Last updated: June 18, 2026
Cat Quality of Life Calculator
Creators
Dharmendra SinghReviewers
Creators
Dharmendra SinghReviewers
Quick Answer
The Cat Quality of Life Calculator uses the veterinarian-developed HHHHHMM scale (Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and More good days than bad), scoring each criterion 0–10 for a total out of 70. A total above 35 generally indicates an acceptable quality of life, 56+ is good, and below 35 suggests it is time to discuss comfort care and humane options with a veterinarian. It is an educational aid, not a substitute for professional veterinary judgement.
To assess your cat's quality of life, score seven areas — Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and more good days than bad — each from zero to ten. A total above 35 out of 70 generally means an acceptable quality of life. Always discuss the result with your veterinarian.
Key Takeaways
- The HHHHHMM scale scores 7 areas (Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, More good days) from 0–10, for a total out of 70
- A total above 35/70 generally indicates an acceptable quality of life; 56+ is good, below 35 is poor
- Trends over time and a good-days diary matter more than any single score
- A single severe problem — like uncontrolled pain — can outweigh an otherwise good total
- This tool supports a conversation with your veterinarian; it is not a substitute for professional advice
Creators
Dharmendra SinghReviewers
Creators
Dharmendra SinghReviewers
Formula
Total Score = Hurt + Hunger + Hydration + Hygiene + Happiness + Mobility + More good days (each 0–10, max 70)
Where:
- QoL=Total Quality of Life score (0–70)(/70)
- S_i=Score for each HHHHHMM criterion(0–10)
Worked Examples
Comfortable Senior Cat
A 14-year-old cat with managed arthritis, eating and engaging well.
- 1Score each criterion 0–10
- 2Total = 8 + 9 + 9 + 8 + 8 + 6 + 9 = 57
- 357 ≥ 56 → Good quality of life
- 4Continue care; support mobility (ramps, low-sided litter box) and re-assess regularly
Cat with Chronic Illness (borderline)
A cat with kidney disease, eating less and slowing down but still enjoying some days.
- 1Total = 7 + 5 + 5 + 7 + 6 + 6 + 6 = 42
- 235 ≤ 42 < 56 → Acceptable but borderline
- 3Work with your vet on appetite, hydration (subcutaneous fluids) and pain control
- 4Re-assess every few days and keep a good-days diary
Cat in Decline
A cat with advanced disease, not eating, hiding, and having more bad days than good.
- 1Total = 4 + 3 + 3 + 4 + 3 + 4 + 3 = 24
- 224 < 35 → Quality of life appears poor
- 3Speak with your veterinarian soon about comfort care and humane options
- 4This score is a guide to support the conversation, not a verdict
Introduction
Caring for a seriously ill or elderly cat is one of the hardest things a pet owner faces. The Cat Quality of Life Calculator gives you an objective, compassionate way to assess how your cat is really doing, using the veterinarian-developed HHHHHMM Quality of Life Scale created by Dr. Alice Villalobos. You score seven areas — Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and More good days than bad — each from 0 to 10. A total above 35 out of 70 generally indicates an acceptable quality of life. This tool is meant to support an honest conversation with your veterinarian — it is not a substitute for professional veterinary judgement. For day-to-day care, see our cat calorie calculator and cat BMI calculator.
How the HHHHHMM Quality of Life Scale Works
Dr. Alice Villalobos, a veterinary oncologist, created the HHHHHMM scale to help owners and vets make end-of-life decisions based on observation rather than emotion alone. You rate each of the seven criteria from 0 (worst) to 10 (best); the calculator adds them into a score out of 70.
Score each of the seven criteria honestly from 0 to 10
The total ranges from 0 (lowest) to 70 (highest)
A total above 35/70 is generally considered an acceptable quality of life
No single 'right' answer — the score guides a conversation, it does not decide for you
Re-assess regularly; trends over time matter more than a single score
The Seven Criteria Explained
Each letter of HHHHHMM stands for an area of welfare. Here is what to look for when scoring each one for your cat.
