This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
Medications & Dosing
18 calculators · mg/kg, mg/m², dilution, infusion, maximum doses, emergency medications, syringe pump
Here you will find calculators for drug dosing and preparation in pediatrics: doses from mg/kg and mg/m², conversion of mg to ml, dilution, infusion rate and syringe pump. Also included are body surface area according to Mosteller, DuBois and Haycock, the maximum dose check, epinephrine in anaphylaxis, PALS emergency drugs according to ERC PLS 2025 and AHA PALS 2025, the maximum dose of local anesthetics according to ESRA/ASRA 2018 and renal dose adjustment according to Dettli. The calculators are intended for the preparation and verification of dosages. Each calculator states its formula and sources.
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Body surface area (BSA)
From height and weight according to Mosteller, DuBois and Haycock -
Syringe pump calculator
Infusion rate in ml/h from dose, weight and syringe concentration – or dose from infusion rate; unitless or with a stored preparation -
mg/kg single dose
Single dose from mg/kg and body weight – with volume and check against the maximum dose -
mg/kg/day → single doses
Daily dose from mg/kg/day and weight, divided into the doses per day – with volume per dose -
mg/m² body surface area dose
Dose from mg/m² and body surface area (Mosteller, DuBois, Haycock) from height and weight -
mg → ml dosing calculator
From dose in mg and preparation strength, the volume in ml (syrup, solution, ampule) -
ml → mg active ingredient calculator
From the volume administered and preparation strength, the amount of active ingredient – and mg/kg if the weight is known -
Daily dose → single dose
Divide the daily dose into doses – single dose, interval, volume -
Concentration calculator (mg/ml or IU/ml)
From amount of active ingredient and volume: mg/ml, µg/ml, percent and ratio 1:X -
Dilution calculator
C1 × V1 = C2 × V2 – stock solution and diluent for a target concentration -
Infusion/drop calculator
Infusion rate in ml/h and drops/min from volume and time – or duration from rate -
Amount of medication for the duration of therapy
How much syrup, solution or tablets are needed for the entire therapy – e.g. syrup for 7 days -
Ampoule/vial requirement
How many ampoules or vials a dose requires – with volume to draw up and wastage -
Maximum dose check
Check the planned dose against the maximum dose per administration and per day – weight-based and absolute -
Epinephrine in anaphylaxis by weight
0.01 mg/kg i.m. (max. 0.5 mg), auto-injector step 150/300/500 µg and fluid bolus per EAACI 2021 and AWMF 061-025 -
PALS emergency medications by weight
Epinephrine, amiodarone, lidocaine, adenosine, atropine, glucose, calcium, bicarbonate, magnesium – doses according to ERC 2025 and AHA 2025 -
Local anesthetic maximum dose
Maximum doses for bupivacaine, levobupivacaine, ropivacaine by technique (ESRA/ASRA 2018) – mg and ml per concentration -
Renal dose adjustment
Dose or interval according to Dettli from GFR and extrarenal elimination fraction Q0
Frequently asked questions
How do I calculate the single dose from mg/kg and the volume?
The mg/kg single dose calculator computes the single dose in mg from the dosage and body weight, optionally also the volume to be given from the preparation strength. For a daily dose, use mg/kg/day → single doses.
How do I calculate the infusion rate of a syringe pump?
The syringe pump calculator determines the infusion rate in ml/h from the dose unit, syringe concentration and body weight. Conversely, it shows the current dose from an infusion rate. The drop rate for infusions is provided by the infusion/drop calculator.
How do I dose epinephrine in anaphylaxis by weight?
The epinephrine in anaphylaxis by weight calculator computes the intramuscular dose at 0.01 mg/kg of the 1 mg/ml solution, maximum 0.5 mg, with repetition after 5 to 10 minutes, and states the appropriate autoinjector strength.