The back lever is usually the first lever people get: the steps are a German hang and skin the cats, then tuck, advanced tuck, straddle and full. Straight arms carry the load, so the plan keeps it to three skill sessions a week.
No source puts a number of weeks on it, so this estimate is wide and leans on our front lever data. Your re-tests every two weeks correct it to your actual pace.
Estimate your date
How long until a 5-second back lever?
Tap one value in each row to see your estimate.
How the estimate works
Each rung of the ladder has an expected duration at three sessions a week: a fast case, a typical case and a slow case.
Your numbers decide where you start. You skip a rung only if what you can do today already clears it.
The estimate is the sum of the rungs ahead of you, adjusted for your days per week. It is never closer than the sum of the fast cases.
If you're below the starting standard, the first rung builds it, and the time grows with the gap.