CBD oil dosage

CBD Oil Dosage: An Ultimate Guide for the Beginners

Learn how to calculate your CBD dose like a pro using your specific gravity. We’ll cover everything you need to know about CBD dosing in this detailed guide. There is a lot of information on CBD oil’s multiple health benefits, but it is less clear on exactly what dosage to take. Our goal is to open up the picture regarding CBD oil dosage, answer the correct dosage, and calculate it for yourself if you want to be as accurate as possible.

We go over some general dosage guidelines, how you can change the dosage from one person to another, and how to calculate your optimal dosage based on the weight and potency of the cannabis oil you purchased.

How to dose CBD oil

CBD oil can seem confusing at first. Everyone reacts differently to CBD, which can change the dosage a lot. We often find two people of the same sex who have practically identical weights and heights but respond very differently to the same CBD dose.

The first might find that a 5ml dose of CBD oil is perfect for reducing pain and inflammation, while the other person finds no relief until 40ml. On the other hand, others may find relief with a dose of a few drops. Of course, it’s tough to answer the question:

How Much CBD Oil Should I Take?

Some general guidelines can help you increase your dosage. However, it is essential to always start below this dosage and work your way up from there. It’s to test how reactive you are with a smaller dose before going up a level.

It is best to start with a lower, ineffective dose and gradually increase to a higher, more effective dose. You don’t want to take too much the first time and experience uncomfortable side effects for the rest of the day.

The general rule of thumb for strength dosing is:

  • Low strength: 1 mg of CBD per 5 kilograms
  • Medium strength: 3 mg of CBD per 5 kilograms
  • High strength: 6 mg of CBD per 5 kilograms

Note that this measurement is for pure CBD, not CBD oil. We will go over the calculation of how much this equates to CBD oil later. For now, here is a table of rounded weights and the resulting doses by weight in pure CBD.

Daily doses of CBD by weight and strength (in mg):

Weight (kg) Low force Medium strength High force
50 kg 10 mg 30 mg 60 mg
60 kg 13 mg 38 mg 75 mg
70 kg 15 mg 45 mg 90 mg
80 kg 17 mg 52 mg 105 mg
90 kg 20 mg 60 mg 120 mg
100 kg 22 mg 67 mg 135 mg
110 kg 25 mg 75 mg 150 mg

Ask yourself, What am I taking CBD for?

This is an important question because it will guide you in the direction of the correct dosage to take.

Recommended force according to condition:

  • General health → low strength
  • Nausea → low to medium strength
  • Chronic pain → medium to high strength
  • Sleep disorders → medium to high strength
  • Anxiety → medium to high strength
  • Epilepsy → high strength or pharmaceutical grade
  • Cancer → high strength or pharmaceutical grade
  • Migraines → low to high strength

CBD Oil Dosage: 4 Steps to Dosing Like a Pro

The easiest way to start dosing is to find where you are in the table above, start dosing lightly, and build up from there. Never start high strength if you’ve never used CBD oil before. If you want to be even more precise with your dosage, follow the five steps below.

Step 1: Determine the potency of your CBD oil dosage.

The first step is to look at the CBD oil you have and determine its potency. Sometimes manufacturers will make this super easy for you and tell you the CBD concentration per ml of oil. However, this is not provided in most cases, and you may need to do some quick calculations yourself.

CBD oil dosage

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It may seem intimidating in the early time, but it’s actually pretty simple. All you need to do is enter the numbers in the formula below.

Here’s what to keep in mind:

  1. Bottle size (in ml)
  2. CBD content in the bottle (300mg, 600mg, 1000mg)

Use this formula to calculate power:


Let’s use an example.

Royal CBD makes a 600mg hemp oil. The size of the bottle is 1 ounce (30 ml).

Let’s put this in our formula:

[600 mg] ÷ [30 ml] = [20 mg / ml].

Our answer: there is 20 mg of CBD in every 1 ml of liquid.

You can compare this to the reference table above to see how many ml you will need to get your desired CBD strength (your dose).

Now that we know this, the next step is to see how much liquid the dropper can hold. This will make dosing much easier later.

Step 2: Measure the volume of the dropper.

The dropper is the part of the bottle that is used the CBD oil dosage.

It usually comes with a squeeze head and a glass tube. It makes it easy to administer exact doses of CBD oil in drops.

Most droppers are designed to hold exactly 1 ml of liquid.

This can vary by manufacturer, so it’s best to measure first whenever you’re using a new product to make sure your dosing is as accurate as possible.

Do this, fill the dropper, as usual, drop it drop by drop, and count the drops as you go.

