Best Knife Sharpener 2026: The Grit Field Holds a Word

The most-reviewed knife sharpener on Amazon and one of the most-reviewed products on this site: 79,547 ratings at 4.5 stars, 69 per cent five-star and 3 per cent one-star, for £8.00, and first in Amazon's Manual Knife Sharpeners category. It works by suction: a PowerGrip base clamps to the worktop, the knife is drawn through two tungsten carbide blades, and the hands stay away from the edge, which is both the safety claim and the reason it outsells everything else.

What it also does — uniquely in this ranking — is state the angle. Pre-set at the optimal 20-degree angle, the listing says, and that is the only angle in any of the ten sharpeners here, where the equivalent field in the knives themselves was published by one listing in ten. Twenty degrees is the European kitchen convention, the angle a German chef's knife is ground to, and knowing that a sharpener imposes it is the difference between maintaining a blade and slowly changing its character: a Japanese knife ground at twelve degrees will end up at twenty if it is put through this every week.

Its pricing is the other thing worth noticing, because this product appears twice in this ranking. The black version is £8.00 and the silver is £10.00, they share the same 79,547 ratings, and their model numbers are ANYSHARPBLACK and ANYSHARPSILVER — which is to say that the colour is the model, and it costs two pounds. The same listing records a fine grit type for a tool that removes metal rather than honing it, and its own GTIN field contains a single code where the silver version's contains two. Its reviews are the reason for the rank: a buyer who was a chef for twenty years calling it one of the best sharpeners they have used, and another who has sharpened every knife and pair of scissors in the house with it.

The same tool as number one on a second listing, and two pounds more expensive for the colour. Both share the 79,547 ratings and the same 4.5 stars, both are ranked first in Manual Knife Sharpeners, both state the same pre-set 20-degree angle and the same PowerGrip suction base — and the black version costs £8.00 against £10.00 here. It is the clearest example in this ranking of a listing where the only variable is the finish, and it makes the point that £2 is what silver costs.

Its identification fields are the interesting part, and they are better and worse than the black version's at the same time. The manufacturer part number is ANYSHARPSILVER, which is a real code with the colour inside it, and the model number is 42535, which is a genuine model — both better than the black listing, whose model number is ANYSHARPBLACK. Then the GTIN field contains two barcodes separated by a comma: 05037430044927 and 05037430701226. Two global trade item numbers for one product means the field was filled from a system that had more than one record, and since a barcode is the one identifier that must be unique, it is worth knowing that this page is not certain which product it is describing.

The tool itself does what the first listing says it does, with one difference in the specification that neither version explains: the grit type is recorded as fine, which is what the black version says too, on a device that uses tungsten carbide to cut a new edge rather than a stone to refine one. Its reviews describe a buyer sharpening every knife and pair of scissors in the house, and another whose knives now slice through things that previously resisted. If you want the tool, buy the black one; if the colour matters, this is what it costs.

The best-selling multi-stage sharpener here and the clearest demonstration of what the grit field is for and how it is used. It is a three-stage tool — coarse, medium and fine slots, using tungsten carbide for the first and ceramic for the rest — and its grit type field says coarse. One word for a product whose entire purpose is to provide three grades, on a listing whose photographs show three labelled slots and whose bullets say 3-Stage Manual Knife Sharpener. It is not a lie; it is a field filled in with the first option available, and it makes the three sharpeners here that do the job properly stand out.

The second field is worse. The manufacturer part number is Does not apply, which is the answer a form gives when the person filling it in has decided not to, and it sits in the field a customer would use to find the right product again. The model number is KIO, which is at least a string. Against that, the materials are recorded accurately — ceramic and tungsten carbide — and the design details are real: a non-slip rubber base, a handle that works for left and right-handed users, 185 grams, and dimensions of 7.5 by 4.5 by 2 centimetres, which is small enough for a drawer.

Its record is 24,187 ratings at 4.5 stars with 70 per cent five-star and 2 per cent one-star, the second-largest sample in this ranking and the second-best distribution among the large ones, and it is ranked third in Manual Knife Sharpeners. The reviews are the ordinary ones for a tool that works: it did the job and left the knives sharp, and it is easy to use and pleases its buyer. At £12.99 it is the middle of the price range and the one to buy if you want the three grades in one body rather than one grade and a claim.

