How Much Nicotine Is in a Vape? UK Strengths Explained
"How much nicotine is in a vape?" is one of the most common questions new vapers ask, and the answer depends entirely on the strength you choose. In the UK, nicotine e-liquid is capped at 20mg/ml, and vapes come in everything from 0mg (nicotine free) up to that legal maximum. This guide explains how nicotine strength is measured, how much is in a typical vape, how it compares to cigarettes, and how to pick the right level for you.
How Is Nicotine Strength Measured?
Vape nicotine is measured in milligrams per millilitre (mg/ml), usually shortened to just "mg". So a 10mg e-liquid contains 10 milligrams of nicotine in every millilitre of liquid. You will also see it written as a percentage, and the two are directly linked:
- 10mg/ml = 1%
- 20mg/ml = 2%
To convert, just divide the mg by 10 to get the percentage (or multiply the percentage by 10 to get the mg). They describe exactly the same thing.
In short: nicotine strength is measured in mg/ml. 10mg = 1%, 20mg = 2%.
Vape Nicotine Strengths in the UK
Under UK TPD law, nicotine e-liquid is capped at 20mg/ml (2%), that is the strongest you can legally buy. The common strengths you will see are:
- 0mg, nicotine free (see our nicotine free range)
- 3mg / 6mg, low, common in high-VG shortfills for sub-ohm devices
- 10mg (1%), the comfortable middle ground for most pod-kit vapers
- 20mg (2%), the UK legal maximum, aimed at heavier ex-smokers
Nicotine-containing bottles are also limited to 10ml, and prefilled tanks/pods to 2ml, under the same rules.
How Much Nicotine Is in a Disposable-Style Vape or Pod?
To work out the total nicotine in a device, multiply the strength by the volume. A prefilled pod holding 2ml of 20mg e-liquid contains:
2ml × 20mg = 40mg of nicotine total.
A 10ml bottle of 10mg e-liquid contains 100mg total (10 × 10). Big-puff kits work the same way, they just hold or get topped up with more e-liquid over their life, so the total nicotine you get through them is higher over time, even though the strength stays at or below 20mg.
How Does a Vape Compare to Cigarettes?
This is where people want a straight number, but it is genuinely tricky, because how much nicotine your body actually absorbs is very different from how much is in the product. A cigarette contains roughly 10–12mg of nicotine, but you only absorb around 1–1.5mg of it when you smoke one.
With a vape, absorption depends on the strength, the device, and how you puff. The practical takeaway is not to match milligrams exactly, but to choose a strength that satisfies your cravings without making you feel unwell, and adjust from there. For most people switching from a pack a day, 20mg nic salt is the usual starting point.
Nic Salt vs Freebase, Same mg, Different Feel
Two e-liquids can both be 20mg but feel completely different. Nic salt is smoother and gets nicotine into your system faster, so a 20mg salt is comfortable in a pod kit. The same 20mg in freebase (traditional) e-liquid would be harsh and scratchy, which is why freebase is usually sold at much lower strengths (3–6mg) for bigger sub-ohm devices. Learn more in our nic salts guide.
Which Nicotine Strength Should You Choose?
As a rough guide, based on how much you used to smoke:
- Heavy smoker (a pack a day or more): start at 20mg nic salt.
- Moderate smoker (around 10 a day): 10mg is usually comfortable.
- Light or social smoker: try a lower strength, or even 6mg.
- Not chasing nicotine at all: go 0mg.
If your chosen strength leaves you still craving cigarettes, step up; if it feels too intense, step down. It is normal to fine-tune it in the first week or two. Browse strengths on our nic salt range.
Can You Have Too Much Nicotine?
Yes, vaping at a strength that is too high for you can cause "nic sickness": headache, nausea, dizziness, a racing heart or a scratchy throat. It is unpleasant but usually passes quickly. If you feel any of these, stop vaping, have some water, and switch to a lower strength. The fix is simple: match the strength to your needs rather than reaching for the strongest option by default.
Stepping Your Nicotine Down Over Time
One of vaping's advantages is that you can taper. Many people start at 20mg, settle in, then gradually step down, 20mg to 10mg, then lower, and eventually to 0mg if they want to keep the ritual without the nicotine. There is no rush; drop a level only when your current strength feels like more than you need. For the last stage, a nicotine free vape lets you keep the habit while leaving nicotine behind entirely.
Frequently Asked Questions
How much nicotine is in a vape?
It depends on the strength you choose. UK e-liquid ranges from 0mg (nicotine free) up to the legal maximum of 20mg/ml (2%). To find the total in a device, multiply the strength by the volume, e.g. a 2ml pod at 20mg contains 40mg of nicotine.
What is the strongest legal vape in the UK?
20mg/ml (2%) is the maximum nicotine strength allowed for e-liquid in the UK under TPD law. You cannot legally buy nicotine e-liquid stronger than that.
What does mg mean on a vape?
mg means milligrams of nicotine per millilitre of e-liquid (mg/ml). 10mg equals 1% and 20mg equals 2%, they're two ways of writing the same strength.
How much nicotine is in a vape compared to a cigarette?
It's hard to compare directly because absorption differs. A cigarette contains around 10–12mg of nicotine but you only absorb 1–1.5mg. Rather than matching numbers, choose a vape strength that satisfies your cravings, usually 20mg nic salt for a pack-a-day smoker.
What nicotine strength should a beginner use?
If you smoked heavily, start at 20mg nic salt; around 10 a day, try 10mg; a light smoker, go lower. Adjust up or down in the first week or two based on how satisfied you feel.
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