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KITCHENMUH Electric Jar Opener Review: A Real Help for Weak Hands, on Glass Jars Only

The KITCHENMUH Jar Opener is best for people with rheumatoid arthritis. Rated 4.0 out of 5 across 9,143 user ratings. The main drawback: durability is the aspect buyers rate worst. We scored it 3.8 out of 5.

By Whimsical Pris, Kitchen Editor Published December 30, 2025 Updated September 26, 2026
3.8Our score
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Product gallery, 14 images
$21.74$28.99 25% off Check price on Amazon

Prices shown were correct on September 26, 2026 and change frequently.

TL;DRThe Short Answer: Is the KITCHENMUH Jar Opener Worth It?

A stuck jar lid is a small thing until your hands can no longer shift it. For glass jars, this KITCHENMUH opener takes the whole job over: you set it on the lid, press one button, and its jaws grip lid and jar and twist, and owners with arthritis and weak wrists say it has given them their independence back. The catch lies in what it will not grip, and in durability, which buyers rate as its weak spot. Worth buying for anyone whose jars are mostly glass.

NoFussDeal rates the KITCHENMUH Jar Opener 3.8 out of 5 at $21.74. Last updated September 26, 2026.

Key Facts

Item Dimensions W x H
2.83"W x 4.33"H
Wattage
3 watts
Material
ļ¼ƒšŸ­ Best Seller
Color
White
Brand
KITCHENMUH
Size
7.28*4.33*2.75inches

What Stands Out

  1. One button starts the whole cycle: inner jaws catch the lid, outer jaws catch the jar, and the motor twists it open
  2. KITCHENMUH says it opens lids from 30 mm to 88 mm, and its jaws adjust to the size by themselves
  3. Made for screw-top glass jars only, not plastic, irregular or tapered jars, and not cans
  4. Compact at 7.28 by 4.33 by 2.75 inches, small enough for a kitchen drawer

Strengths and Drawbacks

What works

  • Opens glass jar lids with a single button press, with no grip or wrist twist needed
  • Owners with arthritis and hand injuries say it gives them back their independence in the kitchen
  • Jaws adjust to lid size by themselves, and KITCHENMUH gives a range of 30 mm to 88 mm
  • Handles jars straight from the fridge, one owner reports, and KITCHENMUH advises wiping them dry first
  • No limit on jar height, since it sits on top of the jar
  • Battery powered with no cord, and small enough for a kitchen drawer
  • Nothing sharp, and your hands never go underneath it

What does not

  • Designed for screw-top glass jars only, and owners find plastic jars hit and miss
  • Durability is the aspect buyers rate worst, and some units wear out
  • Can jam, which calls for KITCHENMUH's battery swap and reset routine
  • Needs a hand resting on top to stop it tilting, so it is not entirely hands off

Features in Depth

01

One Button, No Grip, No Twist

Operation Mode Automatic Controls One button Ease of Use (owner view) Positive

The KC12 is fully automatic, so the only thing your hand does is press a button. KITCHENMUH lays out the sequence: stand the jar on a flat surface, place the opener on top and press the button, and the inner jaws close on the lid while the outer jaws close on the jar body. The motor then turns the lid. When it has finished turning, press the button again to release the jar, check the lid has come free and lift the opener away. That is why it helps people with arthritis, carpal tunnel, frozen shoulder and similar conditions: it asks for no grip strength and no wrist rotation. KITCHENMUH does ask you to rest a hand on top while it works, to keep it level and stop it tilting, so it is hands free in the sense of no gripping rather than no touching. One owner found this confusing at first because they expected to hold it, and then realised it does the work by itself. Buyers consistently rate it easy to use one-handed and say it works reliably.

$21.74 3.8/5 Check price
02

Self-Adjusting Jaws: Glass Jars Yes, Plastic No

Lid Range (KITCHENMUH) 30 mm to 88 mm Jar Type Screw-top glass Compatibility (owner view) Mixed

You never set a size. KITCHENMUH says the jaws adapt by themselves to most common jars, with a lid range of 30 mm to 88 mm, and because the opener sits on top of the jar there is no limit on how tall the jar can be. One owner reports little jars, big jars and jars straight from the fridge all opening, and another mentions bottled drinks as well. The limit is material and shape. KITCHENMUH designs it for screw-top glass jars only and says it is not suitable for plastic, irregular or tapered jars or for cans. Owners bear that out: more than one reports it works well on glass but not on some plastic jars, with mayonnaise named as an example. The reason is simple enough: the outer jaws need a firm, rigid jar body to hold against, and a plastic jar flexes. Buyers rate compatibility as mixed for that reason, so look at what is in your cupboard before you buy. A kitchen that relies on plastic tubs will get less from it.

