Dose calculator · Paracetamol (acetaminophen)

Paracetamol (acetaminophen) dose calculator by weight

Every weight from 5 to 40 kg, in milligrams and in millilitres according to the strength of your bottle. Fixed table from the AEPap dosing guide — no AI. Always check the strength printed on your own bottle: it changes by country and by presentation.

Medicine (generic or brand)

Weight (kg)

Age

Or type what your bottle says (optional)

Paracetamol (acetaminophen) 20 mg/ml, Paracetamol (acetaminophen) 24 mg/ml, Paracetamol (acetaminophen) 25 mg/ml, Paracetamol (acetaminophen) 30 mg/ml, Paracetamol (acetaminophen) 32 mg/ml, Paracetamol (acetaminophen) 40 mg/ml, Paracetamol (acetaminophen) 50 mg/ml, Paracetamol (acetaminophen) 100 mg/ml or Paracetamol (acetaminophen) 200 mg/ml: not the same thing

Paracetamol (acetaminophen) comes in 9 strengths. The 200 mg/ml one has 10 times as much paracetamol (acetaminophen) in each millilitre as the 20 mg/ml one: the same millilitres give 10 times the dose.

For a 10 kg child (150 mg):

Paracetamol (acetaminophen) 20 mg/ml (drops 100 mg/5 ml)7.5 ml
Paracetamol (acetaminophen) 24 mg/ml (syrup 120 mg/5 ml)6.2 ml
Paracetamol (acetaminophen) 25 mg/ml (syrup 125 mg/5 ml)6 ml
Paracetamol (acetaminophen) 30 mg/ml (syrup 150 mg/5 ml (3 %))5 ml
Paracetamol (acetaminophen) 32 mg/ml (syrup 160 mg/5 ml)4.6 ml
Paracetamol (acetaminophen) 40 mg/ml (syrup 200 mg/5 ml (4 %))3.7 ml
Paracetamol (acetaminophen) 50 mg/ml (syrup 250 mg/5 ml)3 ml
Paracetamol (acetaminophen) 100 mg/ml (drops 100 mg/ml)1.5 ml
Paracetamol (acetaminophen) 200 mg/ml (drops 200 mg/ml)0.7 ml

⚠️ Before measuring, look at how many mg per ml the box says. It is the most common way to get a dose wrong at home.

Every 4–6 hours, and never more doses in 24 hours than the last column says.

