Walk into any CBD section — online or in a store — and you'll see numbers plastered on every label: 500mg, 1,000mg, 2,000mg, 3,000mg, 8,000mg. Bigger numbers feel stronger. That's the intent.
But the total milligrams on the label don't tell you what you actually need to know. What matters is the concentration — how many milligrams of CBD per milliliter of product. And that depends on the size of the container.
The Math Most People Skip
Here's the formula: Concentration = Total CBD (mg) ÷ Container size (ml)
Product A: 3,000mg CBD in a 30ml jar = 100 mg/ml
Product B: 3,000mg CBD in a 100ml jar = 30 mg/ml
Product C: 1,000mg CBD in a 10ml stick = 100 mg/ml
Products A and C have the same concentration despite wildly different total milligrams. Product B has the same total milligrams as Product A but is one-third as concentrated. If you're comparing by the big number on the front of the label, you're comparing the wrong thing.
This matters because when you apply a topical, you use roughly the same amount of product each time — maybe a dime-sized amount for a knee, a quarter-sized amount for a shoulder. The concentration determines how much CBD is in that application. A higher-concentration product delivers more CBD per application.
What Concentration Do You Need?
It depends on what you're using it for.
Under 25 mg/ml — this is the range of most CBD-infused skincare and general-purpose lotions. Fine for daily moisturizing with a CBD component. Not concentrated enough for targeted muscle recovery.
25–50 mg/ml — moderate concentration. Suitable for mild soreness and general use. Many mass-market CBD balms fall in this range.
50–100 mg/ml — the serious recovery range. This is where most products designed for athletes and post-training application sit. You're getting a meaningful dose per application without using excessive product.
100+ mg/ml — high concentration. Products in this range are designed for targeted, intensive application. A 100 mg/ml balm means every gram you apply contains 100mg of CBD.
Metric Recovery Balm is 3,000mg in a 30ml jar — that's 100 mg/ml, putting it at the top of the topical concentration range. That's a deliberate choice: athletes applying to sore muscles need a concentrated formula, not a diluted one.
The Price-Per-Mg Trap
Another number worth calculating: Price per milligram of CBD = Product price ÷ Total CBD (mg)
Product A: $65 for 3,000mg = $0.022/mg
Product D: $45 for 500mg = $0.090/mg
Product E: $89 for 8,000mg = $0.011/mg
Product E looks like the best deal by price-per-mg. But consider: if it's 8,000mg in a 120ml jar, the concentration is only 67 mg/ml. And you need to verify that the label claim matches reality through a third-party COA. Some brands inflate their milligram claims.
Price-per-mg is useful for comparing products at similar concentrations. But a cheaper, less concentrated product isn't a better value if you need to use three times as much of it per application.
How to Compare CBD Balms Accurately
When you're evaluating two products side by side, check four numbers:
1. Concentration (mg/ml) — divide total CBD by container size. This is the most important comparison number.
2. Spectrum type — full spectrum, broad spectrum, or isolate. Full spectrum provides the most complete cannabinoid profile.
3. Price per mg — at similar concentrations, this tells you which product is the better value.
4. COA verification — does the lab-tested CBD content match the label? A product claiming 3,000mg that tests at 2,200mg is effectively less concentrated than the label suggests. Learn how to read a COA →
Why Brands Use Total Milligrams Instead of Concentration
Because bigger numbers sell better. A label that says "3,000mg" feels more impressive than one that says "100 mg/ml" — even though they describe the same product. It's marketing, not deception, but it does make comparison shopping harder.
Some brands are starting to list concentration per ml alongside total milligrams. That's a sign of a brand that wants you to understand what you're buying.
The Bottom Line
Next time you're comparing CBD balms, ignore the big number on the front. Flip to the back, find the total milligrams and the container size, and do the division. The product with the highest concentration per ml at a reasonable price — backed by a verifiable COA — is the one that's going to deliver the most CBD per application.
That's what actually matters when you're rubbing a balm into sore muscles after training. Not the marketing number. The math.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.