It would help if you ended up in something around 20 drops.

Keep this number in mind for the next step.

Step 3: Calculate your CBD Oil Dosage.

So now you have to decide on the dose to take.

Here’s the general rule of thumb for dosing based on weight and strength:

Weight measurement Low force Medium strength High force
Imperial (pounds) 1 mg every 10 pounds 3 mg every 10 pounds 6 mg every 10 pounds
Metric (kilograms) 1 mg every 4.5 kg 3 mg every 4.5 kg 6 mg every 4.5 kg

How to calculate your dose with your weight


If you prefer kilograms, the formula changes slightly:


Here is a practical example:

Let’s say you are an average 70-pound person and are looking for a medium strength dose.

You must first divide your weight in kg by 4.5 to see how many sets of 4.5 you have in your weight.

[70] ÷ [4.5] = 15.5

Now multiply 15.5 times the medium strength dosing guideline, which in this case is 3.

[15.5] x [3 mg] = 46.5 mg of CBD

In this case, a good starting dose would be about 46.5 mg of CBD per day.

Step 4: Adjust the dose to your body

This is one of the most critical steps.

Let me tell you why.

As mentioned above, everyone responds to CBD oil differently. This means that you need to evaluate how it affects you individually, rather than taking everyone else’s experiences for granted.

Your friend may find the correct dose at 20mg, while you may require much more or less.

The only way to identify this is to start with the dose calculated above and then modify it from there.

Maybe you took 20mg and found no relief in your symptoms. The logical step is to increase to the next level of strength and retest.

In our example, we opt for medium resistance. Perhaps next time, we will calculate the highest resistance (6 mg for every 4.5 kg);

[15.5] x [6 mg] = 93 mg of CBD

Or maybe you took the 20mg and found excellent relief but felt too exhausted as a result, now is the time to adjust the dose to a slightly lower amount.

This process never ends. You will always re-evaluate how it affects you and change the dosage slightly to suit.

This is because each manufacturer will be slightly different depending on the other cannabinoids, terpenes, and phytochemicals the oil contains.

You may also find that a CBD isolate will require significantly higher CBD doses to function despite the high concentration.

This is due to something called the entourage effect.

This is the idea that a full spectrum of CBD oil has a more substantial effect because the other ingredients in the plant work together to produce the results.

You can find some that have 1,500 mg of CBD oil in a small 15 ml bottle, while others have much less, with only 100 mg of CBD in a 30 ml bottle.

Quick reference table to do some common calculations on CBD dosage:

Bottle size 300 mg 600 mg 1000 mg 1500 mg
15 ml 20 mg / ml 40 mg / ml 66 mg / ml 100 mg / ml
30 ml 10 mg / ml 20 mg / ml 33 mg / ml 50mg / ml
50 ml 6 mg / ml 12 mg / ml 20 mg / ml 30 mg / ml

This helps put everything in context a little easier when deciding your dosage.
For example, if you need a low dose, it doesn’t make much sense to get a very high potency CBD oil as it would be too easy to exceed the dose.
On the other hand, if you need a high dose of CBD oil, you may need to drink half the bottle to get the desired effects when using a less potent extract.

Common CBD oil dosages (assuming dropper provides 20 drops per ml)

Bottle size 300 mg 600 mg 1,000 mg 1,500 mg
15 ml 1 mg / drop 2 mg / drop 3.33 mg / drop 5 mg / drop
30 ml 0.5 mg / drop 1 mg / drop 1.6 mg / drop 2.5 mg / drop
50 ml 0.3 mg / drop 0.6 mg / drop 1 mg / drop 1.5 mg / drop

From this, it is easier to see how the different powers work.

If you’ve previously calculated that the ideal daily dose for you is about 45mg of CBD, you’d better choose a high-dose product, such as 1500mg, in a 15ml or 30ml bottle. You would only need about 10-20 drops.

Instead, if you choose a low dose of CBD oil, which contains only 300mg in a 50ml bottle, you will have to take 160 drops to get the dose you need.

Combining your dosing needs with the product you buy is very helpful for these reasons.

Conclusion and where to buy CBD oil

Although CBD oil affects everyone differently, it helps to know the general rule of thumb for CBD oil dosage so you can find the right starting point.

As always, whenever you try a new supplement for the first time, including CBD oil, you should always start with a much lower dose than you think you need and slowly increase from there.

The purpose of these guidelines is to help you identify the approximate dose you may need. It is meant to put it in perspective for you. With that said, you should never jump straight to the highest dosage without adequately testing it at lower amounts.

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