What Nicotine Strength E-Liquid Should You Choose? (2026)
Choosing the right nicotine strength is the single most important decision when you start vaping. Get it right and switching from cigarettes feels natural. Get it wrong and you will either feel unsatisfied and reach for a cigarette, or feel dizzy and put the vape down. This guide walks you through exactly how to match your smoking history to the correct nicotine level, explains the difference between nic salts and freebase nicotine, and shows you how to step down your strength over time.
Nicotine strength is measured in milligrams per millilitre (mg/ml). This tells you how much nicotine is in each millilitre of e-liquid. In the UK, the legal maximum is 20mg/ml under TPD regulations. You may also see nicotine expressed as a percentage on some packaging. The conversion is simple: 2% equals 20mg/ml, 1% equals 10mg/ml, and so on.
Which nicotine strength matches your smoking habit?
Your daily cigarette intake is the best starting point for choosing a nicotine strength. On average, a cigarette contains around 10 to 12mg of nicotine in the tobacco, but your lungs only absorb about 1 to 1.5mg per cigarette due to losses during combustion. Vaping delivers nicotine differently, so these recommendations are based on what most vapers find satisfying rather than a direct chemical conversion.
| Smoking habit | Recommended nic salt strength | Recommended freebase strength |
|---|---|---|
| Heavy smoker (20+ cigarettes per day) | 20mg nic salt | 18mg freebase |
| Moderate smoker (10-20 cigarettes per day) | 10mg to 20mg nic salt | 12mg to 18mg freebase |
| Light smoker (5-10 cigarettes per day) | 5mg to 10mg nic salt | 6mg to 12mg freebase |
| Social or occasional smoker (fewer than 5 per day) | 5mg nic salt | 3mg to 6mg freebase |
| Non-smoker / nicotine-free vaper | 0mg | 0mg |
If you are unsure where you fall, it is better to start slightly higher than you think you need. Starting too low is the most common reason new vapers go back to cigarettes. You can always step down once your cravings are under control.
Nic salts vs freebase nicotine
There are two types of nicotine used in e-liquid: nicotine salts (nic salts) and freebase nicotine. They deliver nicotine differently and feel noticeably different when vaped, even at the same mg level. Understanding this difference is essential for choosing the right strength.
| Feature | Nicotine salts | Freebase nicotine |
|---|---|---|
| Throat hit | Smooth, even at high strengths like 20mg | Gets harsher as strength increases. Uncomfortable for most vapers above 12mg. |
| Absorption speed | Fast. Reaches the bloodstream in around 6 to 8 minutes, similar to a cigarette. | Slower. Takes longer to satisfy cravings. |
| Available strengths (UK) | 5mg, 10mg, 20mg | 0mg, 3mg, 6mg, 12mg, 18mg |
| Best device type | Low-power MTL pod kits like the OXVA Nexlim or Vaporesso XROS 4 Mini | Higher-power sub-ohm kits and advanced pod kits |
| Best for | Beginners, ex-smokers, anyone switching from disposables | Experienced vapers, cloud chasers, vapers stepping down nicotine |
For most people starting out, we recommend nicotine salt e-liquid in an MTL pod kit. The combination of smooth throat hit and fast nicotine delivery gives you the best chance of staying off cigarettes. You can read our full guide to nic salts for a deeper explanation of how they work.
How your device affects nicotine strength
The same nicotine strength can feel completely different depending on the device you use. This is because different devices produce different amounts of vapour per puff, which changes how much nicotine you inhale.
A low-power mouth-to-lung (MTL) pod kit produces small, discreet clouds. Because each puff contains less vapour, you need a higher nicotine concentration (10mg to 20mg nic salt) to get enough nicotine per draw. This is why nic salts are paired with pod kits.
A high-power direct-to-lung (DTL) sub-ohm device produces large, dense clouds. Each puff delivers a much larger volume of vapour, so the nicotine concentration needs to be lower (3mg to 6mg freebase). Using 20mg vape liquid in a sub-ohm kit would deliver far too much nicotine per puff and would make you feel dizzy and nauseous almost immediately.
| Device type | Nicotine type | Strength range |
|---|---|---|
| MTL pod kit (e.g. OXVA Nexlim) | Nic salt | 5mg, 10mg, or 20mg |
| MTL pod kit (with freebase 50/50) | Freebase nicotine | 6mg, 12mg, or 18mg |
| Sub-ohm / DTL kit | Freebase nicotine (shortfill + nic shot) | 3mg or 6mg |
If you are unsure which device suits your vaping style, our beginner's guide to vape kits covers the different types in detail.
Signs your nicotine strength is wrong
Your body will tell you if the nicotine level is not right. Here is what to look out for.
Signs your nicotine is too high
- Dizziness or lightheadedness after a few puffs
- Feeling nauseous
- Headaches
- A harsh or scratchy throat hit that feels uncomfortable
If you experience any of these, drop down one strength level. For example, move from 20mg to 10mg nic salt, or from 12mg to 6mg freebase.
Signs your nicotine is too low
- Constantly vaping without feeling satisfied
- Still craving cigarettes even after vaping
- Reaching for your vape far more often than you used to reach for a cigarette
- Feeling irritable or restless between sessions
If your cravings are not being met, move up one strength level. If you are already on freebase and finding it too weak, consider switching to nic salt vape liquid at 10mg or 20mg. The faster absorption often makes a noticeable difference.