| Criterion | What to Assess | Low score (0–3) | High score (8–10) |
|---|---|---|---|
| Hurt | Pain control and breathing | Uncontrolled pain or laboured breathing | Comfortable, breathing easily |
| Hunger | Eating enough to maintain weight | Refuses food, needs force-feeding | Eats willingly and well |
| Hydration | Adequate fluid intake | Dehydrated, needs supplemental fluids | Well hydrated, drinks normally |
| Hygiene | Staying clean, free of sores | Soiled coat, pressure sores | Clean, groomed, dry |
| Happiness | Interest, interaction, joy | Withdrawn, hiding, unresponsive | Engaged, purring, enjoying life |
| Mobility | Ability to move and reach essentials | Cannot move without help | Moves around freely |
| More good days | Good days vs bad days this week | Mostly bad days | Almost all good days |
Interpreting Your Cat's Score
The total score places your cat in one of three broad bands. These are guides to help you and your veterinarian, not absolute cut-offs — a sudden drop in a single criterion (for example, uncontrolled pain) can outweigh a 'good' total.
| Total Score | Assessment | What It Suggests |
|---|---|---|
| 56–70 | Good | Comfortable and enjoying life — continue care and re-assess regularly |
| 35–55 | Acceptable / borderline | Acceptable but needs attention — improve weak areas with your vet, re-assess often |
| Below 35 | Poor / declining | Talk with your vet soon about comfort (hospice) care and humane options |
If even one criterion is persistently very low — especially uncontrolled pain or inability to breathe — discuss it with your veterinarian regardless of the total score.
Hurt: Recognising and Managing Pain in Cats
Pain is weighted heavily because cats are masters at hiding it — by instinct, a sick cat conceals weakness. Knowing the subtle signs helps you score 'Hurt' accurately and get help.
Subtle pain signs: hiding, reduced grooming, hunched posture, sitting still, decreased appetite
A drop in jumping or climbing, or sleeping in unusual low places, often signals pain
Changes in facial expression (squinted eyes, flattened ears) can indicate discomfort
Purring is not proof of comfort — cats also purr when stressed or in pain
Never give human painkillers — paracetamol/acetaminophen and ibuprofen are deadly to cats
Ask your vet about cat-safe pain relief (e.g. gabapentin, robenacoxib, buprenorphine)
If pain cannot be controlled despite veterinary treatment, that single factor can outweigh otherwise good scores — talk to your vet promptly.
Hunger, Hydration & Hygiene: Daily Comfort
These three criteria cover the basics of physical comfort. Small interventions can meaningfully raise a borderline score.
- Hunger:
warm the food, offer strong-smelling favourites, or ask about appetite stimulants (mirtazapine)
- Hydration:
provide water fountains and wet food; your vet can teach you to give subcutaneous fluids at home
- Hygiene:
keep a low-sided, easy-access litter box close by; gently clean a cat that can no longer groom
Watch for pressure sores in cats that lie down most of the time — provide soft, dry bedding
Weigh your cat weekly; ongoing weight loss is an important warning sign
Happiness & Mobility: Joy and Independence
Quality of life is not only about the absence of suffering — it is about the presence of joy. Happiness and mobility measure whether your cat can still do, and enjoy, the things that matter to them.
Happiness: does your cat still seek affection, watch birds, respond to your voice, or settle on your lap?
Loss of interest in favourite people, toys, or sunny spots is a meaningful change
Mobility: can your cat reach food, water and the litter box without help?
Support mobility with ramps, steps, non-slip mats and low-entry litter trays
A cat that can no longer move to eat, drink, or toilet independently has a major welfare concern
More Good Days Than Bad: Keeping a Diary
The final 'M' asks a simple but powerful question: over the past week, were there more good days than bad? Memory is unreliable and emotionally coloured, so keeping a written record gives you an honest picture of the trend.
Each evening, mark the day as 'good' or 'bad' with a one-line note about why
A good day: comfortable, eating, engaging, doing something they enjoy
A bad day: pain, not eating, hiding, accidents, distress
When bad days consistently outnumber good days, quality of life is declining
Bring the diary to your veterinary appointment — it makes conversations clearer and easier
Photos and short videos on good and bad days can help you and your vet see changes that are hard to judge day to day.
Making the Decision: Talking With Your Veterinarian
This calculator cannot — and should not — make the decision for you. Its purpose is to turn difficult feelings into clear observations you can share with your veterinary team, who can examine your cat, manage symptoms, and guide you with compassion.
