The optimal dose of CBD depends on your weight and the potency of the oil you’re using. Learn how to find the perfect dose with our CBD dosage calculator CBD Oil Strength: How to Choose the Right One for You You’re ready to buy CBD oil, but there are a dozen different potencies available. 300 mg? 600 mg? 4000 mg!? Which one should you choose?
CBD Dosage Calculator: How Much CBD Should I Take?
The optimal dose of CBD depends on your weight and the potency of the oil you’re using.
Learn how to find the perfect dose using our CBD dosage calculator.
Everybody’s been talking about CBD oil and its long list of health benefits. You’ve shopped around and found a high-quality CBD oil to start yourself off with and you’re ready to get started.
How much do I take? Can I take too much?
In this article, we’re going to talk about dosing CBD oil. We’ll cover how dosing can vary depending on factors like weight, age, the condition you’re treating, the potency of the oil you’re using, and more.
You’ll learn how to find the best dose for your body, and what to do if you experience side effects.
To make dosing as easy as possible, you can also use our CBD oil dosage calculator — which estimates your optimal dose based on your weight, desired strength, and potency of the CBD oil you’re using.
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Updated on January 24, 2022
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What’s the Normal Dose of CBD?
The most common dose of CBD is 20 – 40 mg per dose. Some people take much less (as low as 1 mg), others take much higher (up to 100 mg).
Depending on the strength of the product you’re using, this could be anywhere from a few drops to several milliliters of oil. It could also involve anywhere from 1 – 5 capsules or gummies per dose.
The truth is that the optimal dose of CBD is different for everybody.
It’s common for two people with identical weights to respond very differently to the same dose of CBD. One person may find the ideal dose for them is 30 mg of CBD, while the other person responds better to just 10 mg.
The ideal dose of CBD for you depends on a variety of factors, including:
- Your size and weight
- The severity of the condition you’re treating
- Your tolerance to CBD
- Your individual body chemistry
- The potency of the CBD oil, capsules, gummies, or other CBD products you’re using
The best way to find the right dose for your body is to start with a very low dose (2 mg, for example) and increase by 2-5 mg per dose until you find what works best for you.
CBD Dosage For Anxiety
The effective dose of CBD oil for anxiety or chronic stress usually falls on the moderate to heavy range of the spectrum.
However, some people with anxiety disorders find they’re especially sensitive to CBD may only need a small dose.
When using CBD oil to manage anxiety levels, it’s best to start with a mild dose first to see how you respond. If you don’t see any improvement, move up to the moderate dosage next. Most people notice improvement with the moderate or heavy dosage according to their weight.
For best results, take CBD oil first thing in the morning, and repeat around lunchtime. Many people will take a mild “booster dose” about 30 to 60 minutes before engaging in activities that trigger their anxiety.
CBD Dosage For Pain
The dose of CBD oil for pain can vary significantly. For mild pain, such as low-grade arthritis, mild PMS pain, or low back pain — a mild or moderate dose of CBD oil will usually do the trick.
For more severe pain, nerve pain, or treatment-resistant multiple sclerosis or cancer pain — you’ll likely need to use a heavy dose of CBD oil.
Some people experience the painkilling benefits of CBD oil immediately, others need to take the oil for a few days or weeks before noticing any improvement.
The time it takes to notice improvement depends on the underlying condition that’s causing the pain.
Inflammatory pain, cancer pain, or pain from endometriosis can take a long time — while arthritis pain, digestive pain, muscle pain, and PMS pain usually improve within a few hours of taking CBD oil.
For arthritis or joint pain, you can get faster effects by using a CBD pain cream alongside your CBD oil.
CBD Dosage For Sleep
CBD oil has been shown to improve both the quality and duration of sleep — but studies have shown the effective dose of CBD oil for sleep is higher than other conditions. Aim for a heavy dose of CBD oil if the goal is to improve your sleep.
Low doses of CBD (less than 10 mg) can have a stimulating effect, while higher doses (20 mg or higher) are generally much more sedative. The more CBD oil you use, the stronger the sedative effect.
Certain types of CBD extracts also tend to have a stronger impact on sleep. For example, CBD oils that contain sleep-supportive terpenes such as linalool, bisabolol, lavandin, or myrcene have the strongest sedative action.
