How to Sharpen Kitchen Knives: A Step-by-Step Guide for Home Cooks

Here's how to sharpen kitchen knives at home, in short: hold the blade at a steady angle (around 15–20° per side for most kitchen knives) on a medium whetstone, sharpen one side until you feel a small burr along the whole edge, repeat on the other side, then refine on a finer stone and remove the burr with light alternating strokes. Between sharpenings, a few passes on a honing rod keep the edge aligned so you sharpen less often.

That is the whole method. The rest of this guide helps you choose the right tool, find and hold the angle, work through each step, and fix the problems that stop most home cooks from getting a truly sharp edge.

Sharpening vs honing: know which one your knife needs

These two jobs are often confused, and mixing them up is a common reason a "freshly sharpened" knife still feels dull.

• Honing realigns an edge that has rolled or bent slightly in use. It removes little or no steel. A knife that cut well yesterday and feels a bit off today usually needs honing.
• Sharpening grinds away a thin layer of steel to form a new edge. A knife that squashes tomatoes, slides off onion skin or tears herbs even after honing needs sharpening.

Quick test: if a few strokes on a rod bring the bite back, honing was enough. If nothing changes, get out the stone. Our article on when knives should be sharpened lists the clearest signs.

Which sharpening method is best at home?

There is no single best tool for everyone. The right choice depends on how much control you want, how much time you have and what knives you own.

For most home cooks who care about their knives, the best knife sharpening technique at home is a whetstone for sharpening plus a rod for maintenance. An electric sharpener is a reasonable shortcut if you won't practice on a stone. To be upfront about our range: SAMURA sells whetstones, a diamond stone, a ceramic honing rod, a sharpening angle holder and an electric diamond sharpener, but no manual pull-through sharpener. You can see everything in our sharpening tools.

Choosing the right whetstone grit

The grit number tells you how fine a stone is: the lower the number, the coarser the abrasive and the more steel it removes. SAMURA groups its stones by job.

• Coarse (#240–#800). For chipped, badly worn edges or a knife whose angle needs correcting. Not for routine sharpening.
• Medium (#1000–#2000). The workhorse. A #1000 stone is where most sharpening sessions start, and it handles light resharpening on its own.
• Fine (#3000–#8000). For refining and polishing the edge after the medium stone. A #8000 stone can leave a mirror-like finish.

If you buy one stone, a combination stone is the easiest start. The Samura #1000/#3000 combination whetstone sharpens on one side and finishes on the other. For a full grit-by-grit comparison, see our guide on how to choose a knife sharpening stone, or browse the whetstones.

Finding the right sharpening angle

The angle is measured between the blade and the stone, per side. As a rule of thumb:

• Japanese-style and thin blades: about 15–17° per side. This is the factory bevel angle SAMURA gives for its kitchen knives.
• Heavier Western knives: about 17–20° per side for a tougher edge.
• Cleavers: much wider. The Harakiri cleaver, for example, has a factory angle of 40°, so the edge copes with chopping.

A lower angle cuts more easily but is more delicate; a wider angle holds up better to rough work. More important than the exact number is keeping it the same on every stroke. A simple trick: hold the blade at 90° to the stone, halve it to 45°, halve again to about 22°, then lower it slightly. If you struggle to stay consistent, a sharpening angle holder sits on the spine and keeps the tilt constant while its ceramic guides slide over the stone.

How to sharpen kitchen knives with a whetstone, step by step

1. Prepare the stone

Soak a water stone completely for 10–15 minutes and keep the surface wet while you work. Other stone types may have their own instructions, so check them first. Set the stone on a non-slip base or a damp towel so it cannot move.

2. Sharpen the first side until you raise a burr

Start on the coarser side. Lay the knife at your chosen angle, edge facing away from you, and push it across the stone with light, even pressure, sweeping from heel to tip so the whole edge makes contact. Keep going until you can feel a fine burr, a tiny wire of metal, along the opposite side of the entire edge. Feel for it by sliding a fingertip from the spine toward the edge, never along it.

3. Repeat on the second side

Turn the knife over and work the other side the same way, with roughly the same number of strokes and pressure, until the burr flips back. Matching both sides keeps the edge centered so the knife doesn't steer through food.

4. Refine on the finer grit

Turn the stone over or switch to a finer one and repeat the process with less pressure. This smooths out the scratches from the coarser grit and leaves a keener, longer-lasting edge.

5. Remove the burr and test

Finish with a few very light, alternating strokes, one per side, to remove the burr. Rinse and dry the knife, then test it on a sheet of paper: a sharp edge slices cleanly without snagging. Never test sharpness with your fingers.

Sharpening a single-bevel Japanese knife? Work the beveled side until a uniform burr forms, then pass the flat back side lightly over the stone to remove it. For a deeper dive into stone technique, read how to sharpen knives with a whetstone.

Using a honing rod and an electric sharpener

Honing rod

Hold the rod by its handle and draw the edge along it from the heel of the knife to the tip, alternating sides, at the same angle you sharpen at. A few light strokes are enough. The Samura ceramic honing rod is 254 mm long and polishes the existing edge rather than cutting a new one.

Electric sharpener

An electric sharpener does the angle work for you. Ours uses diamond-coated abrasives with a separate groove for each side of the blade, works on steel and ceramic knives, and has a replaceable sharpening unit. Pull the knife through slowly, without pressing down, and do the same number of passes on each side.

Troubleshooting: why your knife still isn't sharp

• No burr forms. Your angle is probably too low, so the stone isn't reaching the edge, or you stopped too early. Raise the spine slightly and keep going.
• The burr appears only in places. You're skipping parts of the edge, usually the tip or the heel. Shift your hand so the whole length passes over the stone.
• Sharp at first, dull after a day. The burr wasn't fully removed and has broken off. Finish with lighter alternating strokes or a finer stone.
• The edge looks rounded or shiny. The angle wandered during strokes. Slow down and use shorter, controlled movements, or try an angle holder.
• Deep scratches on the blade. Too much pressure or the blade lying too flat. Let the stone do the work.
• A chip or a bent tip. That needs a coarse stone first to reshape the edge before normal sharpening.

Serrated knives are a different job: a flat stone won't reach inside the scallops. See our guide to sharpening serrated knives.

Make the edge last longer

• Cut on wood or plastic boards, never on glass, stone or plates.
• Wash by hand and dry straight away; skip the dishwasher.
• Use the spine, not the edge, to scrape food off the board.
• Keep bones and frozen food for a cleaver or saw knife.
• Store knives so their edges don't knock against metal.

Choosing knives that are easy to maintain helps too. Our Harakiri knife review looks at a line built with simple home sharpening in mind.

FAQ

How often should I sharpen kitchen knives?

For most home cooks, a proper sharpening every few months is enough, with honing every few uses in between. Sharpen when honing no longer brings the edge back.

What is the easiest way to sharpen a knife?

An electric sharpener with fixed guides is the easiest. A whetstone takes some practice but gives you the most control and the best edge.

What grit should I use to sharpen a dull knife?

Start with a medium stone around #1000. Only go coarser if the edge is chipped or badly worn, and finish on #3000 or finer.

Do I need to soak my whetstone?

Water stones usually need 10–15 minutes fully submerged and should stay wet while you sharpen. Always follow the instructions for your particular stone.

Can I sharpen a Japanese knife the same way?

Yes, if it has a double-bevel edge: use the same steps at a lower angle, around 15–17°. Single-bevel knives are sharpened mostly on the beveled side.