Sharpen Knives at Home (3 Methods, Ranked by Cost)

The best way to sharpen knives at home is a combination whetstone: 1,000 grit to rebuild the edge, then 3,000 to 6,000 grit to refine it, holding a steady 15 to 20 degrees per side. A pull-through is the cheapest option and a good electric sharpener is the most expensive, but the whetstone gives the longest-lasting edge for a modest price. A honing rod doesn't sharpen. It keeps the edge aligned between sessions.

You know the moment. The knife skids off a tomato skin instead of biting, and your other hand is right there in the path.

Which method should you pick?

All three remove metal to build a new edge. They differ in how much metal they take, how much control you get, and how long the result lasts.

Pull-through. It drags the blade through abrasive slots at a fixed angle. It does sharpen, but it removes far more metal than necessary and leaves a rough edge that won't hold. Fine for a beater knife in a rental kitchen, not for anything you care about.

Whetstone. A 1,000/3,000 or 1,000/6,000 combination stone handles nearly everything a home cook will see. Use the coarse side when the knife is truly dull or has small chips, and the fine side to polish. This is what I'd buy.

Electric. A good one with staged abrasive wheels gives a decent edge with almost no skill. Budget electric models are no better than pull-throughs, so if you go this route, spend the money or skip it.

Whichever you choose, sharpen every one to three months depending on how much you cook, and hone in between.

How to sharpen on a whetstone

One thing matters more than grit, pressure or stroke count.

Hold the same angle on every stroke.

Let it drift and you grind two or three bevels at once, which leaves a weak, rounded edge. Western knives, like most German chef's knives, take 20 degrees per side. Thinner, harder Japanese blades like a gyuto take 15. Our sharpening angles guide covers the edge cases.

1. Wet the stone. Soak a water stone 5 to 10 minutes, until bubbles stop rising. Oil stones take honing oil instead. Keep the surface wet the whole time so metal particles stay suspended instead of clogging the stone.
2. Mark the bevel. Run a permanent marker along the edge bevel. After a few strokes, if the ink is gone evenly across the bevel, your angle is right. If only the shoulder or only the very edge is clean, adjust.
3. Set your grip. Dominant hand on the handle, two or three fingertips of the other hand on the flat of the blade for light downward pressure, fingers clear of the edge.
4. Work the coarse side. Push the blade edge-first across the stone, as if slicing a thin layer off the top, sweeping heel to tip in one arc. Do 8 to 10 strokes on one side.
5. Feel for the burr. Run a fingertip gently off the opposite side of the edge. A faint ridge of pushed-over metal means that side is done. No burr, keep going. Then repeat on the second side.
6. Refine on the fine side. Flip the stone and use lighter pressure, 5 to 8 alternating strokes, one per side, to wear the burr down. Pressing harder here only scratches the polish.
7. Finish on a strop or rod. A few light passes on a leather strop or smooth honing rod removes the last of the burr. It takes 30 seconds.

Test on printer paper: a sharp knife slices it cleanly without tearing. A ripe tomato is a harder test, since a well-sharpened edge breaks the skin under the knife's own weight. Once you have both burrs and have moved through your grits, stop. Extra strokes just wear the edge away.

Related: The 3 Sharpening Angles That Fix a Dull Knife Fast

How do you keep the edge longer?

Hone before every real cooking session. Set the rod tip-down on a folded towel, place the heel of the blade near the top at your sharpening angle, and draw down and toward you, heel to tip, with light pressure. Four to six strokes per side, alternating. A smooth steel or fine ceramic rod is better than a ridged one, which behaves closer to sharpening.

On the line, cooks hone constantly and send knives to the stones far less often. That rhythm is worth copying at home because it costs you under a minute.

• Cut on wood or plastic. Glass, ceramic, stone and metal boards wreck an edge fast.
• Wash by hand. Dishwasher heat, detergent and rattling dull the blade and can damage the handle. Dry it right away.
• Store edges apart. A magnetic strip, block or blade guard beats a loose drawer.
• Keep the stone flat. A stone worn hollow in the middle rounds your edge. Flatten it now and then with a lapping plate or by rubbing two stones together under running water.
• Don't chop bone with a chef's knife. It chips the edge. That's cleaver work.

A sharp knife also only helps if you hold it right, so see Chef Knife Grip: Why You're Holding It Wrong if your cuts still feel clumsy. If your knife feels dull again within days of sharpening, look at your board and your honing habit before you blame the stone.

Related: Knife Skills: 5 Cuts Every Home Cook Should Know