Best value THC vape UK
1G vs 2G THC Vape UK: Which Should You Buy? 2G is a better value for regular users, roughly twice the oil for 25–50% more money. 1G is better for new users or when trying a new strain for the first time. The puff count doubles, the cost per puff nearly halves, and the experience is identical. The only reason to choose 1G is unfamiliarity with the product.
What is the difference between 1G and 2G?
The number refers to the amount of THC oil in the device. 1G = 1,000mg of extract. 2G = 2,000mg of extract. Both come in the same disposable all-in-one format — the device is slightly larger on 2G models to accommodate the additional oil and battery capacity.
| Feature | 1G THC vape | 2G THC vape |
|---|---|---|
| Oil quantity | 1,000mg | 2,000mg |
| Typical puff count | 200–400 puffs | 600–1,200 puffs |
| Typical price | £20–£35 | £35–£45 |
| Cost per puff | ~8–15p | ~4–7p |
| Device size | Compact | Slightly larger |
| Session duration | 1–2 weeks typical | 3–6 weeks typical |
| Best for | New users, new strains | Regular users |
Is 2G a better value than 1G?
Almost always yes. The price difference between 1G and 2G from the same brand is typically £10–£20, while the oil quantity doubles. That means the cost per milligram of extract is significantly lower with 2G.
Take Fryd Vape UK as an example. The 2G device is £35. If the 1G equivalent were £20, you would pay £40 to get the same 2,000mg of extract across two 1G devices, £5 more for the same amount of oil, with the added inconvenience of buying twice. The 2G format wins on value every time for regular users.
When should you choose 1G?
There are two situations where 1G makes more sense than 2G:
1. You are a first-time buyer
If you have never used a THC vape before, starting with a 1G device lets you assess your tolerance and preferences without committing to a large quantity. Start with our budget THC vapes UK page for beginner-friendly options from £18.
2. You are trying a new strain or brand for the first time
Even experienced users benefit from testing a 1G device first when trying a brand or strain they have not used before. Different strain profiles and extract types feel significantly different; committing to 2G of a product you do not enjoy is wasteful. Try 1G first, then buy 2G of your favourites.
Which brands offer the best 2G options?
| Brand | Format | THC % | Price | Why choose it |
|---|---|---|---|---|
| Besos Vape UK | 2G liquid diamonds | 88%+ | £45 | Best batch consistency in our range |
| Packman Vapes UK | 2G liquid diamonds + live resin | 94%+ | £45 | Most recognised UK brand |
| Fryd Vape UK | 2G live resin + liquid diamonds | 95% | £35 | Best value — 11 flavours |
| Whole Melts Vape UK | 2G dual-chamber | 85–99% | £45 | Two strain profiles in one device |
| Backpack Boyz UK | 2G with 3-heat settings | 75–95% | £45 | Best heat control |
For a full ranked comparison of every 2G option in the CaliVape range, see our dedicated best 2G THC vapes UK guide.
Does the extract type change between 1G and 2G?
No, within the same brand and product line, the extract type and THC percentage are identical between 1G and 2G formats. A liquid diamond 2G device uses the same extract as the 1G version, just twice the quantity. The experience per puff is identical.
What about 3.5G devices? Are they worth it?
3.5G devices are available in the CaliVape range for users with very high tolerance or heavy daily use. They offer the same per-puff cost advantage as 2G compared to 1G, roughly 35–50% cheaper per milligram than a comparable 1G device. The main trade-off is device size. 3.5G devices are noticeably larger and less pocket-friendly.
Frequently asked questions
Is 2G twice as strong as 1G?
No, the strength per puff is identical. 2G simply contains twice the oil, giving you more total puffs at the same THC percentage per draw.
How many puffs does a 2G vape give?
Approximately 600–1,200 puffs with controlled use. See our full guide on how long a THC vape lasts for the full breakdown by draw length and frequency.
What is the cheapest 2G THC vape in the UK?
Fryd Vape UK at £35 is currently the best value 2G premium vape available at CaliVape, 95% THC, 11 flavours, and live resin oil quality at the lowest 2G price point in our range.
Should a beginner start with 1G or 2G?
1G for first-time users. Start with a lower-potency product in the 70–80% THC range, take one short draw and wait 5–10 minutes. Once you know your tolerance, move to 2G for a better value. See our cheap THC vapes UK page for beginner options from £18.
Are 2G vapes allowed on planes?
THC vapes of any size are not permitted on commercial flights in the UK. They are also illegal to possess in most countries. This question is outside the scope of this guide.
