How long do we have keep 301 for Google?

[ksmith29]

Suppose, I have created a 301 redirect in my site. So, how long do I have to keep it in order to keep my ranking same as before?

[batman]

Don't bother to remove it unless it is utmostly necessary. Keep it forever.

[brian]

Forever, may be the nearest answer. But after 5 years I don't think its completely necessary.

[master11]

Why do you want to remove them anyway? Keep them as long as you can.

[siva s]

It can take 6-months to a year for Google to fully recognize a site has moved. Plus you may have people finding old links and if those no longer have redirects, they may lead to a 404 page or a parked domain, which would result in a bad user experience.

[pragya00]

it can take sometimes for all, approx 6 month