You can also find CBD oils that contain melatonin to make the oil even better for promoting sleep.
CBD Dosage For Depression
CBD oil is useful for managing symptoms of many mood disorders — including depression.
Finding the right dose of CBD oil for depression can take some trial and error. The underlying processes that cause depression don’t happen overnight, and they won’t disappear overnight either. It can take several weeks or months of steady CBD oil supplementation — along with other lifestyle modifications — before you can expect any real improvement.
It’s best to start with a mild or moderate dosage of CBD oil for a few weeks before graduating to the heavy dose once you understand how CBD affects your body individually.
Calculating the Dose of CBD Based on Your Weight (How This Calculator Works)
While the dose of CBD is unique for everybody, there is a general rule of thumb that can be used to determine an estimated dose based on your weight and the strength of effects you’re looking for (low, medium, and high strength).
Our dosage calculator is based on the calculations listed below. These doses are estimates and should not be used to replace professional medical advice regarding dosage.
I recommend you start with the low-strength dose when using CBD for the first time and increase the dose slowly over time. When you find a dose that works, you’ve found the right dose for your body.
If you experience side effects, you’ve found your upper limit. Reduce the dose to the last amount that didn’t produce side effects.
Calculating the Dose of CBD By Weight & Strength:
- Low strength → 1 mg CBD per 10 pounds (2 mg per 10 kg)
- Medium strength → 3 mg CBD per 10 pounds (7 mg per 10 kg)
- High strength → 6 mg CBD per 10 pounds (13 mg per 10 kg)
It’s important to note that this measurement is in pure CBD, not CBD oil.
We’ll go over calculating how much CBD oil this dose works out to later on. Once you know how much CBD you should be using, you can find the equivalent amount of CBD oil depending on the potency of the oil you’re using.
CBD Dosage Chart by Weight & Strength (in mg)
The optimal dose of CBD depends on the combination of your weight and desired dosage.
A smaller, 90 lb woman is going to need a much smaller dose than a large 250 lb football player — for example. And someone looking for mild relief from stress or anxiety isn’t going to need a high dose like someone looking to treat persistent pain.
You can use this CBD dosage chart to visualize how the dose of CBD changes according to your body weight and desired strength of effects.
CBD Oil Strength: How to Choose the Right One for You
You’re ready to buy CBD oil, but there are a dozen different potencies available. 300 mg? 600 mg? 4000 mg!? Which one should you choose? Buying CBD oil shouldn’t be so confusing. With this guide, we’ll show you exactly what makes these potencies different, and give you the information you need to become an expert. We go over:
- What the most common potencies/strengths are
- Differentiate between low, medium, and high strength oils
- How to determine the actual strength of your CBD oil
- And how you can apply this to choosing the best potency for what you need it for.
We then get into the more advanced techniques of calculating the optimal CBD concentration for your weight and size.
The Problem With Buying CBD
When browsing different brands, you’ll come across a lot of different strengths (potencies). You’ll find ranges from 300 mg to 4000mg per bottle. With so many CBD options to choose from it can make you feel like you have no idea what you’re even looking at. The labels are confusing and oftentimes, don’t make any sense at all.
The good news is that you’re not alone. The web is full of people asking similar questions. What’s the best potency for MS, fibromyalgia, pain, anxiety… the list goes on.
There are so many factors involved with CBD potency it’s no wonder people are so confused. The condition you’re treating, the concentration of CBD, whether or not other cannabinoids and terpenes are also present, and how severe your symptoms are will all play a role in choosing how effective it’s going to be.
Regardless of your final choice, keep in mind that CBD is not an FDA-approved drug in the United States and as such, this article should not be taken as a clinical claim or a medical recommendation. If you feel uncertain about picking the right strength of CBD oil and measuring the optimal dosage, consult your physician before the purchase. Let’s get into it.
Common Strengths/Potencies of CBD Oil
First of all, let’s clear something up. CBD potency specifically refers to how strong it is. If a CBD extract is rated at 300mg, it’s going to be about half as strong (potent) as the same amount of a CBD extract rated at 600mg CBD.
But wait, there’s more. These potencies also rely on the actual size of the bottle! The total CBD listed in mg refers to the dose contained IN THE ENTIRE BOTTLE. If you have a smaller bottle, the potency will increase.
