If you're new to vaping or switching from cigarettes, the nicotine strength question is the first wall you'll hit. Walk into any shop or open an online store and you'll see numbers like 3, 6, 12, 20, 35, 50—but what do they mean for you? Here's the short version: those numbers are milligrams of nicotine per milliliter (mg/mL) of e-liquid. The higher the number, the stronger the hit.

But choosing isn't just about picking a number. It's about matching it to your habits, your device, and how your body reacts. This guide walks you through it, step by step.