Knife sharpeners review and compare

We test knife sharpeners for safety and performance.
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  • Updated:6 May 2009


The following models scored the best results in our test.

What to buy
Brand Price
Cuisinart KS-80A $199
Anolon Universal Sharpener $80
Breville BKS600 Ikon $115
Chef’s Choice 2 stage Sharpener 450 $60
Furi Ozitech Diamond Fingers Knife Sharpening System FUR626 $50
Minosharp Water Sharpener 220/GB $60
Kuhn Rikon Kyocera Knife Sharpener KR-2941* $32

*The first Kuhn Rikon model we tried didn’t sharpen to an acceptable level. Our tester discovered the stone wheels had separated, so we retested a second model that gave a much better resul

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Results table

Full results for all models are shown in the table below.

Brand / model (in rank order) Overall score (%) Performance (%) Ease of use (%) Sharpening stages Sharpening material Serrated knife use Left- / right-hand use Manual / electric Price $
Cuisinart KS-80A
91 90 91 3 Stone Y Either E 199
Anolon Universal Sharpener
86 90 82 3 Stone N R M 80
Breville BKS600 Ikon
86 90 82 1 Ceramic N R E 115
Chef's Choice 2 stage Sharpener 450
86 90 82 2 Diamond N Either M 60
Furi Ozitech Diamond Fingers Knife Sharpening System FUR626 85 90 80 1 Diamond N Either M 50
Minosharp Water Sharpener 220/GB
02 9482 6666
85 90 80 2 Stone N Either M 60
Kuhn Rikon Kyocera Knife Sharpener KR-2941
84 90 77 1 Stone N Either M 32
Scanpan Sharpener Classic 3 Step Knife Sharpener
80 80 80 3 Tungsten carbide, diamond and ceramic N Either M 60
Zwilling J.A. Henckels Twinsharp 32590-200 Blue
79 90 68 2 Tungsted carbide and Ceramic N R M 43
Victorinox Knife Sharpener 7.8715
73 80 66 1 Tungsten carbide N Either M 36
Wiltshire WILT595064 Knife sharpener
71 90 52 1 Tungsten carbide N Either M 30
Accusharp Knife and Tool Sharpener
68 80 55 1 Tungsten carbide Y Either M 39
Smart Chef Knife Sharpener with Grind Stone
68 80 55 1 Stone N Either M 4
Russell Hobbs RHKS1000
67 60 73 1 Stone Y (+scissor) Either E 40
Saphire Knife and Tool Sharpener
62 60 64 1 Tungsten carbide N Either M 35
Wusthof Knife Sharpener 4344 (ceramic)
57 40 73 1 Ceramic N Either M 80


Using the table

Scores The overall score is made up of:

  • Performance: 50%
  • Ease of use: 50%

Features See What to Look For.

Price Recommended retail, as of April 2009.

How we test

Out tester uses a new Victorinox Fibrox 20cm chef knife for each sharpener. Each knife is tested for sharpness on arrival from the manufacturer and is then put through a blunting process. Our tester sharpens each knife according to manufacturers’ instructions, however if the desired sharpness is not achieved, it’s continued until the edge is found to be sharp.

Performance After sharpening, each blade is assessed by slicing an A4 sheet of paper from the edge (the knife should slice through without tearing), and cutting the skin of a tomato (it should slide through cleanly and smoothly mostly under the weight of the knife).

Ease of use This is a combination of ease of sharpening the knife, ease of reading and following the instructions, and how safe the sharpener is to use.