Weight	Dose	syrup 120 mg/5 ml	syrup 125 mg/5 ml	syrup 150 mg/5 ml (3 %)	syrup 160 mg/5 ml	syrup 200 mg/5 ml (4 %)	syrup 250 mg/5 ml	drops 100 mg/5 ml	drops 100 mg/ml	drops 200 mg/ml	Max. / 24 h
5 kg	75 mg	3.1 ml	3 ml	2.5 ml	2.3 ml	1.8 ml	1.5 ml	3.7 ml	0.7 ml	0.3 ml	4
6 kg	90 mg	3.7 ml	3.6 ml	3 ml	2.8 ml	2.2 ml	1.8 ml	4.5 ml	0.9 ml	0.4 ml	4
7 kg	105 mg	4.3 ml	4.2 ml	3.5 ml	3.2 ml	2.6 ml	2.1 ml	5.2 ml	1 ml	0.5 ml	4
8 kg	120 mg	5 ml	4.8 ml	4 ml	3.7 ml	3 ml	2.4 ml	6 ml	1.2 ml	0.6 ml	4
9 kg	135 mg	5.6 ml	5.4 ml	4.5 ml	4.2 ml	3.3 ml	2.7 ml	6.7 ml	1.3 ml	0.6 ml	4
10 kg	150 mg	6.2 ml	6 ml	5 ml	4.6 ml	3.7 ml	3 ml	7.5 ml	1.5 ml	0.7 ml	4
11 kg	165 mg	6.8 ml	6.6 ml	5.5 ml	5.1 ml	4.1 ml	3.3 ml	8.2 ml	1.6 ml	0.8 ml	4
12 kg	180 mg	7.5 ml	7.2 ml	6 ml	5.6 ml	4.5 ml	3.6 ml	9 ml	1.8 ml	0.9 ml	4
13 kg	195 mg	8.1 ml	7.8 ml	6.5 ml	6 ml	4.8 ml	3.9 ml	9.7 ml	1.9 ml	0.9 ml	4
14 kg	210 mg	8.7 ml	8.4 ml	7 ml	6.5 ml	5.2 ml	4.2 ml	10.5 ml	2.1 ml	1 ml	4
15 kg	225 mg	9.3 ml	9 ml	7.5 ml	7 ml	5.6 ml	4.5 ml	11.2 ml	2.2 ml	1.1 ml	4
16 kg	240 mg	10 ml	9.6 ml	8 ml	7.5 ml	6 ml	4.8 ml	12 ml	2.4 ml	1.2 ml	4
17 kg	255 mg	10.6 ml	10.2 ml	8.5 ml	7.9 ml	6.3 ml	5.1 ml	12.7 ml	2.5 ml	1.2 ml	4
18 kg	270 mg	11.2 ml	10.8 ml	9 ml	8.4 ml	6.7 ml	5.4 ml	13.5 ml	2.7 ml	1.3 ml	4
19 kg	285 mg	11.8 ml	11.4 ml	9.5 ml	8.9 ml	7.1 ml	5.7 ml	14.2 ml	2.8 ml	1.4 ml	4
20 kg	300 mg	12.5 ml	12 ml	10 ml	9.3 ml	7.5 ml	6 ml	15 ml	3 ml	1.5 ml	4
21 kg	315 mg	13.1 ml	12.6 ml	10.5 ml	9.8 ml	7.8 ml	6.3 ml	15.7 ml	3.1 ml	1.5 ml	4
22 kg	330 mg	13.7 ml	13.2 ml	11 ml	10.3 ml	8.2 ml	6.6 ml	16.5 ml	3.3 ml	1.6 ml	4
23 kg	345 mg	14.3 ml	13.8 ml	11.5 ml	10.7 ml	8.6 ml	6.9 ml	17.2 ml	3.4 ml	1.7 ml	4
24 kg	360 mg	15 ml	14.4 ml	12 ml	11.2 ml	9 ml	7.2 ml	18 ml	3.6 ml	1.8 ml	4
25 kg	375 mg	15.6 ml	15 ml	12.5 ml	11.7 ml	9.3 ml	7.5 ml	18.7 ml	3.7 ml	1.8 ml	4
26 kg	390 mg	16.2 ml	15.6 ml	13 ml	12.1 ml	9.7 ml	7.8 ml	19.5 ml	3.9 ml	1.9 ml	4
27 kg	405 mg	16.8 ml	16.2 ml	13.5 ml	12.6 ml	10.1 ml	8.1 ml	20.2 ml	4 ml	2 ml	4
28 kg	420 mg	17.5 ml	16.8 ml	14 ml	13.1 ml	10.5 ml	8.4 ml	21 ml	4.2 ml	2.1 ml	4
29 kg	435 mg	18.1 ml	17.4 ml	14.5 ml	13.5 ml	10.8 ml	8.7 ml	21.7 ml	4.3 ml	2.1 ml	4
30 kg	450 mg	18.7 ml	18 ml	15 ml	14 ml	11.2 ml	9 ml	22.5 ml	4.5 ml	2.2 ml	4
31 kg	465 mg	19.3 ml	18.6 ml	15.5 ml	14.5 ml	11.6 ml	9.3 ml	23.2 ml	4.6 ml	2.3 ml	4
32 kg	480 mg	20 ml	19.2 ml	16 ml	15 ml	12 ml	9.6 ml	24 ml	4.8 ml	2.4 ml	4
33 kg	495 mg	20.6 ml	19.8 ml	16.5 ml	15.4 ml	12.3 ml	9.9 ml	24.7 ml	4.9 ml	2.4 ml	4
34 kg	510 mg	21.2 ml	20.4 ml	17 ml	15.9 ml	12.7 ml	10.2 ml	25.5 ml	5.1 ml	2.5 ml	4
35 kg	525 mg	21.8 ml	21 ml	17.5 ml	16.4 ml	13.1 ml	10.5 ml	26.2 ml	5.2 ml	2.6 ml	4
36 kg	540 mg	22.5 ml	21.6 ml	18 ml	16.8 ml	13.5 ml	10.8 ml	27 ml	5.4 ml	2.7 ml	4
37 kg	555 mg	23.1 ml	22.2 ml	18.5 ml	17.3 ml	13.8 ml	11.1 ml	27.7 ml	5.5 ml	2.7 ml	4
38 kg	570 mg	23.7 ml	22.8 ml	19 ml	17.8 ml	14.2 ml	11.4 ml	28.5 ml	5.7 ml	2.8 ml	4
39 kg	585 mg	24.3 ml	23.4 ml	19.5 ml	18.2 ml	14.6 ml	11.7 ml	29.2 ml	5.8 ml	2.9 ml	4
40 kg	600 mg	25 ml	24 ml	20 ml	18.7 ml	15 ml	12 ml	30 ml	6 ml	3 ml	4

