What’s the Difference Between 1.3G and 1.4G Fireworks?

If you’ve ever picked up a box of fireworks and stared blankly at “1.3G” or “1.4G” on the label, wondering whether you’ve accidentally signed up for a chemistry degree, you’re not alone. These codes aren’t random. They tell you how much explosive power is inside and how the firework is classified for safety and storage.

You may think that the bigger the number the more powerful the firework but that's not the case. In plain English:

• 1.3G fireworks are the heavyweight hitters — big bursts, big bangs, more responsibility.

• 1.4G fireworks are the more polite cousins — impressive but less intense, and much more suited to back garden displays.

The main difference lies in the amount of explosive content. 1.3G fireworks can contain up to five times more punch than 1.4G, which is why they’re often used in larger displays. But before we get to the fun stuff, it helps to know how these classifications came about.

A Quick Bit of Background

Before 2017, fireworks in the UK were classed under British Standards. You had garden fireworks with a 5m safety distance and display fireworks with a 25m safety distance, and both could be either 1.3G or 1.4G.

Then the CE standards came in, which are used across Europe and changed how fireworks are categorised. Today, they’re grouped into F1 to F4:

• F1 covers indoor fireworks like ice fountains.

• F2 is for garden fireworks with 8–15m safety distances.

• F3 is for consumer display fireworks with 25m safety distances.

• F4 is for professional use only.

The 1.3G and 1.4G labels sit on top of these categories and indicate how hazardous a firework is and how much explosive content it contains. If you’re wondering why some old favourites like aerial shells and bangers disappeared, it’s down to modern safety legislation.

The Real Difference Between 1.3G and 1.4G Fireworks

When you strip away the jargon, the difference is simple. 1.3G fireworks are more powerful. They go higher, explode wider, and tend to be louder. 1.4G fireworks are designed for ease of use, smaller spaces, and a less intense experience.

The label on the firework tells you everything you need to know:

• A 1.3G firework starts with “DANGER” on the CLP label.

• A 1.4G firework starts with “WARNING”.

If it looks like it means business, it probably does.

NEC, NEM and Other Numbers That Actually Matter

You’ll often see NEC (Net Explosive Content) on the packaging. This tells you exactly how much explosive material is in the firework. A 1.3G barrage with 1kg of NEC is going to put on a different show to a 1.4G fountain with 100g.

And it’s not just about cakes. Rockets show the difference clearly: 1.3G rockets soar high and burst like something out of a blockbuster film. 1.4G rockets tend to be smaller and more modest — more “neighbourhood show” than “festival finale.”

How It Plays Out in a Display

When you light 1.3G fireworks, you know about it. They launch higher, crack louder and fill the sky with wider bursts. If you’re planning a big Bonfire Night, New Year's Eve, Wedding or birthday display with space to spare, 1.3G gives you that proper “wow” factor.

1.4G fireworks, on the other hand, are brilliant for smaller gatherings. They can still be spectacular, just without shaking your neighbour’s windows. They’re easy to handle, easier to store, and still deliver all the sparkle you’d expect.

Choosing the Right Fireworks for Your Event

The choice between 1.3G and 1.4G depends on your space, your confidence level, and the atmosphere you want. A wide-open field and a big crowd? Go 1.3G. A family-friendly Halloween party in the garden? 1.4G is your friend.

Three practical tips that make all the difference:

• Check the safety distance printed on the box and actually stick to it.

• Plan your firing order ahead of time so you’re not faffing in the dark.

• Keep a bucket of water or sand nearby — just in case.

A Few of Our Favourite 1.3G and 1.4G Fireworks

To bring all this theory to life, here are some our the top fireworks from our range that show what 1.3G and 1.4G can do. 

War Of The Wizards 49 Shot (1.4G)

Packed with effects: palms, strobes, waves, brocades, and a cracking finale. The variety in this cake makes it a great all-rounder for garden displays of any size.

Buy War Of The Wizards today

Flying Fish 20 Shot (1.4G)

This little gem produces one of the most unique effects in the business. Silver shots burst, then dart off in multiple directions, creating a fluid, fish-like movement in the sky. 

Buy Flying Fish today

Moving Target 105 Shot (1.4G)

Moving Target is a firm team favourite, firing 7 shots at a time in a sweeping fan. Multi-level effects include red, green, and crackling comet tails, bright blue stars, and glittering shimmers that sweep back and forth. Compact in size but stunning in performance.

Buy Moving Target today

Sky Hunters (1.3G)

Highly regarded as the pound-for-pound kings of rockets. Each pack includes five large 1.3G rockets with sensational, colourful effects.

Buy Sky Hunters rocket pack today

Howling Wolves 30 Shot (1.3G)

Infamous for its piercing howls, this massive calibre cake delivers loud screaming shots followed by palms and crackles. Fire two together for overlapping howls and an unforgettable sound-and-vision experience.

Buy Howling Wolves today

Dreadnought 296 Shot (1.3G)

One of the finest compound barrages available in the UK. Nearly two minutes of colour, noise, and variety: fan firing, V firing, W firing, strobes, peonies, brocades, ghost effects, dragon eggs, and more. It’s a rollercoaster of a firework — just light once and enjoy the ride.

Buy Dreadnought today

Storing 1.3G vs 1.4G Fireworks

Storage rules are another big difference. 1.3G fireworks require more secure storage — ideally in an outbuilding or a proper storage box. 1.4G fireworks are less fussy but should still be kept somewhere dry, cool and away from anything flammable.

Original packaging is best, and no, the airing cupboard isn’t a sensible option. If you’re buying larger quantities, make sure you’re sticking to the storage limits set by your local regulations.

FAQs

What does 1.3G mean?

It’s a classification showing higher explosive content and hazard level. In short, more bang.

Are 1.3G fireworks louder than 1.4G?

Yes, usually much louder with wider bursts and higher lifts.

Can anyone buy 1.3G fireworks?

Yes, from reputable specialist suppliers, but they come with stricter storage and handling rules.

Can I keep 1.3G fireworks at home?

Yes, but in limited quantities and with proper storage away from living spaces.

Which is better for Bonfire Night?

Neither is “better” — it depends on your space and what kind of show you want.

Create Your Own Epic Fireworks Display

Whether you’re planning a small garden gathering or a full-on street party, understanding the difference between 1.3G and 1.4G fireworks means you can choose the right kind of magic for your night.

Here at Epic Fireworks, we stock both — from gentle fountains to full-throttle barrages. Our DIY firework display packs make it easy to create a pro-level show without the faff, and our 1.3G products pack a punch far beyond anything you’ll find at the supermarket.

So pick your poison, wrap up warm, and get ready to set the sky alight.

Shop our full range of fireworks today