Best Digital Stick Thermometers UK 2026: The £10 Braun Reads in 8 Seconds, the £8 Dreambaby Takes 30

COMPARISON · SAFE AND SOUND

The first time your baby feels hot at 2am is the moment you find out which thermometer you actually own. Plenty of parents buy an ear or forehead model because it looks clever, then discover that UK guidance for young children points to something far simpler: a basic digital stick thermometer, tucked under the armpit. It is the cheapest type on the shelf and, for babies, the one health professionals tend to reach for first.

That makes stick thermometers an odd thing to shop for. Every one in this roundup costs between £8 and £20, every one beeps when it is done, and every one will give you a usable number. The differences are the ones you only notice while holding a hot, unhappy baby: how many seconds you need to keep their arm clamped to their side, whether the screen makes sense with the lights off, whether the thermometer tells you what the number means, and whether it can safely be used for a rectal reading if a professional ever asks you for one.

We compared the four stick thermometers in our catalogue from four different brands, using published specs, current UK prices and the feedback parents share with us about each one. Two things surprised us. The £20 option is the one we would buy last. And the real gap between the £10 Braun and the £8 Dreambaby is not the price, it is roughly 22 seconds of keeping a baby still.

Lil' Bubba's verdicts

• Best Overall: Braun PRT2000 Digital Stick Thermometer · 8.5/10 - 8-second reading, an age-adjusted colour display and a flexible tip for all three sites, for about £10
• Best for Underarm-Only Checks: Tommee Tippee 2-in-1 Thermometer · 8.0/10 - just as quick, with a fever beep and last-reading memory, and stocked almost everywhere
• Best for Rectal Readings: Frida Baby 3-in-1 True Temp Thermometer · 7.0/10 - a built-in stopper and a night light, but some parents report readings on the low side
• Best Spare for the Changing Bag: Dreambaby Clinical Digital Thermometer · 7.0/10 - under £8 with a fever alert, but expect around 30 seconds per oral reading and longer under the arm

Quick comparison

Thermometer	Price	Reading time	Where you can use it	Extras	Rating
Braun PRT2000 Digital Stick Thermometer	£10	As fast as 8 sec	Underarm, mouth, rectal	Age Precision colour display, memory, cap
Tommee Tippee 2-in-1 Thermometer	£11.25	About 8 sec	Underarm, mouth	Fever beep, last-reading memory, °C/°F
Frida Baby 3-in-1 True Temp Thermometer	£19.99	About 10 sec + auto re-check	Underarm, mouth, rectal	Rectal stopper, LED light, case
Dreambaby Clinical Digital Thermometer	£7.77	About 30 sec (mouth), longer underarm	Underarm, mouth, rectal	Fever beep from 37.6°C

How we picked the 4

We started with every contact thermometer in our catalogue that is in stock at a UK retailer we work with, then kept only true digital sticks: the type that touches the skin and reads body temperature directly, as opposed to ear or no-touch infrared models. Each had to be suitable from birth for at least underarm use, and we allowed one product per brand so the comparison stays honest.

We dropped a digital thermometer from a big feeding brand that turned out to be a bath and room thermometer, not a body thermometer, and a second Braun listing that uses the same Age Precision design as the PRT2000 at a higher price. For the four that remained we checked the published specs, current prices and the feedback parents regularly share with us, then scored each one on speed, ease of reading, versatility and value.

What to look for in a digital stick thermometer

Reading time. This matters more than anything on the box. A stick thermometer only works if the tip stays in place until it beeps, and a baby's arm has to be held gently against their side the whole time. Eight seconds is easy. Thirty seconds, with a grizzly baby who wants to wave their arms about, is a lot harder, and underarm readings usually take longer than the oral time printed on the pack.

Where you can use it. For babies and young children, UK guidance is to take the temperature under the armpit with a digital thermometer. Under-the-tongue readings are for older children who can hold the thermometer still with their mouth closed. Rectal readings are rarely asked of UK parents, but a flexible tip makes any site more comfortable.

