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Calcimator

Activities of Daily Living Calculator

Katz ADL Index and Lawton IADL Scale for comprehensive functional independence assessment.

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Step 1 of 5

How to Use This Calculator
  1. Score each Basic ADL (0 = requires assistance, 1 = independent): bathing, dressing, toileting, transferring, continence, and feeding.
  2. Score each Instrumental ADL: phone use, shopping, food preparation, housekeeping, laundry, and medication management.
  3. Review the Katz ADL Score (0–6) and Lawton IADL Score (0–8).
  4. Check the overall Functional Independence Level to classify care needs.
  5. Use the scores to guide care planning, discharge disposition, and level of care determination.

What each input means

Bathing
Bathing independence.
Dressing
Dressing independence.
Toileting
Toileting independence.
Transferring
Getting in/out of bed or chair.
Continence
Continence status.
Feeding
Eating independence.
Phone Use
Can use phone independently.
Shopping
Can shop independently.
Food Preparation
Can prepare meals independently.
Housekeeping
Can do housework independently.
Laundry
Does own laundry.
Transportation
Travels independently.
Medication Management
Manages medications independently.
Finances
Manages finances independently.

What each result means

Katz ADL score (0-6)
Basic ADL independence: 6 = fully independent, 0 = fully dependent.
Lawton IADL score (0-8)
Instrumental ADL: 8 = fully independent, 0 = fully dependent.
Combined score (0-14)
Total functional independence across all ADL and IADL items.
Independence level
Percentage of all activities performed independently.
Care level (1-4)
1 = Independent, 2 = Assisted living, 3 = Skilled nursing, 4 = Full-time care.
Est. weekly care hours
Approximate hours of assistance needed per week.
Fall risk (1-3)
1 = Low, 2 = Moderate, 3 = High fall risk based on ADL dependency.
Hospitalization risk
Relative risk score for hospitalization (0-100) based on functional status.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Bathing = 1, Dressing = 1, Toileting = 1, Transferring = 1 = 14 input(s) provided
  2. Calculate Katz ADL score
    Katz ADL score
    6 = 6
  3. Calculate Lawton IADL score
    Lawton IADL score
    8 = 8
  4. Calculate Combined score
    Combined score
    14 = 14

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