of the easiest parts of a label to misunderstand. A bottle might say 10%, 1000mg, 30ml or even quote an amount per drop, but those numbers do not all mean the same thing.
The simplest way to compare CBD oils fairly is to separate three things:
- Total CBD (mg) — how much CBD is in the whole bottle.
- Bottle volume (ml) — how much liquid is in the bottle.
- Concentration (mg/ml) — how much CBD is present in each millilitre.
If you remember only one formula from this guide, use this one:
CBD concentration (mg/ml) = total CBD in the bottle (mg) ÷ bottle volume (ml)
That calculation makes it much easier to compare products from different brands, bottle sizes and strength formats without relying on vague terms such as “strong”, “extra strength” or “high potency”.
Browse our current CBD products in Malta, or continue below to learn how to compare oils properly before buying.
Last updated: November 2026
CBD Oil Strength Explained in 30 Seconds
| Label information | What it tells you | What it does not tell you |
|---|---|---|
| Total mg | Total CBD in the whole bottle | How concentrated the liquid is unless bottle size is also known |
| ml | Total liquid volume | CBD strength by itself |
| mg/ml | CBD concentration per millilitre | Whether the product is full-spectrum, broad-spectrum or isolate |
| % | A concentration figure, if the manufacturer defines the basis clearly | The exact mg/ml if the percentage basis is unclear |
The key point is that total CBD and concentration are different measurements. Two bottles can contain the same total CBD while having very different strength per millilitre.
Total CBD vs Concentration: Why 1000mg Can Mean Two Very Different Products
Imagine two bottles that both contain 1000mg CBD:
- Bottle A: 1000mg in 10ml = 100mg/ml
- Bottle B: 1000mg in 30ml = 33.3mg/ml
Both contain the same total amount of CBD, but Bottle A is roughly three times as concentrated.
This is one of the most important differences many comparison guides miss. A large number printed on the front of the bottle may look impressive, but without the bottle volume it is not enough to judge strength.
How to Calculate CBD mg per ml
The calculation is straightforward:
Total CBD mg ÷ bottle ml = CBD mg/ml
Examples:
| Total CBD | Bottle size | Concentration |
|---|---|---|
| 500mg | 10ml | 50mg/ml |
| 1000mg | 10ml | 100mg/ml |
| 1500mg | 10ml | 150mg/ml |
| 2000mg | 10ml | 200mg/ml |
| 2400mg | 10ml | 240mg/ml |
| 3000mg | 10ml | 300mg/ml |
| 4000mg | 10ml | 400mg/ml |
| 7200mg | 30ml | 240mg/ml |
Notice the final example: 7200mg sounds dramatically stronger than 2400mg, but if the 7200mg bottle is 30ml and the 2400mg bottle is 10ml, both are actually the same concentration: 240mg/ml.
That is why bottle size always matters.
What Does CBD Percentage Mean?
CBD oils are often sold as 5%, 10%, 15%, 20%, 30% or 40%. In much of the retail CBD market, manufacturers use percentage as a shorthand for concentration and commonly pair, for example, a 10% 10ml oil with 1000mg total CBD.
However, percentages can technically be expressed on different bases, such as weight-per-volume or weight-per-weight. Density also matters when converting between those systems. For that reason, do not rely on percentage alone when the manufacturer does not also state total CBD or mg/ml.
A recent CBD strength guide from Endoca uses the common retail convention that 1% corresponds to approximately 10mg/ml, while other technical sources correctly note that this conversion should only be treated as exact when the percentage basis is defined. The safest consumer approach is therefore:
- Read the stated percentage.
- Check total CBD in mg.
- Check bottle volume in ml.
- Calculate mg/ml yourself.
- Confirm the figures agree with the label or Certificate of Analysis.
For context, the Malta Medicines Authority also expresses cannabinoid concentrations for medicinal oil/extract products in mg/ml, reinforcing why mg/ml is the clearest concentration measure for liquid cannabinoid products. Medicinal cannabis products are a separate regulatory category from ordinary retail CBD products, but the concentration principle is the same.
CBD Strength Table: Common 10ml Bottle Examples
The table below shows the common retail relationship seen on many 10ml CBD oil labels. Always verify the actual product label because manufacturers can define percentage differently.
| Label strength | Common total CBD in 10ml | Common concentration |
|---|---|---|
| 3% | 300mg | 30mg/ml |
| 5% | 500mg | 50mg/ml |
| 10% | 1000mg | 100mg/ml |
| 15% | 1500mg | 150mg/ml |
| 20% | 2000mg | 200mg/ml |
| 24% | 2400mg | 240mg/ml |
| 30% | 3000mg | 300mg/ml |
| 40% | 4000mg | 400mg/ml |
Real Example from Our Range: Same Strength, Different Bottle Size
Our current Enecta Full Spectrum CBD Oil 24% is available in two bottle sizes:
- 10ml: 2400mg total CBD
- 30ml: 7200mg total CBD
The 30ml bottle contains three times as much total CBD because it contains three times as much liquid, but the concentration remains the same at approximately 240mg/ml.
This is the clearest example of why a larger total milligram figure does not necessarily mean a “stronger” oil.
Comparing Different Strengths in Our Current CBD Range
Our catalogue also includes different concentration formats, including:
- Enecta 15% Full Spectrum CBD Oil — 1500mg in 10ml
- Broad Spectrum CBD Oil 20% — 2000mg in 10ml
- Enecta 24% Full Spectrum CBD Oil — 2400mg in 10ml or 7200mg in 30ml
- Hemnia Full Spectrum CBD Oil 40% — 4000mg in 10ml
- Premium CBD Oil 40% — 4000mg in 10ml
This does not mean the strongest product is automatically the best product for every customer. Concentration is only one part of the buying decision.
