Here are a couple of hand evaluation calculators that you might find interesting.
Both evaluators include what is known as the Kaplan-Rubens (or k & r) evaluation. The Jeff Goldsmith evaluator also refers to the D.K. (Danny Kleinman) evaluation. These evaluation methods and their method of calculation are discussed in the articles below.
k & r is probably too complicated for use at the table, but a study of the method of calculation gives a guide as to how, for instance, honour combinations and length can be valued. D.K. leaves us with more familiar terminology for those who regularly tell partner "well I did have a good 10 for my opening bid".
There is a 20 years old very complex hand valuation method known as 4 C's (aka k & r) designed by Edgar Kaplan with assistance from Jeff Rubens. Kaplan and Rubens were editor and sub-editor of Bridge World and the 4C's article was published in the October 1982 issue. The 4C’s stood for “Caution, Complex Computer Count” according to Kaplan, who warned ordinary mortals against using it at the table but rather for post mortem analysis.
The k & r hand valuation comprises a couple of components with an adjustment for shape at the end
The 321 count is based on A=3, K=2, Q=1 with adjusted values on Kings and Queens and values on some Jack and 10 holdings.
QJ doubleton counts as 0.50 (.25 for Q and .25 for J)
Danny Kleinman points originate from a September 2001 Bridge World letter from Doug Bennion of Toronto. Bennion's research looked at a new point-count called Little Jack Points (LJP). Bennion counted A=6.5, K=4.5, Q=2.5 and J=1 as his research showed this better reflected their relative values than the traditional 4321 valuation. He then added .5 for any two of these cards working together in the same suit (except a QJ combination). To transform the result to a scale that we recognise multiply the result by 10/14.5.
Danny Kleinman's version more closely reflects the judgement of Edgar Kaplan in his 4C's (Bridge World October 1982) article.
Example of end result : 8- (a poor 8) , 12 (an ordinary 12) , 15+ (a good 15).