Whetstone Grit Guide
Sep 27, 2026
Whetstone grit tells you how coarse or fine the abrasive is, and therefore how quickly it removes steel and how refined a finish it can leave. The right grit depends on the condition of the knife and the job you are doing. You do not need every grit, and a high number does not automatically make a knife sharper.
For the full sharpening system, read the Japanese Whetstone Guide.
Coarse: roughly 200-500 grit
Coarse stones remove steel quickly. Use them for substantial chips, broken-edge repair, heavy reprofiling or very dull knives that would take too long on a medium stone. They also create deeper scratches, so they are normally followed by a medium stone.
Do not use a coarse stone for routine touch-ups simply because it works faster; unnecessary metal removal shortens the useful life of the blade.
Medium: roughly 800-1200 grit
This is the most useful general sharpening range for many kitchen knives. Around 1000 grit can rebuild a normal dull edge, establish an apex and leave a practical working finish.
If you want only one stone for ordinary home maintenance, this is usually the range to consider first.
Refining: roughly 2000-4000 grit
These stones refine scratches from the medium stage and can create a smoother, more polished cutting feel. They are useful after the edge is already sharp. They are not a substitute for reaching the apex on the earlier stone.
Fine polishing: roughly 5000-8000+ grit
High-grit stones can produce a very refined polish, especially on steels and knife types that benefit from it. But kitchen performance is not always improved by maximum polish. Some foods benefit from a toothier edge, and some knives do not need a mirror-like finish for their intended work.
Is 1000 grit enough?
For many home cooks, yes. A properly formed and deburred 1000-grit edge can be extremely effective in the kitchen. Technique matters more than owning a long progression of stones.
1000 vs 3000 grit
Use 1000 to establish or restore the working edge. Use 3000 after the edge is already formed when you want additional refinement. If the knife is dull, starting only on 3000 may be unnecessarily slow.
1000 vs 6000 grit
They do different jobs. A 1000 stone is a sharpening stone for ordinary edge restoration; a 6000 stone is primarily a refining/polishing stage. A 6000 stone cannot efficiently replace the 1000 stage on a dull knife.
3000 vs 6000 grit
Both are refinement ranges, but 6000 generally produces a finer finish and takes longer to remove meaningful metal. For many all-purpose kitchen knives, 3000 can be a practical stopping point; 6000 may make sense when a finer edge suits the knife and cutting style.
What grit for carbon steel?
Steel family alone does not dictate grit. Carbon steels can respond very well to both medium and fine stones, but geometry, hardness and intended use determine the appropriate finish. Aogami and Shirogami do not require one universal progression.
What grit for VG10?
VG10 can be sharpened effectively on medium water stones and refined further if desired. Again, the condition of the edge matters more than the steel name. Begin coarse enough to do the necessary work, then stop when the edge performs as intended.
What grit for a chipped knife?
A meaningful chip may require a coarse stone because enough steel must be removed to bring the surrounding edge back to the depth of the damage. Large chips can change blade geometry and may be better handled by an experienced sharpener.
How many stones do you need?
Many home cooks can begin with one medium stone. A two-stone setup often adds either a coarse repair option or a finer refinement option depending on your needs. More stones are not automatically better.
Grit numbers are not perfectly universal
Different grit standards, abrasive types and binders mean two stones with the same printed number can cut and feel different. Treat the ranges as guidance and learn how your actual stone behaves.
The best stopping point is the edge you need
A kitchen edge should suit the food and knife. The goal is not the highest possible grit; it is a clean, stable, well-deburred edge with the cutting character you want.
Browse Sharpening Stones or return to the Japanese Knife Sharpening Guide.
