No free options I know of since Pantone color guides sell for quite a pretty penny. However, if you have Illustrator, Photoshop or InDesign you can easily do the conversion there:

I get: C-0% M-81% Y-51% K-0% for 805 Solid Coated (sort of a pinkish red)

----
Powerpoint is not a design application

First, here's a brief article to help you out with how to do it yourself using Adobe's applications.

One option is Art Director's Toolkit, for $40 (kinda expensive, but does a lot)

-----------
Visit The Graphic Mac for graphics and Mac OS tips, reviews, tutorials and discussion.

You may go to Pantone website sign up for a free membership and then you can download a support PDF file with all Pantone to CYMK conversion values.

http://www.pantone.com/pages/pantone/pantone.aspx?ca=12&pg=19422

What does the 2X mean in 'Pantone 805 C 2X'?

As long as you and your customers are aware, achieving ANY fluorescent ink reproduction in cmyk is NOT possible whatever Illustrator, Photoshop or InDesign says. Especially a "double bump" (2X) fluorescent! Special pigments are used in the inks that are just not reproducible in process color. This goes the same for Pantone 021, 032, 072, reflex blue, rubine red, and many other pms conversions.

If logo reproduction or company colors come into play, be sure that customers understand pms-to-cmyk conversions are far from perfect. A process color imaging guide is a small investment to be sure customers know what they will be getting and in the long run will save you $$.

Best Regards

ImageMakerGraphics

There is a certain value in getting a Pantone Process Guide, but since Pantone is publishing Lab values on their swatch books it appears even they are getting away from declairing C%M%Y%K% = PANTONE 805 and for very good reason.

The article that JimD points to is a little misleading because the author does not mention icc color profiles and the numbers that natobasso points are correct for magazine publications but not sheetfed.

Follow these steps to determine the best CMYK mix to match PANTONE.

1) Make a new file (a small one) in Photoshop in Lab mode.
2) Use the color picker to find and select the Pantone.
3) Fill your document with the color.
4) press shift-command-K, to bring up your color settings
5) Make sure you have Relative Colormetric setting.
6) Under 'Working Spaces' in CMYK choose 'U.S Web Coated (SWOP)v2' if going to a web press. If going sheetfed, choose 'GRACoL2006_Coated1v2' or 'SNAP 2007' if going to newsprint. You may have to locate and download the last two profiles, otherwise use what you're print shop suggests.
7) Use your eyedropper and info palette to see what the CMYK breakdown is.

Now, if your proofer is set to output files that match the profile you have chosen (and it's pretty accurate), you will have a good, if not exact color match. Better still, your numbers will be appropriate for that print method.

Also, be sure to set your color settings BACK to where they were, otherwise all of your RGB to CMYK conversions will be done with the new settings. That can spell a lot of trouble especially if your settings are for sheetfed but your files are going to newsprint!

Good luck and always be careful with your settings!

While there may be several best methods for converting PMS to Process, (and I would agree that if proper methods are followed you can exactly match SOME pms colors) ~ I would just like to re-state for the sake of rejected jobs and unhappy customers:

~ 805 C 2X (which is a double bump fluorescent ink) CAN NOT be reproduced in process ~ (BTW This also applies to all "metallic" inks PMS-871 through PMS-877 and all of the PMS-8000> these inks contain special pigments or actual metallic flakes that are just not found in cyan, magenta, yellow, or process black inks)

Sure, you can get in the color "neighborhood" ~maybe~ in a non-fluorescent sort of a pinkish red color look. But I would NEVER print a job with a client expecting a 2X 805 color and then delivering a process non-fluorescent "sort of a pinkish red" color job - They are bound to be unhappy.

The "process color imaging guide" is valuable in the fact that you can show the client a side-by-side comparison of the color in question, and then they can decide if they want to use that color.

And, at least in my Pantone imaging guide, they don't even show a 805 2X fluorescent to process conversion (my guess ~ because there is none).

Best Regards

ImageMakerGraphics

Certainly, fluorescent, metallic and out-of-gamut colors can only be approximated by 4C Process. It's good that you post this as a reminder. Any client who needs to use a process mix instead of the Pantone (wants to save money, Newprint or Magazine doesn't offer spot colors, etc.) would need to be warned well in advance that it's only an approximation and it could be a very poor one.

My only point was that one set of CMYK numbers for Pantone colors does not fit all print processes.

Cheers.