So 300 mg in a 15 mL bottle will be twice as potent as a 300 mg oil in a 30 mL bottle. Confused? We’ll clear this up in more detail later. Keep reading, you’ll be an expert by the time we get to the end.
Why Are There different CBD Potencies?
As we said, there are many different potencies, but most of the time, you’ll come across two or three main options to choose from.
Needless to say, if you need CBD for regular supplementation or use it to deal with mild conditions, you won’t need CBD oil in high amounts.
A stronger oil might even be overkill.
As of right now, the majority of CBD companies sell oil tinctures in three different potencies:
Each of these potencies can come in a 15, 30, 50, or 60mL bottle. These are by far the most common, but there are also more potent 2000 mg and 4000 mg CBD options available too.
Getting Started With CBD Oils
It’s recommended that new users start with a low potency CBD oil. Of course, everybody’s chemistry is different, and what will work for one person might very well fail to deliver the desired effects for another not work for another.
The main thing to remember is to start slow and observe your body’s reaction to CBD. This way, you’ll be able to see how much of the oil it actually takes to provide the relief you’re looking for. For example, you can start with a 1-3 mg dose, and increase it to a 3, 4, or 5 mg dose later if these aren’t working.
If you’re not sure what we mean with these doses, keep reading, we’ll get to that later.
How To Calculate The Strength Of CBD Oil
The most important thing to remember when you buy CBD oil is to keep in mind that the bottle size matters.
What does this mean? Well, let’s say we have a 600 mg CBD oil in a 15 mL bottle, and another 600 mg CBD oil in a 30 mL bottle, which one is stronger?
The trick is to remember that the total CBD is distributed equally into the entire contents of the bottle, so the larger bottle will be roughly half as potent as the smaller bottle.
Here’s how it works.
There’s a simple calculation you can make to determine the strength of CBD oil.
It goes like this:
[AMOUNT OF CBD IN MG] ÷ [BOTTLE SIZE IN ML] = STRENGTH IN MG/ML
- Anything below 5 mg/mL (10%) is considered low strength.
- Anything between 15 and 30 mg/mL (15-30%) is medium strength.
- Anything between 30 and 60 (30-60%) is high strength.
- Anything else (60+%) is considered ultra-high-strength or classified as a concentrate.
Wondering how much CBD is in a serving of 300 mg (30 mL bottle)?
Let’s use this as an example. If you have a bottle with 30 mL of oil and advertises 300 mg of CBD, we can simply fill out the formula:[300 mg CBD] ÷ [30 mL Oil] = 10 mg/mL. This is like saying that 10% of the oil is pure CBD. It’s a 10% extract.
This means that every mL of oil you take will deliver exactly 10 mg worth of CBD. Here’s a simple equation:1 serving = 15 drops of oil = a 7.5 mg dose of CBDFor lots of people, though, even as little as 5-7 drops (about 3.5mg of Cannabidiol) can bring relief.
Let’s get into the concepts behind small (300mg), medium (600 mg), and large (1000mg) dose CBD products.
Low Potency CBD Oil (10% or Less CBD)
Most of the low potency CBD oil comes as 300mg in a 30mL bottle, which is a 10% potency. For a large number of people, this 300mg oil will be strong enough to support the endocannabinoid system and offer benefits to conditions like:
- Mild-to-moderate anxiety 
- Body aches and pains 
- Mild headaches
- Periodic insomnia
- Mild to moderate stress
If you’re in the group of users who are particularly sensitive to CBD and other cannabinoids, you won’t require a strong oil to get the expected effects. The low-potency options are a good solution for people thinking of adding CBD oil to their supplementation plan. A single daily dose of CBD can boost immune health, improve homeostasis (balance), and shield you from a range of nervous and endocrine conditions.
Medium Potency CBD Oil (15-30% CBD)
This potency is a good option for those who are looking to elevate their intake of CBD further. Many people taking this dose found little or no benefit from the smaller dose. Typically, people use this dose for symptoms like:
- Mild to moderate pain
- Chronic inflammation
- Digestive issues
- Mild to moderate anxiety
- Mild to moderate headaches
If you notice that you need to take large and/or multiple doses of the 300 mg (30 mL) version to get results, it’s time to upgrade to something stronger.
