Prednisolone Dose Calculator (Pediatrics)
Enter weight and dosing details to estimate daily dose, per-dose amount, and liquid volume.
How this prednisolone pediatric dose calculator helps
Prednisolone is commonly dosed by body weight in children. In real practice, prescribers then apply practical rules like maximum daily dose limits, split dosing schedules, and formulation concentration. This tool combines those steps in one place so you can quickly estimate:
- Weight-converted dose in mg/day
- Per-dose amount in mg
- Liquid volume per dose in mL
- Total volume needed for the full course
Typical pediatric reference ranges (examples)
Actual dosing depends on diagnosis, severity, age, prior therapy, and local guidelines. These values are common examples only.
| Indication | Example dose range | Common max | Typical duration |
|---|---|---|---|
| Asthma exacerbation | 1–2 mg/kg/day | 60 mg/day | 3–5 days |
| Allergic reaction / urticaria | 0.5–1 mg/kg/day | 40 mg/day | 3–5 days |
| Croup (where prednisolone is used) | 1 mg/kg once | 60 mg once | Single dose |
| Nephrotic syndrome (initial courses) | 2 mg/kg/day | 60 mg/day | Protocol-driven, often weeks |
Step-by-step dosing logic
1) Convert weight to kilograms
If weight is entered in pounds, divide by 2.20462 to get kilograms.
2) Calculate the raw daily dose
Raw daily dose (mg/day) = weight (kg) × target dose (mg/kg/day)
3) Apply a maximum daily cap
If your protocol has a maximum dose, the final daily dose should not exceed that ceiling.
4) Split across doses per day
Per-dose amount (mg) = final daily dose ÷ doses per day
5) Convert mg to mL for oral solution
Using concentration in mg per 5 mL:
mg/mL = concentration ÷ 5
mL per dose = per-dose mg ÷ (mg/mL)
Practical administration tips
- Use an oral syringe, not a kitchen spoon.
- Round mL amounts carefully (often to nearest 0.1 mL, unless local guidance says otherwise).
- Confirm whether your plan is once daily or divided doses.
- Double-check concentration, since formulations can differ by country or pharmacy.
- If a child vomits a dose, follow your clinician’s specific redosing instructions.
Safety checks before giving prednisolone
- Verify the child, drug, concentration, dose, route, and timing.
- Review allergy history and current medicines for interactions.
- Watch for adverse effects: mood changes, GI upset, sleep disturbance, and high blood sugar risk in susceptible patients.
- Seek urgent medical care for breathing difficulty, severe lethargy, dehydration, or worsening symptoms.
Frequently asked questions
Can I use this calculator as a prescription?
No. This is an educational calculation aid. Final prescribing and administration decisions must come from a qualified clinician.
Why do some children get a “max dose” cap?
Weight-based formulas can exceed common safe short-course limits in larger children. Caps prevent unintended overexposure.
What if my bottle concentration is different?
Enter the exact concentration shown on the label in mg per 5 mL. The mL output updates automatically.
Do I always need to taper prednisolone?
Not always. Short courses are often not tapered, but taper decisions depend on duration, dose, and clinical context. Follow your prescriber’s plan.