Weighing your cat at home: record weight calmly and traceably

A single reading on the scales is easily forgotten. Weighing becomes more useful if you record when and how you measured. That way you can track changes and bring concrete information to your veterinary practice. For this you need a suitable scale, some preparation and a cat that can engage with the process. However, weight alone does not indicate whether a cat is healthy or how much food it needs.

Choose a suitable scale and a quiet place

A pet scale is one option for this purpose. Cats Protection points out that such scales can measure cats more accurately than human scales. Still check your device’s manual: what measurement range is intended, how should it be set up and when is the display considered readable? A fine display on its own is not proof that the measurement is correspondingly accurate.

A practical preparation is a quiet place at floor level with a firm, even surface. Anything weighed together counts towards the load on the scale. A box must therefore not exceed the permissible measurement range together with your cat. Use only a setup where nothing wobbles or tips.

Get to know it first, then weigh

You do not have to get a reading on the first try. Let your cat explore the scale first. Cats Protection describes that cats can learn to stand on a scale with positive rewards. Some prefer to stay on a familiar blanket or sit in a box.

Our practical recommendation: separate the familiarisation from the actual weighing. First reward voluntary approach or entry and end the exercise while your cat remains relaxed. If your cat walks away, do not pursue it. For suitable preparation with the travel box you can find further steps in our guide Getting your cat used to a carrier: training without pressure.

Weighing with a box or blanket: account for the empty weight

Cats Protection recommends subtracting the weight of any bedding or box that is weighed together. The following sequence translates this principle into a practical procedure:

1. Prepare everything: Place the empty box together with the blanket to be used later on the scale. The entire load must be carried by the scale. A box must not additionally rest on the floor.
2. Record the empty weight: Note it with its unit. If your device supports a tare function, you can instead, according to the instructions, set the empty box to zero. Remember which method you use.
3. Let the cat enter voluntarily: Keep the setup in view. Do not press on the box or support it with your hand when reading the display, because you will change the load on the scale by doing so. If it is not stable without holding, this setup is not suitable.
4. Transfer the value correctly: Without using tare: total weight minus empty weight equals the measured cat weight. With correctly used tare the empty weight is already accounted for. Do not subtract it again.
5. Mark unclear measurements: If the cat jumps down or the display remains unclear due to movement, do not note a seemingly reliable value. A pause is preferable to repeatedly holding the cat.

A small log instead of single reminders

For your notes we suggest these fields: date, time, weight with unit, scale used, method and particularities. For a box add “Tare used” or the subtracted empty weight. Also note a device change. That way it remains clear which values arose under similar conditions.

Record the value shown without adding extra decimal places. A questionable measurement may be left marked as "not usable". If you notice changes in eating, drinking or behaviour, note them separately. These are observations for the discussion with the practice, not an explanation for a weight change.

When to consult the veterinary practice

The scale provides a measurement, not a diagnosis. PDSA recommends seeking veterinary advice if weight loss is suspected; gradual losses can easily be overlooked in everyday life. Also discuss other unexplained weight changes with your practice. Do not wait for further weighings in cases of poor appetite or notable changes in general condition before contacting them. Do not base a reduction in food solely on a single figure.

Short checklist before weighing

• Scale set up according to the manual and measurement range checked?
• Box or blanket stable and fully on the scale?
• Empty weight or tare clearly determined?
• Cat relaxed enough for a voluntary attempt?
• Date, unit and method noted immediately?

Frequently asked questions

How often should I weigh my cat?

Agree a suitable schedule with your veterinary practice, especially if the weight is to be monitored because of an existing condition. This guide purposely does not specify a single interval for all cats. Existing veterinary instructions take precedence.

Can I stand on the bathroom scales with my cat?

The Animal Welfare Foundation describes this option: total weight minus your own weight. It also points out possible inaccuracy with small animals. Use this method only if your cat remains relaxed in your arms. Do not treat the result as a gram-accurate measurement.

What if I can’t get a calm weighing at home?

Stop the attempt. Ask your practice for a suitable option; Cats Protection mentions weighing appointments with pet scales in many practices. For practicing at home you can later start again with voluntary approach exercises.

Sources and editorial status

Status: 19.10.2026. The organisational preparation, sequence and log fields are editorial practical tips. Factual bases:

• Cats Protection: Feeding and obesity, 2025 edition – Weighing, box or blanket, positive habituation and availability of weighing services in practices.
• Animal Welfare Foundation: Feeding and exercise for a happy and healthy pet – Weighing at home and limitations of scales for small animals.
• PDSA: Weight loss in cats – veterinary investigation of weight loss.
• Cats Protection: Cat obesity – individual assessment rather than judging by weight alone.