Levels , Live to Online?

I haven't been for several months (due to health) but sometimes I go play a live $65 tournament at Winstar Casino on the TX-OK border. Starts with 7,000 chips with 20 minute blinds. We all know you can play many more hands online than live. My question is, 20 minute live blinds would equal what time level playing online?

Hope you can figure out what I'm trying to ask.

Those blinds are double what we play in most online tourneys at least in the free rolls or micro tourneys that I play. Basically cut the levels in half for live play compared to online play? Did I get that right with what you are saying?

I play a ton more online than I do live for two reasons. 1. I can play for free or very little and still have fun for me. 2. Health reasons for me too.