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Both calculators run independently — change the inputs on either side to compare results.

Daily Fluid Requirements Calculator

Estimates a patient's daily fluid needs using the Holliday-Segar method, a tiered weight-based formula. Used by clinicians and nurses to calculate maintenance IV fluids or oral fluid targets for pediatric and adult patients.

Weight (kg)

Fill in the required fields to see your result.

Medicine

Medication Dosage Calculator

Calculate a weight-based medication dose adjusted for patient age and kidney function. Useful for clinicians and pharmacists when standard dosing requires renal or geriatric modifications.

Patient Weight (kg)

Standard Dose (mg/kg)

Serum Creatinine (mg/dL)

Patient Age (years)

Renal Adjustment Factor

Fill in the required fields to see your result.

Key differences

	Daily Fluid Requirements Calculator	Medication Dosage Calculator
Category	Medicine	Medicine
Inputs required	1	5
Result	Daily Fluid Requirements (mL/day)	Adjusted Dose (mg)
What it does	Estimates a patient's daily fluid needs using the Holliday-Segar method, a tiered weight-based formula. Used by clinicians and nurses to calculate maintenance IV fluids or oral fluid targets for pediatric and adult patients.	Calculate a weight-based medication dose adjusted for patient age and kidney function. Useful for clinicians and pharmacists when standard dosing requires renal or geriatric modifications.