Adderall Dosage Calculator
Calculate appropriate Adderall (amphetamine) dosage by age, weight, and formulation. Includes titration schedules, IR vs XR guidance, and safety reference tables.
Free Dosing & Medications Calculators
26 toolsDrug dosage, half-life, pediatric dosing, and medication conversion calculators. Browse our free dosing & medications tools below — no sign-up required.
Aleve Dosage Calculator
Calculate Aleve (naproxen sodium) dosing by age, weight, and condition. Includes OTC max limits, dosing schedules, risk factors, and safety reference tables.
Amoxicillin Pediatric Dosage Calculator
Calculate pediatric amoxicillin doses by weight, indication, and formulation. Includes suspension volume, dosing schedules, and indication-specific reference tables.
Benadryl Dosage Calculator
Calculate diphenhydramine (Benadryl) dosage by age, weight, and formulation. Includes pediatric dosing, OTC limits, side effect tables, and sedation risk assessment.
Cefdinir Dosage Calculator
Calculate cefdinir (Omnicef) dosage for pediatric and adult patients by weight, indication, and renal function with suspension volume conversion.
Drug Half-Life Calculator
Calculate drug elimination, time to clearance, steady-state concentrations, and accumulation factor from half-life and dosing interval.
Fresh Frozen Plasma (FFP) Dose Reference Calculator
Calculate FFP reference volumes by weight and scenario for coagulopathy review, vitamin K antagonist reversal review, plasma exchange, and other transfusion-planning worksheets.
Gabapentin Dosage Calculator
Calculate gabapentin dose titration schedules for neuropathic pain, seizures, and off-label uses with renal adjustments and titration planning.
Hydroxychloroquine Dosage Calculator
Calculate hydroxychloroquine (Plaquenil) reference dosing by actual and ideal body weight with retinal toxicity risk context using the AAO framework summarized on this page.
Ibuprofen Dosage Calculator
Calculate ibuprofen dosage for adults and children by age and weight with formulation-specific volumes, pediatric dosing chart, and safety checks.
Infant Tylenol (Acetaminophen) Dosage Calculator
Calculate infant and children's acetaminophen (Tylenol) dosage by weight with multiple formulations, dosing chart, and toxicity thresholds.
Insulin Dosage Calculator
Calculate insulin doses including basal, bolus, correction factor, and carb ratio using the 1800 rule, 500 rule, and weight-based TDD estimation.
IVIG Dose Calculator
Calculate intravenous immunoglobulin (IVIG) dose by weight and indication including ITP, Kawasaki, Guillain-Barré, CIDP, and immunodeficiency as a reference worksheet.
Levothyroxine Dosage Calculator
Calculate levothyroxine (Synthroid) dose by weight, age, and indication with TSH-based dose adjustment, pregnancy dosing, alternating-day schedules, and tablet strength selection.
Lidocaine Dose Calculator
Calculate lidocaine maximum-dose and volume conversions by weight with or without epinephrine as a reference worksheet.
Medication Dosage Calculator
Calculate medication dosages using weight-based, BSA-based, or concentration-based methods with pediatric presets, max dose caps, and volume conversions.
Melatonin Dosage Calculator
Calculate the right melatonin dose by age, weight, and sleep issue type. Covers pediatric dosing, jet lag protocols, formulation comparison, and timing guidance.
Paracetamol Dosage Calculator
Calculate safe paracetamol (acetaminophen) doses for adults and children by weight. Includes pediatric liquid dosing, liver risk assessment, and combination product warnings.
Pediatric Dose Calculator
Calculate pediatric drug doses using Young's Rule, Clark's Rule, BSA method, and mg/kg dosing. Compare all four methods side-by-side with safety checks.
Pediatric Epinephrine Dose Calculator
Calculate pediatric epinephrine doses for anaphylaxis, cardiac arrest, bradycardia, croup, and asthma. Weight-based dosing with concentration conversions and autoinjector guidance.
Peptide Dosage Calculator
Calculate peptide reconstitution and injection doses. Converts vial content, bacteriostatic water volume, and syringe units for BPC-157, TB-500, Ipamorelin, CJC-1295, and more.
Radiation Dose Calculator
Calculate and compare radiation doses from medical imaging, occupational exposure, and natural background. Converts between Sv, Gy, rem, rad with risk assessment and equivalents.
Tramadol Dosage Calculator
Calculate tramadol dosing by weight with renal, hepatic, and elderly adjustments. Includes MME conversion, serotonin syndrome risk, seizure warnings, and drug interaction tables.
Tylenol Dosage Calculator
Review Tylenol (acetaminophen) reference doses for adults and children. Track daily total from all APAP sources, pediatric liquid dosing by weight, and daily limit with liver disease adjustment.
Tylenol Overdose Calculator
Review acetaminophen overdose dose severity, Rumack-Matthew nomogram thresholds, and liver-injury context in one worksheet.
Warfarin INR Review Worksheet
Compare a current INR with common target ranges and review rough weekly-dose math, interaction context, and tablet-strength reference information for warfarin follow-up discussions.