$21.74 3.8/5 Check price
03

Built for Arthritic and Weak Hands

Ergonomics (owner view) Positive Functionality (owner view) Positive Model KC12

KITCHENMUH aims the KC12 squarely at people who struggle with grip: rheumatoid arthritis, tendonitis, carpal tunnel, muscular dystrophy, frozen shoulder and the general loss of strength that comes with age. Buyers rate its ergonomics and function well, and the owner stories fit the pitch closely. A woman of 70 who lives alone says jars, including ones from the fridge, are no longer a problem. Someone who bought it for an arthritic mother says she uses it nearly every meal. An owner with a hand and wrist injury who had lost strength now opens factory-sealed jars with ease, and another with severe arthritis calls it a real help. There is also nothing sharp to worry about, since your hands never go underneath the opener. For a gift to a parent or grandparent who is starting to ask for help with jars, this is the kind of tool that removes a small daily frustration, which is how KITCHENMUH pitches it too.

$21.74 3.8/5 Check price
04

Battery Power, Durability and the Reset Routine

Size 7.28 x 4.33 x 2.75 in Motor 3 watts Durability (owner view) Negative

The KC12 runs on batteries, with no cord to manage, and one owner describes it running on two AA cells. At 7.28 by 4.33 by 2.75 inches it fits in a kitchen drawer, and KITCHENMUH lists a 3 watt motor. Durability is the aspect buyers rate worst, and it deserves weight. One enthusiastic owner is on a second unit after wearing out the first, and KITCHENMUH's own tips include a routine for a jammed unit: replace the battery first, press the switch for 3 seconds to restart the motor, then press it quickly 5 to 8 times. If it is still stuck, KITCHENMUH suggests wearing non-slip gloves, tilting the unit 30 degrees to the right and gently pulling it off. It also notes that the opener shuts itself off after the jaws reset, which can take several seconds and is normal. Fresh batteries clearly matter to how it performs, so keep spares. KITCHENMUH offers email support and weekday phone support if something goes wrong.

$21.74 3.8/5 Check price

How We Scored It

Based on
The manufacturer's published specifications and the product's live Amazon listing.
Owner rating
4.0 out of 5 on Amazon, recorded September 26, 2026
How we score
We score each thing that comes up most in owner feedback on the Higher Torque Electric Jar Opener. Five things come up most in owner feedback: three draw praise, one splits opinion and one draws mostly complaints. Its ratings average 4.0 stars (62% five stars, 12% four, 7% three and 19% one or two), so every score starts at 80, that average on a 100 point scale. Where opinion is split, we take off 6. Where it draws mostly complaints, we take off 12. Then we read seven owner reviews in full (every one we found gave it four or five stars) and move the score up to 5 points either way depending on how the owners who mention it rated the product. Our overall score starts from the same 4.0 star average and loses 0.1 for each thing that draws mostly complaints, with 0.1 more when at least a tenth of ratings are one star, never more than 0.3 in all. Here that takes off 0.2, which gives 3.8. Read our editorial standards

Ease Of Use

Four of the seven owner reviews we read mention it. All of them gave the product four or five stars. Score 85: we started at 80 and added 5 because the owner reviews that mention it are positive.

85Positive

Functionality

None of the seven owner reviews we read mention it. Score 80: its 4.0 star average on a 100 point scale.

80Positive

Ergonomics

None of the seven owner reviews we read mention it. Score 80: its 4.0 star average on a 100 point scale.

80Positive

Compatibility

None of the seven owner reviews we read mention it. 26% of all ratings are three stars or fewer, which is where complaints like this usually sit. Score 74: we started at 80 and took off 6 because opinion is split.

74Mixed

Durability

None of the seven owner reviews we read mention it. 26% of all ratings are three stars or fewer, which is where complaints like this usually sit. Score 68: we started at 80 and took off 12 because it draws mostly complaints.

68Needs Improvement

Owner Satisfaction

62% of ratings are five stars and 12% are four. 7% are three stars and 19% are one or two. A sizable share of ratings sit low, so weigh the drawbacks below as heavily as the praise. Score 80: its 4.0 star average on a 100 point scale.

80Mostly Positive

Specifications

Size and weight

Item Dimensions W x H
2.83"W x 4.33"H
Size
7.28*4.33*2.75inches

Power

Wattage
3 watts

Materials and warranty

Material
ļ¼ƒšŸ­ Best Seller
Color
White

Other specifications

Brand
KITCHENMUH

What Buyers Say

Based on 9,143 Amazon customer ratings, averaging 4.0 out of 5, recorded 12 September 2026. See the reviews on Amazon

5 stars 62%
4 stars 12%
3 stars 7%
2 stars 4%
1 stars 15%
★★★★★

Perfect for anyone we ho struggles to open a jar!

What an absolute Game Changer for anyone who struggles to open a jar! Could not be simpler to use! I place a non skid mat under it. Be sure to point the little gripper pads on the sides of o… Read it on Amazon
Kona · July 15, 2026 · Verified
★★★★★

Ease of use

I am incredibly happy with the Kitchenmuh KC12 Jar Opener. Opening stubborn, factory-sealed lids has always been painful due to wrist fatigue, but this device makes it entirely effortless. Y… Read it on Amazon
gaylene · September 3, 2026 · Verified
★★★★★

Easy to use and really works!!

