How much formula per bottle
How many millilitres of formula a day and per bottle, based on your baby's weight and number of feeds.
How it works
Common guideline (Appert's rule) for babies aged 2 weeks to 6 months: formula per day ≈ weight in grams ÷ 10 + 250 ml, up to about 1 litre. Every baby's appetite is different: follow their hunger cues and your paediatrician's advice.
Results are for guidance only and do not replace professional advice.
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Worked example
With the default values:
- Baby's weight (kg)5
- Age (weeks)10
- Bottles per day6
you get:
- Per bottle (about)130 ml
- Formula per day750 ml
- Bottles per day6
- Usual for this age5–6 feeds
Frequently asked questions
How does the “How much formula per bottle” tool work?
Common guideline (Appert's rule) for babies aged 2 weeks to 6 months: formula per day ≈ weight in grams ÷ 10 + 250 ml, up to about 1 litre. Every baby's appetite is different: follow their hunger cues and your paediatrician's advice.
What do I need to enter?
Just fill in: baby's weight, age, bottles per day. The result updates as you type.
Can you give an example?
Baby's weight (kg): 5; Age (weeks): 10; Bottles per day: 6 → Per bottle (about): 130 ml; Formula per day: 750 ml.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.