High Potency CBD Oil (30-60% CBD)
High-potency CBD oil isn’t for everyone. This is a therapeutic grade potency, used mainly for treating specific medical conditions. Conditions that often require high potency CBD oil Include:
- Moderate to severe pain
- Chronic inflammation
- Moderate to severe anxiety
- Severe insomnia
- Frequent migraine headaches
- Multiple sclerosis
If you notice that you need to take large and/or multiple doses of the medium-strength CBD oils, it’s time to upgrade.
Ultra-High Potency CBD Oil (>60%)
2000 mg of CBD in 30mL of oil will yield 66% CBD per mL. These products are thick and syrupy due to the high CBD concentration. They’re also referred to as concentrates because in order to make their manufacturers need to be extracted, and concentrated by removing other elements first. If you’re a first-time user, don’t start with high potency CBD oil.
Its effects are powerful and can have pharmaceutical-like effects in some people. They’re mostly used for serious medical conditions rather than for mild or even moderate levels of discomfort. It’s uncommon to find this potency in a bottle like the other options because it’s simply too thick. Instead, you can expect to find ultra-high potency products in a syringe application.
Unless your symptoms are serious, you likely won’t have to think about using this ultra-high-potency oil. Stick to the low or medium potency range instead.
Choosing Your CBD Dosage: Pro Tips
It’s time we elaborated on a few simple tricks to help you calculate your dosage and choose the right strength of your CBD oil. Let’s explore this in more detail.
1. Calculating Your Dosage Based On Your Body Mass
It’s the evergreen rule for measuring the doses of most substances. People with less body mass need less CBD to experience its benefits, while larger people will require higher amounts of Cannabidiol to produce the same results. Makes sense right?
A good rule of thumb is to take between 1 and 6 mg of CBD for every 10 pounds of body weight. So this would convert to:
- 1mg/10lbs for low severity
- 3mg/10lbs for medium severity
- 6mg/10lbs for high severity
The calculation would be:
[BODYWEIGHT IN POUNDS] ÷ 10 x [DOSE ACCORDING TO SEVERITY] = DOSE IN MG
The low end is for fewer symptoms, the higher range is for more severe symptoms. Here’s a chart to help illustrate this:
a dose of 15 mg – 25 mg would be best for an individual who weighs 150 lbs, while a 200lb user will require somewhere between 20 mg and 33 mg to get started. The table below will help you estimate the dose and potency of your CBD oil: As mentioned, these are only general figures, and more likely than not, you will have to go through some trial-and-error before you reach the sweet spot.
2. Start Low And Work Your Way Up Gradually
Let’s say you have a friend who weighs no more than 150 lbs and takes 50mg of CBD twice daily, which gets him/her satisfying results. Then, he looks at you and says: “hey, we’re approximately the same weight, take the same amount of CBD for yourself – it will work.”Well, not necessarily.
Like we mentioned, we all have different biochemistry. We also all have different patterns of medication use, supplements, and other substances, each of with could interact differently with your CBD . Even if you know the approximate dosage based on your body mass, you’ll need to experiment to see how your body reacts to different concentrations of Cannabidiol. From here we can adjust the dose accordingly until you know exactly how it’s working.
3. Consult Your Doctor
As much as we love to guide people on different aspects of CBD, we’re not in a position to give you medical advice. The best way to know whether you need a low, medium, or high potency CBD oil is to make an appointment with an experienced physician who knows CBD and can provide you with a professional CBD dosage guideline for your case.
How To Dose CBD? (Product Guideline)
You don’t have to be an industry expert to notice that CBD oil is not the only way to consume Cannabidiol. With that being said, you’re probably wondering how to measure your CBD dosage if you’re taking capsules or vaping flowers/concentrates/e-liquids.Here’s what you need to know about dosing CBD with the most common products:
Measuring CBD Tincture Dosage
CBD tinctures are by far the most popular way of consuming CBD. It’s also pretty simple; all you have to do is fill the dropper, place a few drops beneath the tongue, then hold it there for up to 90 seconds, and swallow.
But the question is: how much CBD is actually in a dropper?