Strength Is Not the Same as Spectrum
A 20% full-spectrum CBD oil and a 20% broad-spectrum CBD oil can have a similar CBD concentration while having different cannabinoid profiles.
Strength tells you how concentrated the CBD is.
Spectrum describes what else is present alongside the CBD, such as minor cannabinoids, terpenes and possible trace THC depending on the formulation.
So when comparing oils, ask two separate questions:
- How much CBD is present per ml?
- What type of extract is being used?
We are preparing a dedicated full-spectrum vs broad-spectrum vs isolate buying guide to explain that distinction in more detail.
CBD per Drop: Useful Only When the Manufacturer Verifies the Drop Size
Many CBD guides assume a fixed number of drops per millilitre. That can make the maths look easy, but droppers are not perfectly standardised. Drop size can vary with the dropper opening, oil viscosity, temperature and how the user holds the bottle.
For that reason, mg per drop should come from the manufacturer’s verified product information whenever possible.
If a product only states total mg and bottle volume, mg/ml is still reliable because it does not depend on drop size.
Higher Strength Does Not Automatically Mean Better Value
Price comparisons can be misleading in the same way as strength comparisons.
A useful additional calculation is:
Cost per 1000mg CBD = product price ÷ total CBD mg × 1000
This lets you compare value between bottle sizes and brands without assuming the cheapest bottle is the cheapest CBD.
But price per milligram should not be the only consideration. Also check:
- extract type;
- carrier oil;
- batch testing;
- THC result where relevant;
- ingredient list;
- brand traceability;
- bottle size;
- current Certificate of Analysis.
How to Compare Two CBD Oils Fairly in 30 Seconds
When comparing two bottles, ignore the marketing language first and work through this checklist:
- Find total CBD in mg.
- Find bottle volume in ml.
- Calculate mg/ml.
- Check spectrum: full-spectrum, broad-spectrum or isolate.
- Check carrier oil: MCT, hemp seed, olive oil or another base.
- Check the COA: does the batch result support the label?
- Check price per 1000mg CBD if value matters.
That is a much more useful comparison than simply choosing the bottle with the largest number on the front.
Common CBD Label Mistakes to Avoid
1. Comparing total mg without checking bottle size
1000mg in 10ml and 1000mg in 30ml are not the same concentration.
2. Assuming “40%” automatically means better
Higher concentration means more CBD per ml. It does not prove higher quality or suitability.
3. Treating hemp seed oil as CBD
Hemp seed oil can be used as a carrier oil, but the seed oil itself is not equivalent to a CBD-rich hemp extract.
4. Assuming every dropper gives the same drop size
Use verified manufacturer data rather than an internet-wide assumption about drops per ml.
5. Confusing total cannabinoids with total CBD
A product can contain other cannabinoids in addition to CBD. Check whether the milligram figure refers specifically to CBD or to a broader cannabinoid total.
6. Ignoring the batch report
A well-presented label is not a substitute for appropriate batch documentation.
CBD Strength Is Not a Dosing Recommendation
This guide is designed to help compare product concentration, not to tell anyone how much CBD to consume.
European safety guidance has become more cautious. In February 2026, EFSA set a provisional safe intake level of 0.0275mg/kg body weight per day — approximately 2mg/day for a 70kg adult — for certain food-supplement formulations containing at least 98% pure CBD, while stressing substantial remaining data gaps. EFSA also stated that safety could not be established for people under 25, pregnant or breastfeeding women, or people taking medication under the conditions assessed.
See the EFSA 2026 CBD safety statement.
Because safety guidance depends on formulation, population and regulatory context, a concentration guide should not invent a generic “start with X drops” schedule. Follow the product label and seek professional advice when medicines or medical conditions are involved.
What CBD Strength Should You Buy?
There is no universally correct percentage.
The right buying decision depends on what you are comparing: concentration, bottle size, formulation, spectrum, carrier oil, verified product instructions and cost.
If you are simply trying to compare products, use mg/ml first. It is the cleanest way to put oils from different brands and bottle sizes on the same scale.
For more general buying guidance, read our guide to buying CBD oil and gummies in Malta or our CBD in Malta guide.
CBD Oil Strength FAQ
What does 10% CBD oil mean?
On many consumer CBD oil labels, 10% is paired with approximately 100mg CBD per ml, which would equal 1000mg in a 10ml bottle. Verify the manufacturer’s stated total CBD because percentage conventions can vary.
Is 2000mg CBD oil stronger than 1000mg?
Not necessarily. You also need the bottle size. A 2000mg 30ml bottle contains about 66.7mg/ml, while a 1000mg 10ml bottle contains 100mg/ml, so the smaller-total bottle is actually more concentrated.
Is a 30ml CBD oil stronger than a 10ml CBD oil?
Bottle size does not determine strength. If both bottles have the same mg/ml concentration, the 30ml bottle simply contains more total liquid and more total CBD.
How do I calculate CBD strength in mg/ml?
Divide the total amount of CBD in milligrams by the bottle volume in millilitres. For example, 2000mg ÷ 10ml = 200mg/ml.
How many mg of CBD are in one drop?
That depends on the dropper and the oil. Use the manufacturer’s verified mg-per-drop information where available instead of assuming every drop is the same size.
Is higher-strength CBD oil better?
No. Higher strength only means a higher concentration of CBD per ml. Quality and suitability also depend on formulation, ingredients, testing, spectrum and how the product is intended to be used.
Compare CBD Oils in Malta
Browse our current CBD products in Malta. When comparing oils, look at the total CBD, bottle size and mg/ml together rather than relying on the largest number on the label.
