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Kids Calculators

Little tools for the questions that come up at home — exactly how old they are today, what colour those two paints make, and how the evening might fit together.

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A note on the growth and sleep tools

The teething, sleep and milestone calculators show broad typical ranges, gathered from general public guidance. They are for curiosity and planning, nothing more.

They are not medical advice and cannot tell you whether anything is wrong. Children vary enormously and healthy development covers a very wide span. If you have any concern about your child's teeth, sleep, growth or development, speak to your doctor, health visitor or dentist — they know your child and we do not.