Torch Lumens Explained: How Bright Do You Need?

Torches & Lumens: Getting Dark

Lumens, beam distance, runtime, IPX ratings: torch spec sheets are full of numbers. Here’s what they actually mean, and how to pick a torch that’s ready when the lights go out.

A good torch is one of those things you don’t think about until you really need it. Whether you’re on a night shift, walking the dog on an unlit lane, checking a fuse box or out on exercise, the moment the light fails or turns out to be too weak is the moment you wish you’d chosen better.

The box will usually shout one big number at you: lumens. It matters, but it’s only part of the picture, and chasing the highest figure can leave you with a torch that’s hard to use. So let’s break it down.

Lumens: How Much Light a Torch Produces

A lumen (lm) is the unit used to measure the total amount of visible light a torch gives out. More lumens means more light overall, in the same way a 100W bulb looks brighter than a 40W one. Under the ANSI FL1 testing standard, most brands quote lumens as measured 30 seconds after switching on, so the figure on the box is a fair like-for-like starting point.

But there’s a catch. Lumens tell you how much light there is, not where it goes. A wide floodlight-style beam spreads its lumens over a big area and can look dimmer than a tightly focused spotlight with the same rating.

How Many Lumens Do You Need?

As a rule of thumb, this is where different levels of brightness earn their keep:

Lumens	What It’s Good For	Typical Use
10–50	Close-up, low-glare light	Reading maps, checking kit, keeping night vision
50–200	Everyday carry	Walking, finding keys, quick jobs around the house
200–500	General outdoor and work use	Patrols, dog walking, camping, tradespeople
500–1,000	Long-range visibility	Searching, security, roadside and field work
1,000+	Maximum power for distance	Search and rescue, wide open spaces

More Isn’t Always Better

A very bright torch in a small space bounces glare back at you and ruins your night vision, and it burns through battery fast. That’s why the best torches offer several modes, so you can drop to a low setting for close work and step up to high only when you need distance.

Beyond Lumens: The Other Numbers That Matter

To really compare torches, read the rest of the spec sheet too. The ANSI FL1 standard defines each of these in the same way for every brand:

• Beam distance (m): How far the beam reaches before it fades to about the brightness of moonlight (0.25 lux). It’s what tells you how far you can actually see.
• Peak beam intensity (candela, cd): The brightness of the hottest spot in the beam. A high candela figure means a tight, long-throw beam, while a low one means a wide, even flood.
• Runtime: How long the torch runs before its output drops to 10% of the starting level. Check it for the mode you’ll actually use, because high mode often lasts a fraction of the time low mode does.
• Water resistance (IPX): IPX4 handles splashes, IPX7 survives being dunked to 1 metre for 30 minutes, and IPX8 goes deeper and longer, as specified by the maker.
• Impact resistance: Tested by dropping the torch onto concrete from a stated height. Look for this if it’ll live in a work bag or on a belt.
• Battery and charging: Standard batteries (AA, AAA, CR123A) are easy to swap in the field, while rechargeable USB-C torches are cheaper to run day to day.
• Modes: Low, high and strobe are common, and some torches add SOS or a red light to protect your night vision.

Torches at TacTree

Our torch range covers everything from pocket lights to duty-grade work torches, from brands including 5.11, Maglite, Streamlight and Pelican. Here’s where we’d start.

For Your Keys or Pocket: 5.11 EDC-K USB

The 5.11 EDC-K USB Torch is a keyring light with 150 lumens and a 31m beam, charged through a covered USB-C port. It has an IP54 dust and water rating, a Cree XP-G3 LED and a 1m drop test, and it’s the one you’ll always have on you.

For Duty and Serious Work: 5.11 Response CX1

The 5.11 Response CX1 Torch puts out 870 lumens on high with a 180m beam, and drops to 40 lumens on low. It runs for 7.5 hours on high and over 32 hours on low, and comes with a USB-C charging cradle, so it’s ready for a full shift.

For Maximum Reach: 5.11 Response XR1T

Need to see a long way? The 5.11 Response XR1T Torch delivers 1,200 lumens, 20,000 candela and a 280m beam on high. It’s IPX8 rated, so it survives submersion to 2 metres for 30 minutes, and it runs on two CR123A batteries (included) or a rechargeable 18650 cell (sold separately).

A Classic That Never Lets You Down: Maglite

A Maglite is a tough, machined aluminium torch that’s been trusted for decades. Browse the Maglite range from the pocket-sized Mini Maglite to the D-cell, or the Maglite LED XL200 with five modes including strobe and SOS.

And for the Glow: Cyalume Lightsticks

No batteries, no switch, no failure. Cyalume lightsticks are a simple way to mark a spot, a person or a route in the dark.

How to Choose Your Torch

Start with what you’ll use it for, then work back to the numbers:

1. Decide how you’ll use it. Everyday carry, duty, outdoors or emergency kit each call for a different balance of size, brightness and runtime.
2. Pick a sensible brightness. For most people, 200 to 500 lumens is plenty. Go higher only if you need real distance.
3. Check beam distance and runtime together. A torch that’s brilliant for 90 minutes and dead after that may not suit a long shift.
4. Choose your power. Swappable batteries are handy in the field, while rechargeable torches save money if you use them daily.
5. Match the toughness to the job. For wet or dirty work, look for a high IPX rating, and for rough use, check the drop test.

Looking After Your Torch

• Keep batteries out of torches you won’t use for months, so they can’t leak.
• Wipe threads and O-rings clean, and add a little silicone grease now and then to keep the seals waterproof.
• Recharge lithium cells before they run flat, and keep spares to hand.
• Test your torch regularly. A light you’ve checked is a light you can trust.

Be Ready When It Gets Dark

The right torch is the one that does what you need, reliably, every time. Browse our full torch range, or get in touch and our in-house experts will help you find the right light for the job.