Where do I start. Iā€™m 70 female and live alone. Opening jars has been a problem and heaven forbid I put a jar in the fridge before opening. Absolutely no problem anymore. Little jars, big ja… Read it on Amazon
Teresa Ulm · August 23, 2026 · Verified
★★★★☆

Does not work on some jars

Overall the unit works well, but not on some plastic jars
Humpinhenry · August 7, 2026 · Verified
★★★★★

Mom's Favorite New Appliance...

Got this for my arthritic mother, and she uses it every day (most every meal she prepares for herself involves opening a jar of artichoke hearts... don't ask me why she eats like a rabbit, I… Read it on Amazon
Shivershanx · September 7, 2026 · Verified
★★★★★

Easy to use!!!

This jar opener is wonderful!! I have severe arthritis in my hands so not enough strength to open ears. This is so helpful to me!!!
Sandra J Porter · August 15, 2026 · Verified

Setting It Up

  1. Fit Fresh Batteries

    Fit fresh batteries before first use. One owner describes it running on two AA cells. Weak batteries are the first thing KITCHENMUH suggests checking if the opener sticks, so keep spares in the kitchen.

  2. Wipe the Jar and Stand It on a Flat Surface

    KITCHENMUH asks you to wipe the jar body first, especially jars from the fridge, so the jaws do not slip. Stand the jar on a flat, steady surface. One owner puts a non-slip mat underneath for extra grip.

  3. Place the Opener on Top and Press

    Rest the opener on the lid and press the button. The inner jaws close on the lid and the outer jaws close on the jar body, then the motor turns the lid. Keep a hand resting on top to stop it tilting. One owner advises pointing the small gripper pads on the sides downward.

  4. Release and Lift Off

    When the turning stops, press the button again to release the jar. Check the lid has separated from the jar, then lift the opener off. After the jaws reset, the opener shuts itself off, which can take several seconds.

Common Questions

Will the KITCHENMUH KC12 open plastic jars or cans?

No. KITCHENMUH designs it for screw-top glass jars only and says it is not suitable for plastic, irregular or tapered jars or cans. Owners bear this out: more than one says it works well on glass but not on some plastic jars, and mayonnaise jars are named as an example. If most of your jars are plastic, it will not be much help.

Does it work on jars straight from the fridge?

Yes, as long as you wipe the jar first. KITCHENMUH advises drying the jar body, especially cold jars, so the jaws do not slip. An owner who lives alone says jars from the fridge are no longer a problem for her.

What size jars does it fit, and how big is the opener?

KITCHENMUH says it opens lids from 30 mm to 88 mm, with jaws that adjust to the size by themselves, and because it sits on top of the jar there is no height limit. The opener measures 7.28 by 4.33 by 2.75 inches, small enough to keep in a kitchen drawer.

Is this a good gift for someone with arthritis or weak hands?

Yes, if the person mostly uses glass jars. It needs no grip or wrist twist, just a button press and a hand resting on top, and buyers rate it well for ease of use and ergonomics. Owner stories include an arthritic mother who uses it nearly every meal and an owner with a wrist injury who can open factory-sealed jars again.

What should I do if the jar opener gets stuck?

Replace the battery first. Then press the switch for 3 seconds to restart the motor and press it quickly 5 to 8 times. If it is still stuck, KITCHENMUH suggests wearing non-slip gloves, tilting the unit 30 degrees to the right and gently pulling it outward. The opener also switches itself off after the jaws reset, which can take several seconds and is normal.

How durable is it?

This is its weak point. Buyers rate durability worse than any other aspect, and one devoted owner is on a second unit after wearing out the first. Keeping fresh batteries in it and using it only on glass jars gives it the best chance, and KITCHENMUH offers email and weekday phone support if it fails.

On Video

Higher Torque Electric Jar Opener KITCHENMUH Review

The Ancona Family

The Verdict

3.8Out of 5

The KITCHENMUH KC12 solves a specific problem well. For people whose hands can no longer grip and twist, it opens screw-top glass jars at the press of a button, and owners with arthritis, injuries and age-related weakness describe it as a daily help that keeps them independent. Buyers rate it well for ease of use, ergonomics and function. Two things hold it back: it is designed only for glass jars, so plastic tubs are hit and miss, and buyers rate its durability poorly, with KITCHENMUH's own tips including a reset routine for a jammed unit. Buy it for a glass-jar kitchen and keep fresh batteries ready.

Who should buy it

  • People with rheumatoid arthritis, osteoarthritis, carpal tunnel or tendonitis who struggle to grip and twist jar lids
  • Older adults living alone who want to keep opening their own jars without asking for help
  • Anyone recovering from a hand or wrist injury who has lost grip strength
  • Family members looking for a practical gift for a parent or grandparent who has started to struggle with jars
  • Households whose jars are mostly glass, rather than plastic tubs

For glass jars and weak hands, the KITCHENMUH KC12 is a genuine help that owners come to rely on daily. Just expect it to skip plastic jars, and keep fresh batteries and the reset steps close by in case it jams.

Check price on Amazon

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