Context for the number. A plain reading of 37.9°C means little at 2am if you are not sure what is normal. Displays that change colour, or a fever beep, give you that context at a glance. Remember that underarm readings typically run a little lower than readings taken in the mouth.

Memory and night use. A last-reading memory lets you compare against the previous check without writing it down. A light or colour cue helps in a dark nursery.

When to get help. No thermometer replaces advice. UK health guidance says a temperature of 38°C or higher in a baby under 3 months, or 39°C or higher in a baby aged 3 to 6 months, needs urgent medical advice, and you should always trust your instincts if your baby seems unwell whatever the number says.

1. Braun PRT2000 Digital Stick Thermometer / 10 · Best Overall

The PRT2000 is Braun's plain stick thermometer, but it borrows the Age Precision idea from the brand's pricier ear models. You choose an age group, take the reading, and the display shows a colour that tells you whether that temperature is normal, raised or high for a child of that age. At 2am, that bit of context is worth more than any other feature.

It reads in as little as 8 seconds, works under the arm, in the mouth or rectally thanks to a soft flexible tip, remembers your last reading and comes with a storage cap. At around £10 it costs barely more than the cheapest stick here, and it is the one we would put in the medicine cabinet first.

What parents love

• Fast enough for a wriggler. As fast as 8 seconds, so you are not pinning an arm down for long. One parent told us: 'Eight seconds under the arm is the difference between a reading and a wrestling match.'
• The number comes with a meaning. The age-adjusted colour display flags a raised or high reading without you having to remember the thresholds.
• One thermometer, three sites. The flexible tip makes it comfortable under the arm, in the mouth or rectally, so it works for the whole family.
• Big-brand accuracy, small price. Clinically validated and around £10, cheaper than most of the infrared models parents buy instead.

What to know before you buy

• Check twice if it looks odd. Like all underarm sticks, readings can vary a few tenths of a degree. A parent shared: 'It was about 0.2 lower than the surgery's reading, so now we always take two.'
• Single-reading memory. It only stores the last result, so jot readings down if you are tracking a fever overnight.
• Small digits. The colour cue helps in the dark, but the numbers themselves are small.

Best for

• First-time parents who want to know what the number actually means
• Families who want one thermometer for baby and adults
• Anyone who wants the fastest underarm reading for under £15
• Parents who may be asked to take a rectal reading

2. Tommee Tippee 2-in-1 Thermometer / 10 · Best for Underarm-Only Checks

The Tommee Tippee 2-in-1 is the stick you will find in most high street chemists and supermarkets, and it matches the Braun for speed with an eight-second reading. The 2-in-1 name tells you its limits: it is designed for under the arm or under the tongue, not for rectal use.

A fever indication beep sounds when the temperature is high, the last reading is stored so you can compare checks, and you can switch between Celsius and Fahrenheit. Online it sits around £11, though it is often closer to £15 on the high street.

What parents love

• Just as quick. An eight-second reading puts it level with the Braun, which makes underarm checks on a baby genuinely manageable.
• Fever beep. The alert means you know a reading is high even before you have looked at the screen properly.
• Last-reading memory. We hear repeatedly from parents that this is the feature they use most. One parent put it best: 'I check, it remembers, and an hour later I can see straight away if it has gone up.'
• Easy to replace. Stocked so widely that you can pick up a spare on the way home if one goes missing.

What to know before you buy

• Not for rectal use. Fine for almost every UK parent, but not the one to buy if you have been advised to take rectal readings.
• A number, not a verdict. There is no age-adjusted colour guide, so you need to know your thresholds.
• Wait between readings. The instructions ask for a few minutes between measurements to keep readings accurate.