Typically, a dropper has enough space to hold 1 ml of liquid. For most droppers, this will be about 40 individual drops. If you know the volume of your CBD tincture, you can use an easy formula to figure out how much CBD is in the dropper:
[TOTAL CBD CONTENT/BOTTLE] ÷ [BOTTLE’S VOLUME (IN MILILITERS)] = MGS OF CBD IN A DROPPER
The first step is to do our calculation from above to determine how much CBD there is in mg/mL.
Here’s a reminder of the formula in case you forgot.
[AMOUNT OF CBD IN MG] ÷ [BOTTLE SIZE IN ML] = STRENGTH IN MG/ML
For example, let’s say you’ve just bought a 30ml CBD tincture that has 300 mg of CBD. [300 mg] ÷ [30 mL] = 10 mg/mL
If a dropper holds 1mL of liquid, you can see that you’re getting 10mg of CBD with every full dropper (around 40 drops).
So, if you need to take 5 mg of CBD, and a single dropper of that 300 mg tincture holds 10 mg, simply fill the dropper halfway; simple, right? (Since we know a mL is about 40 drops, we can also just count out 20 drops).
Here’s another example: Let’s say you have 600 mg CBD oil, in a 15 mL bottle. Let’s first find out the amount of mg/mL:[600 mg] ÷ [15 mL] = 40 mg/mL.
Great! Now let’s say we wanted a dose of 80 mg. We need to take 2 dropperfuls to get that dose since one full dropper will have 40 mg of CBD. Done! Although this is not a surefire method, it is still better than shooting blinds.
Measuring CBD Vape Dosage
CBD can be vaped in two ways: either with a CBD e-liquid or by using a CBD cartridge system. Both methods are pretty straightforward and enjoyable.
Just like with a tincture, using an e-liquid to vape CBD boils down to estimating how much CBD a dropper can hold. Once you figure this out, you know how much CBD you are loading into your device.
Most people vape their daily CBD dose throughout the day, so if you suddenly run out of CBD in your cartridge, it’s a sign that you should puff the vapor in slower intervals. A single tank can contain approximately 33.33 mg of CBD if you are using a 1000 mg bottle.
Thus, the tank should last you for the entire day, leaving some CBD for the next session until you have to refill your device. When vaping CBD, regular monitoring is of the essence. This way, you will be able to control your CBD intake more accurately.
Measuring CBD Capsules Dosage
Now, if you’re wondering if there is a 100% accurate method to take CBD, the answer is a loud YES; these are CBD capsules. Comparing capsule to oil, encapsulated CBD contains a fixed dose of the compound, they allow you to dose it precisely.
Let’s say your CBD dosage is 50 mg. In order to meet these numbers, simply buy a bottle of 25 mg capsules and take one piece twice daily; you will be good to go. Besides, what could be easier than swallowing a flavorless CBD capsule with water?
A Final Hit On CBD Strength And Potency
With the abundance of CBD-infused products and different strengths/potencies available on the market, choosing the right option for your situation can become challenging at the best of times. There’s a lot of information about dosing CBD out there, but without breaking this down into its smaller parts, you’re going to remain confused and frustrated forever.
We hope our guide on CBD potency will help you make the right decision when buying and measuring your CBD dosage. By practicing the calculations listed in this guide you can quickly become a wiz at dosing different strengths of CBD for yourself. If you have any questions regarding the dosage and available potencies, feel free to leave a comment below.
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- Reiman A., Welty M., and Perry Solomon. Cannabis as a Substitute for Opioid-Based Pain Medication: Patient Self-Report. Cannabis and Cannabinoid Research, Vol. 2, No. 1. Published Online in 1 Jun 2017.
- Rong C, Carmona NE, Lee YL, Ragguett RM, Pan Z, Rosenblat JD, Subramaniapillai M, Shekotikhina M, Almatham F, Alageel A, Mansur R, Ho RC, McIntyre RS. Drug-drug interactions as a result of co-administering Δ(9)-THC and CBD with other psychotropic agents. Expert Opin Drug Saf. 2018 Jan;17(1):51-54.
Nina created CFAH.org following the birth of her second child. She was a science and math teacher for 6 years prior to becoming a parent — teaching in schools in White Plains, New York and later in Paterson, New Jersey.