The smallest sharpener in this ranking and the one whose reviews are most direct about what a carbide sharpener does. It is a two-stage tool weighing 70 grams, 6.2 by 6.2 by 6.7 centimetres, using tungsten carbide to cut a new edge and a finer stage to tidy it, priced at £12.99 with 10,515 ratings at 4.4 stars, 66 per cent five-star and 4 per cent one-star, and ranked second in Manual Knife Sharpeners.

One of its featured reviews says the thing no manufacturer does: takes a lot of metal off the blade, take it easy when dragging through. That is the trade of every pull-through carbide sharpener, including the ones at the top of this page, and it is worth repeating because it explains why a sharpener and a whetstone cost the same money and do different jobs. Carbide cuts a new bevel by removing steel, quickly and reliably; a stone refines the bevel that is already there, slowly and with a risk of going wrong. A knife sharpened weekly with carbide will be visibly slimmer within a year, and that is a fact about the technique rather than about this product.

Its specification has the same flaw as the sharpeners above it: the grit type is recorded as fine, which describes neither stage of a tool that starts by cutting metal. The rest is competent — a material of tungsten carbide, a weight of 70 grams, a compact shape that fits a pocket or a drawer, and a bullet claiming it is preset at an angle that the text cuts off before naming. At £12.99 for a ten-thousand-review tool, it is the right purchase for someone who wants a sharpener that disappears into a drawer, and the wrong one for a knife they care about.

The same sharpener as number four in a different colour, at the same price, carrying the same 10,515 ratings and the same 4.4 stars, because Amazon pools them. The colour is Ruby Red against the other listing's Black, and the two pages differ in exactly two other places, both of them in the specification rather than the product.

The first is the weight: this listing says 60 grams and the black version says 70. Ten grams is not a rounding error on a sharpener that weighs 70, and nothing about a colour change affects it, so one of the two listings is wrong — and a buyer comparing the two by weight, which is a reasonable thing to do with a pocket tool, would conclude that red is lighter. The second is the order of the dimensions: 6.2 by 6.7 by 6.2 here against 6.2 by 6.2 by 6.7 there, which is the same cube described in two sequences with no labels. Neither error changes what arrives, and both are evidence of the same thing this article keeps finding: spec tables are copied, adjusted and never checked.

The tool is the one described at number four, with all its virtues and its one vice. It is compact, it uses tungsten carbide, and it removes metal — a buyer of this very listing writes that it takes a lot of steel off the blade and to take it easy when dragging through. Its other review is a comparison rather than a description: it works better than other sharpeners at a higher price. At £12.99 for either colour, the decision between this listing and number four is the decision between red and black, and the weight difference is a typo rather than a fact.

The only sharpener in this ranking that fills its grit field with numbers, and the juxtaposition is the whole article. Nine of these listings record the grit as a word: coarse, fine, or fine, or coarse. This one records 1000/6000, which is the same information a knife maker would use, and it appears both in the title and in the specification field as 1000/6000 — one value for each side of the stone, with no ambiguity about which is which.

What the numbers mean is worth stating, because nowhere on the page does. A 1000-grit stone is a sharpening grade: it removes enough steel to raise a fresh edge and leaves it slightly toothy, which is what a kitchen knife wants. A 6000-grit side is a finishing grade, used to polish that edge on a few light strokes. A pull-through sharpener with two tungsten carbide blades and no grit numbers is doing roughly the work of a 300-grit file, which is why its own reviewers warn about the metal it removes. If you want to know whether you are maintaining a knife or grinding it away, the grit number is the answer, and this is the listing that gives it.

The rest of the product is designed for someone who has never used a stone. It is used with water rather than oil, which makes it less messy and easier to keep in a kitchen drawer; it comes with a non-slip bamboo base; and it includes an angle guide, which is the piece of equipment that makes freehand sharpening repeatable. It weighs 953 grams, measures 21.3 by 9.1 by 4.6 centimetres, and holds 1,560 ratings at 4.5 stars with 71 per cent five-star and 2 per cent one-star, ranked second among whetstones. Its reviews include one buyer who says they have never had sharper knives and tells the reader to stop stalling — which, for a product that requires an evening of practice to learn, is the most useful recommendation here.

