Work out habit streak instantly with clear inputs, formula shown and shareable results.
From 1 June to 4 September 2026 is 96 days, so three missed days leave 93 completed at 96.9% adherence and seven days short of a hundred. Adherence rate is the more useful measure than an unbroken streak, because it survives a missed day without resetting motivation to zero.
Days completed
completed = days since start - days missed
Adherence rate
rate = completed / total days x 100
No. Research on habit formation finds a single lapse has little effect; it is the abandonment after a lapse that does the damage.
Median around 66 days in Lally's study, but the range ran from 18 to over 250 depending on the behaviour's complexity.