Nicotine Strengths Explained: How to Pick the Right mg

Picking a nicotine strength can feel like guesswork, especially with shelves full of numbers that all seem to mean something slightly different. The right mg depends on how much nicotine you're used to, the device you're using and the format you've chosen. This guide breaks down what those numbers actually represent so you can make a confident, informed choice.

What the numbers on the bottle mean

For e-liquids sold in the UK, nicotine strength is measured in milligrams per millilitre (mg/ml), sometimes shown as a percentage. By law, UK e-liquids are capped at 20mg/ml, which equals 2%. You will never find a compliant bottle stronger than that, so any product claiming a higher figure is not legal for sale here.

The most common strengths you'll come across are:

• 3mg and 6mg — lower strengths, usually freebase shortfills. Smoother on the throat and suited to people who vape larger amounts of liquid through bigger devices.
• 10mg — a middle-ground nic salt strength, often a comfortable starting point for pod kits.
• 20mg — the maximum, almost always a nic salt. Delivers a quicker, more satisfying hit and tends to suit heavier ex-smokers using small pod kits.

It's worth remembering that mg/ml describes the concentration in the liquid, not how much nicotine actually reaches you. How much you absorb also depends on your device, your airflow and how you vape, which is why the same bottle can feel very different in two different kits.

Nic salt vs freebase: why it changes the right mg

The type of nicotine matters as much as the number. Nic salt is formulated to feel smoother at high strengths and to deliver nicotine faster, which is why 10mg and 20mg salts are popular in compact mouth-to-lung (MTL) pod kits. You get a higher strength without the harsh throat hit you'd otherwise expect.

Freebase nicotine behaves differently. At high strengths it becomes harsh and uncomfortable, so high-mg freebase is uncommon for that reason. Freebase tends to suit lower strengths such as 3mg and 6mg, paired with bigger sub-ohm (direct-to-lung, or DTL) devices that produce more vapour. Those devices push far more liquid, so a lower concentration still adds up over a session.

In short: small, low-power pod kits generally pair with higher-strength nic salts, while bigger, airier sub-ohm setups pair with lower-strength freebase. You can browse both types across our e-liquids range.

Choosing a strength for vaping

There's no single correct number, but a few patterns help most people land in the right area. Treat the following as a rough guide rather than a prescription, because your device and habits matter just as much as your background.

• Lighter smokers or lower dependence: often start around 3-6mg in a bigger, higher-airflow device, or roughly 10mg salt in a small pod kit.
• Heavier smokers or higher dependence: often suit 20mg salt in an MTL pod kit, where the strength and the device work together for a faster hit.

The single biggest variable people overlook is the device itself. More airflow and more power deliver more nicotine per puff, so a powerful sub-ohm device calls for a lower mg, while a tight, low-power pod kit calls for a higher one. If you move from a pod kit to a bigger device but keep the same strength, you may find it suddenly feels like too much.

A quick way to think about it

Match the strength to the device first, then to your habit. A tight draw and low wattage point towards higher-strength salts; an airy draw and big clouds point towards lower-strength freebase. Once the format fits the device, fine-tune the number from there.

Choosing a strength for nicotine pouches

Pouches play by completely different rules, and this trips a lot of people up. Pouch strengths are usually labelled as mg per pouch, not mg/ml, so the numbers are not directly comparable to e-liquid strengths. A 6mg pouch and a 6mg e-liquid are not the same experience at all.

As a general orientation within the pouch format:

• Lighter pouches often sit around 4mg per pouch.
• Stronger pouches commonly reach 12mg+, and some brands go considerably higher.

Because the absorption route and labelling differ, the sensible approach is to compare within a format, not across formats. Judge a pouch against other pouches, and an e-liquid against other e-liquids. If you're new to pouches, starting lower and working up is the easier path than starting strong and backing off. Explore the options on our nicotine pouches page.

Adjusting once you've started

Your first choice is rarely your final one, and that's normal. Your body gives fairly clear signals when a strength isn't right, so it pays to pay attention in the first few days.

Signs your strength may be too high:

• Headaches
• Nausea
• Dizziness
• Hiccups

If you notice these, step down to a lower strength. On the other hand, if you find yourself chain-vaping or feeling a constant craving that never quite settles, your strength may be too low and stepping up could help. Adjust gradually rather than jumping several steps at once, and give each change a few days before deciding.

Frequently asked questions

Is a higher mg always better value?

Not necessarily. A higher strength than you need can feel harsh and may cause the symptoms listed above, while too low a strength can leave you vaping constantly. The best value comes from matching the strength to your habit and device, not simply buying the strongest available.

Can I compare e-liquid mg to pouch mg?

No. E-liquid strength is measured in mg per millilitre and pouch strength is usually mg per pouch, with different absorption routes. They aren't interchangeable, so always compare like with like and judge each format on its own terms.

Why is 20mg the strongest e-liquid I can buy?

UK regulations cap e-liquid nicotine at 20mg/ml (2%). Any compliant product sold here will fall at or below that limit, which is why you won't find legal e-liquids labelled higher.

I switched to a bigger device and now it feels too strong. Why?

Bigger, sub-ohm devices use more power and airflow, delivering more nicotine per puff. If you kept the same mg when upgrading, dropping to a lower strength usually brings things back into balance. You can find suitable lower-strength options across our store.

PinkVape sells to over-18s only. Nicotine is an addictive substance. This article is general information, not health or medical advice.

Frequently asked questions

What nicotine strength should I start with when I switch from smoking?

Most ex-smokers on a small pod kit do well starting at 10mg or 20mg nic salt, with heavier smokers usually suiting 20mg. Lighter smokers using a bigger, airier device often settle around 3-6mg freebase. Match the strength to your device first, then fine-tune based on how often you reach for it.

What is the maximum nicotine strength allowed in UK e-liquids?

UK law caps e-liquid nicotine at 20mg/ml, which is the same as 2%. Any compliant bottle sold here will be at or below that limit, so any product claiming a higher figure is not legal for sale in the UK.

What is the difference between nic salt and freebase nicotine?

Nic salt feels smoother at higher strengths and delivers nicotine faster, which is why 10mg and 20mg salts suit compact pod kits. Freebase becomes harsh at high strengths, so it tends to be used at 3-6mg in bigger sub-ohm devices that push more vapour per puff.

Can I compare e-liquid mg to nicotine pouch mg?

No, the two numbers are not directly comparable. E-liquid is measured in mg per millilitre while pouches are usually labelled mg per pouch, and the absorption routes are different. Always compare pouches with other pouches and e-liquids with other e-liquids.

Why does my vape feel too strong after switching to a bigger device?

Bigger sub-ohm devices use more power and airflow, so they deliver more nicotine per puff at the same mg. If you kept the same strength when upgrading, dropping to a lower mg usually brings things back into balance. A tight pod kit and an airy sub-ohm setup rarely suit the same number.

How do I know if my nicotine strength is too high?

Common signs your strength is too high include headaches, nausea, dizziness or hiccups, especially in the first few days. If you notice any of these, step down to a lower mg and give the change a few days before deciding. Adjust gradually rather than jumping several steps at once.

What strength are nicotine pouches and which should I choose?

Lighter nicotine pouches typically sit around 4mg per pouch, while stronger ones commonly reach 12mg or more, with some brands going higher. If you're new to pouches, starting lower and working up is easier than starting strong and backing off. Judge each pouch against other pouches rather than against e-liquids.