Bring your scores and good-days diary to the appointment
Ask about palliative (hospice) care to keep your cat comfortable for as long as possible
Discuss what a 'good death' looks like and the options for humane euthanasia
It is often kinder to act a little early than a little late — ask your vet's honest opinion
Look after yourself too: anticipatory grief is real, and many clinics offer pet-loss support resources
There is no perfect score that means 'now'. The right time is a personal decision made with your veterinarian, balancing this assessment with your cat's medical condition and your knowledge of your cat.
Quick Reference Card
Cat Quality of Life — Quick Reference
Quick reference • Cat Quality of Life Calculator
Total = Hurt + Hunger + Hydration + Hygiene + Happiness + Mobility + More good days (each 0–10)Valid range: Above 35/70 = acceptable quality of life
Common Values
⚠ Watch Out
- •Never give cats human painkillers (paracetamol/ibuprofen are fatal)
- •One severe problem (e.g. uncontrolled pain) can outweigh a good total
- •The score is a guide, not a verdict — consult your veterinarian
- •Re-assess regularly; trends matter more than one score
Pro Tips
- →Keep a daily good-days vs bad-days diary
- →Score honestly — over-optimism delays needed care
- →Bring scores and notes to your vet appointment
- →Small changes (ramps, fluids, appetite stimulants) can raise borderline scores
FAQs
What is a good quality of life score for a cat?
On the HHHHHMM scale (out of 70), a total above 35 is generally considered an acceptable quality of life, and 56 or above suggests a good quality of life. Below 35 suggests quality of life is poor and it's time to talk with your veterinarian about comfort care and humane options. Trends over time matter more than any single score.
What does HHHHHMM stand for?
HHHHHMM is the seven-part Quality of Life Scale developed by veterinary oncologist Dr. Alice Villalobos: Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and More good days than bad. Each is scored from 0 (worst) to 10 (best), giving a total out of 70.
How do I know if it's time to euthanize my cat?
There is no single number that decides this. A consistently low score (especially below 35/70), more bad days than good, uncontrolled pain, or inability to eat, move, or stay clean are all signs that quality of life is failing. Use this assessment and your good-days diary to have an honest conversation with your veterinarian, who can examine your cat and guide you compassionately.
How often should I assess my cat's quality of life?
For a cat with a chronic or terminal illness, re-assess every few days to weekly, and any time something changes. Frequent scoring reveals the trend — whether your cat is stable, improving with treatment, or declining — which is far more informative than a single snapshot.
How can I tell if my cat is in pain?
Cats hide pain instinctively. Watch for hiding, reduced grooming, a hunched posture, reluctance to jump or climb, decreased appetite, squinted eyes, or flattened ears. Purring does not rule out pain — cats also purr when stressed. Never give human painkillers; paracetamol (acetaminophen) and ibuprofen are fatal to cats. Ask your vet about cat-safe options.
Can my cat's quality of life improve?
Yes, often. Many borderline scores improve with good veterinary care — better pain control, appetite stimulants, subcutaneous fluids for hydration, anti-nausea medication, and home adjustments like ramps and low-sided litter boxes. Re-assess after starting treatment to see whether the score rises.
What is hospice or palliative care for cats?
Feline hospice (palliative) care focuses on keeping a cat with an incurable illness as comfortable as possible, rather than curing the disease. It includes pain management, nutritional and hydration support, a calm environment, and close monitoring of quality of life. Your veterinarian can design a plan tailored to your cat.
Is this calculator a substitute for veterinary advice?
No. This tool is an educational aid to help you observe and discuss your cat's welfare objectively. Only a veterinarian can examine your cat, diagnose and treat conditions, manage pain, and guide end-of-life decisions. Always use the score as a starting point for a professional conversation.
Why is 'more good days than bad' one of the criteria?
It captures the overall balance of your cat's experience in a way single-moment measures cannot. A cat may have some good moments, but if bad days — marked by pain, not eating, hiding, or distress — consistently outnumber good ones, overall quality of life is declining. Keeping a daily diary makes this honest and clear.
Should I score based on today or the whole week?
Score Hurt, Hunger, Hydration, Hygiene, Happiness and Mobility based on your cat's typical state over the last day or two, and score 'More good days than bad' based on the past week. This balances current condition with the recent trend. Re-assess regularly to track changes.
My cat scored well but seems to be suffering — what should I do?
Trust your observations and contact your veterinarian. The total score is a guide, not a verdict, and a single severe problem — such as uncontrolled pain or difficulty breathing — can outweigh otherwise good scores. You know your cat best; a low score in even one critical area is worth a veterinary conversation.