Stepping down your nicotine over time
Many vapers choose to gradually reduce their nicotine strength once they are comfortably off cigarettes. There is no pressure to do this, but if it is your goal, here is a typical step-down path.
| Stage | Nicotine type and strength | Notes |
|---|---|---|
| Starting point | 20mg nic salt | For heavy and moderate smokers. Use with an MTL pod kit. |
| Step 1 | 10mg nic salt | Drop to 10mg once cravings are manageable. Give it at least a month before moving down. |
| Step 2 | 5mg nic salt | A gentle nicotine level. Many vapers stay here long-term. |
| Step 3 | 6mg or 3mg freebase | Switch to freebase vape juice if you want to continue reducing. Works in both pod kits and sub-ohm devices. |
| Step 4 | 0mg (nicotine-free) | Available as shortfill e-liquid or 0mg nic salt. Maintains the habit without any nicotine. |
Everyone steps down at their own pace. Some vapers reduce within a few months, others stay at the same strength for a year or more. The priority is staying off cigarettes. If cravings return after dropping a level, move back up for another month before trying again. Rushing the process is the most common reason vapers relapse to smoking.
What are shortfills and nic shots?
Shortfill e-liquids are large bottles of nicotine-free vape juice, typically 50ml or 100ml, that come with space in the bottle to add a nicotine shot. A nic shot is a small, flavourless bottle of concentrated nicotine that you pour into the shortfill to bring it to your desired strength. For example, adding one 18mg nic shot to a 50ml shortfill gives you 60ml of approximately 3mg e-liquid.
Shortfills are popular with sub-ohm vapers because they offer better value than buying multiple 10ml bottles, and they are available in a huge range of flavours. Brands like Drip, Doozy Seriously Slushy, and Wild Roots all produce popular shortfill vape juice for DTL vaping. Browse our full range of shortfill vape juice to explore your options.
Percentage to mg conversion
Some e-liquid labels show nicotine as a percentage rather than mg/ml, which can be confusing. Here is a quick reference.
| Percentage | mg/ml equivalent |
|---|---|
| 0.3% | 3mg |
| 0.6% | 6mg |
| 1.0% | 10mg |
| 1.2% | 12mg |
| 1.8% | 18mg |
| 2.0% | 20mg (UK legal maximum) |
Recommended e-liquids by strength
Nic salt e-liquids (for MTL pod kits)
These are available in 5mg, 10mg, and 20mg and work best with low-power pod kits like the OXVA Nexlim and Vaporesso XROS 4 Mini.
- Elux Legend Blueberry Sour Raspberry — a tangy, fruity nic salt with a sour finish. Available in 10mg and 20mg.
- Bar Juice 5000 Cherry Cola — a fizzy cola vape liquid with a sweet cherry twist. A popular bar salt flavour.
- ELFLIQ Watermelon — the bottled version of the classic Elf Bar watermelon flavour. Smooth and refreshing.
Browse our full nic salt e-liquid collection for hundreds more flavours.
Shortfill vape juice (for sub-ohm kits)
These are nicotine-free and designed to be used with nic shots to create your preferred strength, typically 3mg or 6mg. They work best with higher-power DTL devices.
- Drip Blue Raspberry 100ml — a sweet and tangy blue raspberry with a candy edge.
- Doozy Seriously Slushy Mixed Berries 100ml — a frozen berry blend with a slushy finish.
- Wild Roots Gold Dust Peach 50ml — a smooth, natural peach with a subtle warmth.
Explore our full vape juice collection for the complete shortfill range.
Frequently asked questions
What nicotine strength should a beginner use?
If you are switching from smoking, start with 20mg nic salt e-liquid in an MTL pod kit. This gives you the closest experience to a cigarette and the best chance of managing cravings. If you were a light smoker, 10mg may be enough. For non-smokers, 0mg is the appropriate choice.
What is the difference between nic salts and freebase nicotine?
Nic salts absorb into the bloodstream faster and feel smoother at higher strengths, making them ideal for beginners and ex-smokers. Freebase nicotine has a harsher throat hit at higher strengths but is available in a wider range of mg levels and works well in sub-ohm devices at lower concentrations.
Is 20mg nicotine a lot?
20mg is the highest legal nicotine strength in the UK. It is designed for heavy smokers using low-power MTL pod kits where each puff contains a small amount of vapour. In this context, 20mg delivers a satisfying hit without being excessive. You should never use 20mg e-liquid in a high-power sub-ohm device.
What does mg/ml mean on e-liquid?
mg/ml stands for milligrams per millilitre. It tells you how much nicotine is in each millilitre of e-liquid. A 10ml bottle of 20mg/ml vape juice contains a total of 200mg of nicotine across the whole bottle. This is the standard measurement used on UK e-liquid labels.
Can I mix nicotine strengths?
Not with pre-mixed 10ml e-liquids, as they are sealed. However, shortfill e-liquids are designed for exactly this purpose. You buy a nicotine-free shortfill and add a nic shot to create your desired strength. This is how most sub-ohm vapers customise their nicotine level.
How do I convert nicotine percentage to mg?
Multiply the percentage by 10. So 2% equals 20mg/ml, 1% equals 10mg/ml, and 0.3% equals 3mg/ml. The UK legal maximum is 2% or 20mg/ml.
What nicotine strength do disposable vapes use?
Most disposable vapes in the UK used 20mg nic salt e-liquid, which is the legal maximum. If you are switching from disposables to a refillable kit, 20mg nic salt is the natural starting point to replicate the same experience.
How long should I wait before stepping down my nicotine strength?
There is no fixed timeline, but most vapers benefit from staying at their starting strength for at least one to two months before attempting to reduce. The priority is staying off cigarettes. Only step down when you feel genuinely comfortable and your cravings are well managed.