vba - which one is faster to lookup value in Excel? -


an article said using vlookup quite slow , can use double vlookup increase speed.

single vlookup (unsorted data fine) =vlookup(look_value,a1:b100,2,false)  double vlookup (need sorted data) =if(vlookup(look_value,a1:a100,1,true)=look_value,vlookup(look_value,a1:b100,2,true),na())

the article said having 10,000 rows, double-vlookup 28 times faster , 3600 times faster if there 1,000,000 rows.

i not sure conclusion above.

and confused 1 of below functions faster?

  1. double-vlookup(sorted data)
  2. single-vlookup
  3. lookup(sorted data)
  4. combine index , match


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