# N to HO scale ratio ?

Discussion in 'FAQs' started by fran1942, May 10, 2006.

1. ### fran1942Member

Hello, I need to convert a structure from HO to N scale.
Can someone please tell me the ratio or percentage adjustment I will need to make to my plans.
Thank you.
2. ### Russ BellinisActive Member

Ho scale is 1/87, n scale is 1/160 so it is just slightly less than 1/2 of ho. If you double the size of the n scale structure you will be close. Do you have n scale plans? If you do get a scale rule from your local hobby shop or order on line. Scale rules generally have measurements in ho, n, s, and o scales. Measure your plans with the n scale rule and it will translate into feet and inches. Take the same feet and inches measurement on the ho scale rule and you can make ho scale plans.
3. ### 60103Pooh Bah

The ratio is 87/160 or 54.375% (if you use a photo reduction).
4. ### Russ BellinisActive Member

Thanks, I didn't think to express it as a ratio. I also misread his original post. For some reason, I got it in my head that he wanted to take n scale plans and convert them to ho.
5. ### MasonJarIt's not rocket surgery

The title of the thread asks for N to HO, but the post asks for HO to N... Either way, now we're covered... :thumb:

Andrew