⚠️ The grey rows are below the minimum weight for Paracetamol (acetaminophen): do not give it without medical advice. Under 3 months, no medicine without a prescription.

The guide publishes a band of 10–15 mg/kg per dose. This table uses 15 mg/kg: it is the dose the published daily maximum is built from, and the one the manufacturers' leaflets give. A lower dose within the band is also correct.

Under 3 months, only if a doctor has told you to. Do not combine with other products that also contain paracetamol (cold remedies).

AEPap — Guía rápida de dosificación práctica en pediatría (3.ª ed.), tabla analgésicos/antitérmicos.

What parents ask about Paracetamol (acetaminophen)

How much Paracetamol (acetaminophen) for a child of 10, 15 or 20 kg?

The dose goes by weight, never by age alone. For Paracetamol (acetaminophen):

10 kg 150 mgsyrup 120 mg/5 ml: 6.2 mlsyrup 125 mg/5 ml: 6 mlsyrup 150 mg/5 ml (3 %): 5 mlsyrup 160 mg/5 ml: 4.6 mlsyrup 200 mg/5 ml (4 %): 3.7 mlsyrup 250 mg/5 ml: 3 mldrops 100 mg/5 ml: 7.5 mldrops 100 mg/ml: 1.5 mldrops 200 mg/ml: 0.7 ml
15 kg 225 mgsyrup 120 mg/5 ml: 9.3 mlsyrup 125 mg/5 ml: 9 mlsyrup 150 mg/5 ml (3 %): 7.5 mlsyrup 160 mg/5 ml: 7 mlsyrup 200 mg/5 ml (4 %): 5.6 mlsyrup 250 mg/5 ml: 4.5 mldrops 100 mg/5 ml: 11.2 mldrops 100 mg/ml: 2.2 mldrops 200 mg/ml: 1.1 ml
20 kg 300 mgsyrup 120 mg/5 ml: 12.5 mlsyrup 125 mg/5 ml: 12 mlsyrup 150 mg/5 ml (3 %): 10 mlsyrup 160 mg/5 ml: 9.3 mlsyrup 200 mg/5 ml (4 %): 7.5 mlsyrup 250 mg/5 ml: 6 mldrops 100 mg/5 ml: 15 mldrops 100 mg/ml: 3 mldrops 200 mg/ml: 1.5 ml

How often, and how many times a day?

Every 4–6 hours. For a child of 15 kg that is at most 4 doses in 24 hours.

What if I don't know what the child weighs?

Age is not enough: two children of the same age can be several kilos apart, and this dose is calculated per kilo. Weigh the child, or ask at the pharmacy. PediBot will not give a figure from age alone.

From what age can Paracetamol (acetaminophen) be given?

Under 3 months, only if a doctor has told you to. Do not combine with other products that also contain paracetamol (cold remedies).

Open the calculator Ask PediBot about this

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