Daily Divided Dose Calculator
Divides a total daily mg/kg/day or fixed mg/day regimen into individual scheduled doses by dosing interval (q24h, q12h, q8h, q6h).
⚠️ Educational Calculation & Clinical Safety Safeguard: Confirm whether the prescribed regimen is stated as mg/kg/day (to be divided) or mg/kg/dose (already per dose). Educational calculations do not replace clinician assessment, patient-specific laboratory monitoring, or institutional prescribing protocols.
Interactive Calculator
Allowed physiological/compounding range: 0.1 to 20000 mg/day
Allowed physiological/compounding range: 1 to 24 hours (e.g., 8 for q8h)
Calculated Output (mg/dose)
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Step-by-Step Mathematical Derivation & Explanation:
Validated Formula & Conversion Rules
Doses/day = 24 / Interval (h); Single Dose (mg) = Total Daily Dose (mg/day) / Doses/dayWorked Clinical Example
Amoxicillin 1500 mg/day divided q8h (3 doses/day): Single Dose = 1500 / 3 = 500 mg every 8 hours.
Rounding Rules, Clinical Interpretation, Assumptions & Known Limitations
- 1. Purpose: Divides a total daily mg/kg/day or fixed mg/day regimen into individual scheduled doses by dosing interval (q24h, q12h, q8h, q6h).
- 2. Required Inputs & Validated Units: Total Daily Dose (mg/day, range 0.1–20000), Dosing Interval (hours (e.g., 8 for q8h), range 1–24)
- 3. Output Unit:
mg/dose - 4. Result Interpretation Notes: Splits a total daily dose evenly across standard clinical dosing intervals (q24h, q12h, q8h, q6h, q4h).
- 5. Rounding Guidance: Round to nearest commercially available capsule/tablet or measurable suspension volume.
- 6. Mathematical & Clinical Assumptions: Assumes equal maintenance doses at uniform time intervals.
- 7. Known Limitations & Contraindications to Formula Use: Does not account for loading doses or asymmetric dosing schedules (e.g., diurnal corticosteroid or anti-anginal regimens).
- 8. Supporting Compendial & Clinical References: Indian Pharmacopoeia (IP 2022), National Formulary of India (NFI), British National Formulary (BNF), and NCBI Bookshelf Clinical Pharmacology Compendia.