⚕ Clinical Calculator
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Weight-Based Dosing
Calculates single dose or continuous infusion based on patient weight.
Dosing Result
| Weight Used | |
| Calculated Dose | |
| Infusion Rate | |
| Daily Dose |
IV Infusion Rates
Convert between mL/hr and gtt/min, or calculate rate from dose.
mL/hr ↔ gtt/min Converter
Drop Rate
| Flow Rate | |
| Drop Rate |
Dose-Based Rate Calculator
Infusion Rate Result
| Concentration | |
| Infusion Rate | |
| Drop Rate |
Unit Converter
Weight
Temperature
Drug Mass
Volume
Length
Creatinine Clearance (Cockcroft-Gault)
Used for drug dosing adjustments in renal impairment. Always verify with pharmacist for critical drugs.
Creatinine Clearance Result
| Ideal Body Weight | |
| Weight Used | |
| CrCl (Cockcroft-Gault) | |
| Renal Function |
Mean Arterial Pressure (MAP)
MAP = (SBP + 2 × DBP) ÷ 3 | Normal range: 70–100 mmHg
MAP Result
| Systolic / Diastolic | |
| Pulse Pressure | |
| Mean Arterial Pressure |
BMI & Ideal Body Weight
IBW uses Devine formula. Adjusted BW used when actual weight > 130% IBW.
BMI & IBW Result
| BMI | |
| BMI Category | |
| Ideal Body Weight (IBW) | |
| Adjusted Body Weight | |
| BSA (Mosteller) |
Maintenance Fluids (Holiday-Segar / 4-2-1 Rule)
First 10 kg: 4 mL/kg/hr | Next 10 kg: 2 mL/kg/hr | Each kg > 20 kg: 1 mL/kg/hr
Maintenance Fluid Result
| Weight Used | |
| First 10 kg | |
| Next 10 kg | |
| Remaining kg | |
| Total Rate | |
| 24-Hour Volume |
QTc Interval (Bazett's Formula)
QTc = QT ÷ √RR | Normal: ≤440 ms (M) / ≤450 ms (F) | High risk: >500 ms
QTc Result
| QT Interval | |
| RR Interval | |
| QTc (Bazett) | |
| Normal Limit |
Parkland Formula — Burn Fluid Resuscitation
Total 24-hr: 4 mL × kg × %TBSA (2nd & 3rd degree only) | Half in first 8 hrs from time of burn.
Parkland Formula Result
| Weight Used | |
| %TBSA | |
| Total 24-hr Volume | |
| First 8 hrs (from burn) | |
| Rate — First 8 hrs | |
| Next 16 hrs volume | |
| Rate — Next 16 hrs | |
| Remaining 1st-8-hr Volume |
Pediatric Weight Estimate
Formula-based estimate only. Obtain actual weight when possible. For emergencies, use Broselow tape for accuracy.
Pediatric Weight Estimate
| Age | |
| Formula Used | |
| Estimated Weight | |
| Weight in lb |
Glasgow Coma Scale (GCS)
Select best response in each category. Max score: 15 (normal). Min: 3 (deep coma).
GCS Result
| Eye (E) | |
| Verbal (V) | |
| Motor (M) | |
| Total GCS Score | |
| Interpretation |
Estimated Due Date (Naegele's Rule)
EDD = LMP + 280 days (40 weeks). Based on regular 28-day cycle.
Due Date Result
| LMP | |
| Estimated Due Date | |
| Current Gestational Age | |
| Trimester | |
| Days Until EDD |
Basic Calculator
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