Best for

• Parents who only ever take underarm readings
• Anyone who likes to compare against the previous check
• A second thermometer for grandparents or the nursery
• Households already using other Tommee Tippee kit

3. Frida Baby 3-in-1 True Temp Thermometer / 10 · Best for Rectal Readings

Frida Baby built the 3-in-1 True Temp around one specific worry: taking a rectal reading on a tiny baby. A stopper on the stem physically prevents over-insertion, and LED lights help when you are doing it in a dark room. It gives a quick read in around 10 seconds, then automatically runs a second check so you are not left second-guessing.

It works orally and under the arm too, and comes with a carrying case. At £19.99 it is double the price of the Braun, and that is where our enthusiasm cools.

What parents love

• Confidence for rectal checks. The stopper means you cannot push it in too far. A parent shared: 'It was the only way I felt brave enough to do it on a newborn.'
• Night-friendly. The built-in light means you are not fumbling for the main light switch during a feverish night.
• Automatic second check. It double-checks itself, which saves you doing it manually.
• Tidy storage. The case keeps it clean in a changing bag.

What to know before you buy

• Some readings run low. A number of parents tell us it reads lower than their other thermometer. If a reading does not match how your baby seems, check with a second thermometer.
• The priciest stick here. At around £20 it costs twice as much as the Braun, which also works at all three sites.
• The full check takes longer. The quick read is fast, but waiting for the second check adds time with a squirming baby.

Best for

• Parents who have been advised to take rectal readings
• Night-time checks in a dark nursery
• Parents who want a case for the changing bag
• Fans of other Frida Baby kit

4. Dreambaby Clinical Digital Thermometer / 10 · Best Spare for the Changing Bag

Dreambaby, a family-safety brand based in Scotland, makes the cheapest stick in this roundup at under £8. It does the essentials: a digital reading, and a rapid fever alert beep when the temperature hits 37.6°C or above.

The trade-off is time. The oral reading takes around 30 seconds, and underarm and rectal readings can take longer. That is fine for an older child who will sit still, and much harder with a baby. We see it as a brilliant spare rather than your main thermometer.

What parents love

• Cheapest in the test. Under £8 means you can keep one in the changing bag and one at home without thinking twice.
• Clear fever alert. A rapid beep flags anything from 37.6°C upwards.
• Built to last. Parents we hear from regularly say theirs has survived years of being thrown in a bag. One parent told us: 'It's been in the nappy bag since our first, and it's still going.'

What to know before you buy

• Slow under the arm. Around 30 seconds orally and longer under the arm is a long time to keep a baby still.
• No context. There is no colour guide and no age adjustment, just the number and the beep.
• Basic display. Fine in daylight, harder to read in a dark nursery.

Best for

• A spare for the changing bag or car
• Grandparents and childminders
• Older children who can keep it under the tongue
• Tight budgets

What about ear and forehead thermometers?

Infrared ear and no-touch forehead thermometers are faster still, often reading in a second or two, and they are great once your child is older or when you do not want to wake a sleeping toddler. But they cost two to five times as much, technique matters more, and ear models are not always recommended for very young babies. For a newborn, a good stick thermometer under the arm is the simpler, cheaper and more widely recommended starting point, and many families end up owning one of each.

How to choose

Braun PRT2000 Digital Stick Thermometer: Buy this if you only want one thermometer. It is quick, works at every site, and the colour display tells you what the reading means when you are too tired to remember.

Tommee Tippee 2-in-1 Thermometer: Buy this if you only ever check under the arm and want a memory to compare readings. It is as quick as the Braun and easy to find in any chemist.

Frida Baby 3-in-1 True Temp Thermometer: Buy this only if you have been advised to take rectal readings and want the reassurance of a stopper. Otherwise the Braun does more for half the price.

Dreambaby Clinical Digital Thermometer: Buy this as a spare. At under £8 it is a sensible back-up for the changing bag or grandparents' house, but its slower reading makes it a harder main thermometer for a baby.

Add it to your Nest

A thermometer is one of those things nobody thinks to buy until the night they need it. Add your pick to your free BubsNest registry so it is ready before your baby arrives, alongside the rest of your medicine cabinet basics.