How the weekly knee movement tally works
Days that are hard on the knees do not look like much one day at a time. This tally takes the flights of stairs you go up and down in a day, the number of times you get up out of a chair, and how many days a week that pattern holds, then totals the week and the month.
The arithmetic is multiplication only: the daily counts times the days per week give the weekly total, and that times four gives the monthly figure. Because a month is treated as four weeks, the result labels say so. If both the flights and the sit-to-stand count are zero there is nothing to total, and the page says so instead.
This page does not work out how many times your body weight loads the knee, nor any arthritis risk. Those figures are not confirmed in an authoritative source, and no score or grade is produced. No ceiling for a sensible number of flights a day is offered either, so use the totals to compare one of your own weeks against another. Current as of October 2026, and not a medical diagnosis. A knee that swells, suddenly will not straighten, or gives way while you walk should be seen by a clinician.
Frequently Asked Questions
No. Load multiples for individual movements shift a great deal with how they are measured and are not confirmed in an authoritative source. This page only adds and multiplies the counts you enter.
Count them together. Going up three floors and back down is six flights. What matters is counting the same way each week, so pick a rule and keep it.
Because a month is treated as four weeks and the weekly total is multiplied by four. Real months are a little longer, and the fixed four-week basis keeps comparisons between months on the same footing.