US treasury price conversion eg 123'18.5 to 123.536

[HHDXB]

Hi Friends 

I look forward to your email / help

Thanks

[#2]

@HHDXB 

With 133'18.5 in F3, the formula to convert it to a regular number is

=LEFT(F3,FIND("'",F3)-1)+MID(F3,FIND("'",F3)+1,10)/32

With 133.56 in L3, the formula to convert it to US Treasury notation is

=INT(L3)&"'"&MROUND(MOD(L3,1)*32,0.5)

[#3]

@Hans Vogelaar ,

That returns 133.58. I'm not familiar with fractional notation, my guess for 123'18.5 123 is taken as it is, next two is fraction of 32 and the rest is fraction of 256, i.e. 

=ROUND(LEFT(A1,SEARCH("'",A1)-1) + MID(A1,SEARCH("'",A1)+1,2)/32+RIGHT(A1, LEN(A1)-SEARCH("'",A1)-2)/256,2)

which returns 123.56

[#4]

@Sergei Baklan 

If that is the intention, it is better indeed. Thanks!

[#5]

@Hans Vogelaar 

Also not correct. If without rounding it returns 123.5645, but it shall be

Price conversion between fractional and decimal notation (iotafinance.com)

[#6]

@Sergei Baklan 

0.5625 corresponds to 18/32, so it ignores the .5 at the end...

[#7]

@Hans Vogelaar 

You are right. Strange, why do we need it if so?

Too complex for me Microsoft Word - Treasury Futures Price Rounding Conventions _March 2010.docx (cmegroup.com)

[#8]

@Sergei Baklan 

I think the OP will have to tell us what they really need.

[#9 · Accepted solution]

Thank you all for your time and input.
Hans Vogelaar : your setout with reverse calculation was a winner ..... I tested all 100% ..... excellent
Sergei Baklan : your set out to part of the question ... again worked well ... thank you