The sharpener with the best information in the wrong places. Its bullets give both of its grades with numbers — 400 mesh coarse on the rotating side and 1000 mesh fine on the fixed side — and explain the mechanism, which is a diamond disc that rolls the knife through at a consistent angle rather than a slot the knife is pulled through. The grit type field, meanwhile, says fine, because one word is what the field accepts and nobody chose to type two.

That gap between the bullet and the field is the article in miniature, and it appears here alongside two other familiar defects. The model number is 01, which is not a model number but the first value in a dropdown. And the category badge says this is ranked first among Sharpening Steels, which is a category for the long rods sold with knife sets; a rolling sharpener with industrial diamond discs is about as far from a steel as a sharpener can be. As with the chef's knife filed among santokus and the santoku filed among boning knives in this site's other rankings, the badge describes an algorithm rather than the product.

What the tool offers is the most controlled sharpening here without practice. The rolling motion fixes the angle for you, the discs are industrial diamond, and the design keeps the blade flat against the stone rather than relying on the steadiness of a hand — for someone who has tried a whetstone and produced a wobbly edge, that is worth paying for. It weighs 570 grams, measures 15 by 14 by 3.9 centimetres, and holds 1,351 ratings at 4.2 stars with 63 per cent five-star and 7 per cent one-star, which is the second-weakest distribution of the larger samples. Its reviews are positive about the motion: noticeably sharper edges, simple to use, and it works well. At £24.99 it is the dearest sharpener here, and the title's collection of gift keywords — birthday present, Father's Day — suggests a product that is not sure who is buying it.

The listing that fills the grit field the way it should be filled, and the only one that thinks about what happens to the hand holding the knife. Its three grades are recorded as coarse, medium and fine, which is the whole specification in three words rather than one, and its 4-in-1 claim is explained rather than asserted: three stages for knives plus a dedicated scissor slot, which is the fourth function and the one most households need. Scissors are the tool everyone owns, nobody sharpens, and quietly stops cutting paper years before they are thrown away.

The safety glove is the other detail no competitor here offers. A pull-through sharpener asks a user to draw a blade towards the body while holding the tool with the other hand, and a glove for the holding hand is the kind of precaution that reads as over-cautious until the first time it is needed. It is included in the box, it is recorded in the item type field as part of the product's name, and it is the sort of thing a large retailer's own brand does that a marketplace seller does not.

What you get for £8.89 is a 322-gram tool 22.6 centimetres long, with metal and plastic construction, a non-slip base, and a copy that describes it as suitable for kitchen knives, pocket knives, hunting knives and other straight-edged blades — which is a longer list than most home cooks need and a fair description of what a pull-through tool can do. Its record is 751 ratings at 4.4 stars with 68 per cent five-star and only 1 per cent one-star, the best one-star share of any listing here apart from the whetstone. The reviews are brief and satisfied: simple, basic and easy to use, inexpensive to boot, and effective on work tools as well as Sabatier knives.

The cheapest three-stage sharpener here, and the second of the three listings that fills the grit field properly. Its grades are recorded as coarse, medium and fine, and its bullets explain what the seven functions are: a coarse slot, a fine honing slot, a polishing slot, and slots for different knife types including serrated and ceramic blades, plus a scissor sharpener. Counting functions is how these products are sold, so the number seven is marketing — but the grits behind it are real, and this listing names them.

Where its paperwork slips into the familiar pattern is the model number, which is recorded as 7-in-1: the marketing name in the field meant for a manufacturer's code. That is the same habit as the chef's knife whose model number reads 8 inch Chef Knife and the smartwatch whose model is Extra Wide, and it has the same consequence, which is that a buyer cannot search for the product again by its identifier.

The tool is a 310-gram pull-through, 24 centimetres long, made of plastic with a grip that the bullets describe as textured and anti-slip, and it costs £5.98. Its record is 224 ratings at 4.2 stars with 62 per cent five-star and 7 per cent one-star, which is a small sample and a middling distribution, and its reviews are the ones that make the case for buying one of these at all: a buyer whose old knives were sharpened quickly and now slice properly, and another who says they had been buying new knives because they dislike blunt ones, and no longer does. At £5.98 it is the cheapest way here to get three grades in one body, and the one to choose if the question is whether a sharpener is worth having at all.