Frailty Index Calculator

Your details

Count of health deficits the person currently has from your assessed list. Each deficit scores 1 (or a fractional value if partially present).
Total number of deficit items on your assessment list. Research recommends at least 30 items for reliable risk estimation.
Used to project the FI trajectory over the next 10 years using the observed population accumulation rate of about 0.03 per year on a log scale (roughly 3% relative growth per year). Leave at 0 to skip the projection.
years
Frailty Index (FI)Pre-frail
0.15

Deficits present divided by total deficits assessed (0-1 scale)

FI as percentage0.2%
Frailty categoryPre-frail
Deficits to next category3 deficits to reach "Frail"
Est. years to next category~11.2 yrs at avg rate
Projected FI in 10 years0.202
0.15
Robust<0.1Pre-frail0.1-0.21Frail0.21-0.4Severely frail0.4+

FI 0.150 - Pre-frail

  • Your Frailty Index is 0.150 (15.0%), calculated from 6 deficits present out of 40 assessed.
  • A pre-frail score (0.10-0.21) signals early deficit accumulation. This is a critical window: targeted exercise, nutrition optimisation, and medication review can slow or reverse progression.
  • Deficits accumulate at roughly 3% per year on a log scale, so the projected FI in 10 years is 0.150 x e^(0.03 x 10) = 0.202, placing in the "Pre-frail" range.
  • The FI is a screening tool. A full clinical frailty assessment by a geriatrician or trained clinician is needed before clinical decisions are made.

Next stepAsk your clinician about a comprehensive geriatric assessment (CGA) and discuss resistance exercise or a structured prehabilitation programme.

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