CBD Dosage Calculator

“I wish I had a CBD oil Dosage Calculator”, is what we hear a lot. We’d simply like to know how many drops we need to take.

Unsurprisingly, not all CBD oil products have the same potency. With the various strengths and package indications, it can become very confusing, even for math talents.

To be consistent, we only indicate the dosage in milligrams. This is a universal unit which is used by all CBD products.

Besides that, the market is flooded with CBD scams and low-quality products, which you can easily avoid by following our up-to-date Fake CBD Checklist.

CBD % to mg


Oil with 5% CBD in a 10 ml bottle: How many milligrams CBD are in 1 milliliter CBD oil?

1 milliliter = 1 gram = 1000 milligrams of CBD oil.

5% of 1000 milligrams = 0,05 times 1000 = 50 mg of CBD.

A 10 ml bottle contains: 10 times 50 = 500 mg CBD.

Number of Drops

How many mg in a drop of CBD oil?

The amount of milligram in a drop CBD oil depends on the CBD product you use. There are all kinds of CBD products available.

To avoid miscalculating your daily CBD dosage, we have created two calculators. If your package or CBD bottle indicates the amount of CBD in milligrams, you only need the iDWeeds Drops Calculator.

But, often, CBD packaging is without a milligram indication and only shows a potency percentage (% CBD). Therefore, you first need to convert to milligrams, using the iDWeeds % to mg Calculator. Besides, you have to calculate the number of drops with the drops calculator.

Factors that influence your CBD dosage

The serving size depends on many factors, such as full-spectrum hemp oil, broad-spectrum, and CBD isolates. Full-spectrum CBD is more likely to give you the desired effect as the Cannabidiol (CBD) is more effective with the other (CBN, CBG, CBC, THC, etc.) naturally present cannabinoids in the hemp plant.

In our Health section we go in-depth per condition by presenting you clear-cut scientific research and anecdotal evidence.

Potential side-effects and body weight should be considered when taking CBD oil. Using CBD with other drugs is not recommended.

The top menu lists almost all medical conditions for which we have studied the CBD interaction. Hence, you can find the recommended serving size for each of these conditions in the relevant articles. If you are treating cancer with cannabis oil, follow the procedures on that page.

Proper CBD dosage

As of yet, the Food and Drug Administration (FDA) has not given any dosage recommendations. It is commonly advised to have a starting point of 20 mg CBD per day. Increase as needed until you get the desired effect. For more details on CBD oil dosage, click here.

right dosage

Can I overdose on CBD?

You can not fatally overdose on CBD. However, there are some potential side effects.

“A lethal cannabis (THC) overdose is impossible because cannabinoid receptors, unlike opioid receptors, are not located in the brainstem areas controlling breathing.” – National Cancer Institute (1)

The quote from above concerns cannabis, particularly the THC cannabinoid. As we know, CBD lacks the unpleasant side effects a THC overdose induces, so it is safe to experiment with the dosage amount, as you cannot fatally overdose on CBD or any cannabinoid. You might experience some minor side effects from a CBD “overdose”, but nothing major.

However, in combination with medications (drugs), you already take, first consult your medical professional before use. Mixing with other drugs is not recommended, especially medicines that influence your blood pressure. CBD, among many things, regulates blood pressure so you don’t want multiple drugs doing the same thing, which can lead to abnormal blood pressure and heart rate.

Health benefits of CBD calculator

People commonly want to know the CBD dosage for pain, while for severe chronic pain, it’s probably best to add some THC in the mix. However, opposite to that, when dosing CBD for anxiety, no THC is needed. The same can be said for the CBD depression dosage as it’s linked with anxiety.

Because everyone is different, you will have to find the proper CBD dose that works for you. It’s much appreciated when you share the treatment and method of CBD usage that works for you in the relevant medical condition articles.

For example, few people know that the CBD gummies’ effects are just the same as with oils and tinctures. They are also convenient to calculate your daily dosage. The gummy packages always indicate how many milligrams of CBD there are per gummy.

Go to this page for an in-depth review of CBD flower.


Use our CBD mg calculator or,

1) Determine how much mg of CBD is appropriate for your health condition. (Indications in our health articles)

2) Calculate the amount of mg per mL in your bottle: Divide the total amount of mg CBD in your bottle by the number of mL in a bottle.

3) Calculate the mg amount per drop: Divide the amount of mg per mL (from point 2) by 20 (the number of drops per mL)

4) Calculate how many drops of CBD you need: divide your desired CBD dosage in mg (from point 1) by the amount of mg per drop (from point 3)

Your weight plays a minor role with CBD dosage. Small children and pets need less. We prefer the rule, generally start low (25mg per day) and increase until you notice results. As everyone reacts to CBD differently for a range of ailments, our health conditions section provides dosage indications per condition.

This depends on 2 things:

1) The strength of your CBD

2) Your daily dosage

Let’s assume your bottle contains 3000 mg of CBD and you take 30 mg daily. Your bottle will last you for 3000/30= 100 days

Yes, but not before keeping the drops under your tongue for at least a minute. The area under your tongue provides better absorption and when you keep the drops in your mouth longer, it may not itch your throat.

Potency is usually indicated on the tincture bottle in mg CBD. If CBD % is indicated on the tincture bottle, use our CBD % to mg calculator to get the CBD potency in milligrams.

You cannot overdose on cannabidiol. Even with massive amounts of CBD people have shown no harmful side effects. You might feel a little drowsy because of the lower blood pressure, and as such its not recommended to mix with other drugs/meds.

Dropper size:

  • 1 oz (30 mL) bottle: 20 drops (1 mL)
  • 2 oz (60 mL) bottle: 30 drops (1.5 mL)

1) Amount of mg per 1 mL dropper: Divide the total amount of mg CBD in your bottle by the number of mL in your bottle.

2) Amount of mg per 1.5 mL dropper: multiply this by 1.5

Full-Spectrum CBD Discount

Be sure to start your CBD treatment with full-spectrum, lab tested, completely organic and high-quality CBD for the best price to avoid disappointment.

Get your FREE series on Unadulterated usage & Massive CBD discounts
Join Now
Get your FREE series on Unadulterated usage & Massive CBD discounts
Join Now