⏳ 90/90 Decluttering Rule Tracker
The 90/90 rule suggests that if you haven't used an item in the last 90 days and don't expect to use it in the next 90 days, it may be time to let it go. Track your items and see which ones meet that threshold.
What the tracker actually tests
One comparison per row, against a fixed threshold:
days since last used >= 90 → Consider letting go
days since last used < 90 → Keep
The two example rows show the split: a blender at 400 days is flagged, a winter coat at 60 days is not. Exactly 90 counts as flagged, since the test is "90 or more".
The half of the rule you supply yourself
The 90/90 rule has two questions: have you used it in the past 90 days, and will you use it in the next 90? Only the first is arithmetic, so that is all this page checks. Everything flagged yellow is a prompt to answer the second question, not a verdict.
- Seasonal items break the test. Ask in July and your ski boots read 200 days. They fail the past-90 half and pass the future-90 half, so they stay.
- Insurance items break it too. Fire extinguisher, spare tyre, tool for one specific repair - not using these is the point.
- Duplicates rarely survive. The third vegetable peeler is flagged because there was no reason to reach past the first two.
Estimate the days rather than agonising over them. The gap between 100 and 140 changes nothing; the gap between 30 and 300 is the whole answer.
Frequently asked questions
What is the 90/90 rule for decluttering?
If you have not used something in the last 90 days and cannot see yourself using it in the next 90, let it go. It comes from Joshua Fields Millburn and Ryan Nicodemus, The Minimalists.
Does the 90/90 rule work for clothes?
Only within a season. Apply it as you pack a season away - anything you did not wear all summer is unlikely to be worn next summer.
What if I might need it one day?
Price the replacement. If it is cheap and easy to buy again, the space is worth more than the hedge; if it is costly, irreplaceable or a genuine safety item, keep it and stop counting days.