Which nicotine strength should I go for?

The nicotine strength listed for e-liquid is the number of milligrams of nicotine per millilitre in a bottle. That means a 10ml bottle of 6mg nicotine e-liquid would have 60mg of nicotine (6mg x 10ml).

The new legislation from the TPD restricts e-liquid to a nicotine strength of no more than 20mg/ml. You can read more information about TPD regulations here.

If you smoke regular cigarettes (like a Marlboro Red), there is approximately 1.2mg of nicotine in each cigarette, or 24mg of nicotine per pack (1.2mg x 20 cigarettes).

If you smoke light cigarettes (like a Marlboro Light), there is approximately 0.7mg of nicotine in each cigarette, or 14mg of nicotine per pack (0.7mg x 20 cigarettes).

If you smoke Ultra Light cigarettes (like a Silk Cut), there is approximately 0.5mg of nicotine in each cigarette, or 10mg of nicotine per pack (0.5mg x 20 cigarettes).

As you make the switch to vaping from regular cigarettes, you can consider this a guide to the nicotine strength you should try. Of course, this isn't definitive as other factors, such as VG/PG ratio and your chosen flavour can have an effect on the nicotine hit, so you should always experiment with a few variants. 

10+ regular cigarettes per day = 18 mg nicotine strength

Up to 10 light cigarettes per day = 12 mg nicotine strength

Up to 10 ultra-light cigarettes per day = 6 mg nicotine strength

Very light/occasional smokers = 3 mg nicotine strength

Nicotine free = 0 mg nicotine strength