The best knife sharpeners under $50

Re-scored on this page's rubric rather than carried over; it is also ranked on best knife sharpeners, where it is judged against electric machines and premium clamp systems rather than against a fifty-dollar ceiling. Here it takes abrasive range and value outright, because no other product in the band gives you four abrasive stages in one object.

It wins on the thing this band normally fails at. A cheap sharpener usually gives you one abrasive and no angle, so you can grind metal off but you cannot finish an edge. This gives you 220-grit diamond to reset a damaged edge, 600-grit diamond to set the bevel, ceramic to refine it and leather to strop it — which is the same sequence a bench setup follows, in miniature. The guides are the other half: a moulded 20- or 25-degree surface means the bevel you set is the bevel you intended, which is the single biggest difference between a sharp knife and a shiny one. Knife sharpening angles explains why guessing low is the expensive mistake, and our beginner sharpening kit guide is the longer version of this argument.

Re-scored here; it is the budget clamp pick on best sharpening systems, which is the page where the rest of the clamp category lives and the page this site earns most of its affiliate clicks on. The reason it sits second rather than first under fifty dollars is speed, not edge quality: on angle control it beats the winner.

The clamp is the whole product. Every other sharpener here either asks you to hold an angle or decides one for you; a clamp fixes the blade and the hone at a stated number, and seventeen degrees is available, which matters because it is the only option in the band that suits a thin Japanese-style edge. Best knife sharpeners for Japanese knives is where that requirement is taken seriously. The cost is time and the alumina-oxide abrasive, which is softer than diamond and will struggle on modern powder steels — fine for kitchen stainless, slow on a high-vanadium folder.

Re-scored here; it is the first-stone pick on best sharpening stones for beginners and ranked on best sharpening stones. On this page it takes edge quality outright and loses angle control and ease of use, which is the honest trade a stone makes.

Put it first if the goal is the best possible edge and you are willing to spend an evening learning. A 400/1000 combination is the correct first pair: coarse enough to reset a neglected kitchen knife, fine enough to finish it. How to sharpen kitchen knives is the method, whetstone grits explained covers why those two numbers and not others, and how to flatten a whetstone is why the included flattening stone matters more than it looks.

Re-scored here; it is the budget pick on best electric knife sharpeners, where the rest of the category sits well above this band. It wins ease of use on this page and loses everything that depends on control.

The honest case for it is behavioural rather than technical. A sharpener that nobody uses produces no sharp knives, and the single most common outcome of buying a water stone is a water stone in a cupboard. This has no learning curve, no setup and no cleanup, so it gets used — and a cheap stamped knife that is slightly over-ground and sharp beats the same knife untouched and blunt. What it must not meet is a good knife. Do electric knife sharpeners ruin knives is the honest answer to the obvious question, and it is more nuanced than either camp claims.

Re-scored here; it is the cheap emergency option on best knife sharpeners. It is the budget pick on this page in the specific sense the term should mean: the cheapest product that does the job, where the job is narrow and honestly described.

What it is good at is a dull knife and a meal in progress. What it is bad at is being your only sharpener. Carbide blades in a pull-through remove metal by scraping, which is fast, effective and the reason a knife sharpened this way for five years ends up visibly narrower with a wire edge that keeps rolling over. If this is the only sharpener you buy, buy it knowing that — knife sharpening mistakes lists it among the common ones, and why is my knife still dull after sharpening is usually a wire edge from exactly this.