Nursing specialty hub
Cardiac nursing calculators & guides
A cardiac nursing navigation hub that curates existing MedMaths infusion, fluid and renal calculators into one quick-access page.
Start with the task
What do you need to work out right now?
Pick the question that matches the infusion, medication order or renal calculation in front of you.
I need to set or verify a mcg/kg/min infusion
Use the ordered weight-based dose, patient weight and verified infusion concentration to calculate or check mL/hr.
I have a volume and time. What mL/hr do I set?
Calculate the pump rate directly from the prescribed volume and infusion time.
I have an ordered mg dose. How many mL do I give?
Use the prescribed dose and the strength shown on the medicine label.
My medicine reference asks for Cockcroft-Gault CrCl
Calculate creatinine clearance using the weight method specified by the reference.
Cardiac calculator toolkit
Get to the cardiac calculation without hunting through the page
Immediate infusion and medication maths comes first, with renal and dosing-weight support kept underneath for when the medicine reference asks for it.
Infusions + pump maths
Get the infusion rate or timing you need
Start here for weight-based cardiac infusions, pump-rate arithmetic and infusion duration. Gravity drip maths stays available as a secondary line check.
mcg/kg/min Infusion Rate Calculator
Use this when
Use when programming or verifying a weight-based infusion of a vasoactive, sedative, or inotropic agent in mcg/kg/min.
Open calculatorIV Infusion Rate Calculator
Use this when
Use when the order says a volume over a time and you need the mL/hr pump rate. No drop factor is required.
Open calculatorIV Drip Rate Calculator
Use this when
Use when the giving-set drop factor is known and the order provides either mL/hr or total volume and time.
Open calculatorIV Infusion Time Calculator
Use this when
Use when you know the volume to infuse and mL/hr rate and need to know how long it will take or when it will finish.
Open calculatorMedication dose
Convert the ordered dose into the amount to give
Use the medicine order and product strength to get to a measurable administration volume quickly.
Renal + dosing support
Use the renal or weight method named by the reference
CrCl, eGFR and adjusted body weight stay grouped underneath the immediate infusion tools so the medication reference can determine which calculation applies.
Creatinine Clearance Calculator
Use this when
Specific-method calculator for sources that explicitly require Cockcroft-Gault CrCl and a defined weight method.
Open calculatoreGFR Calculator (CKD-EPI 2021)
Use this when
Modern adult renal-function pathway for eGFR and medication-related workflows when the governing source uses CKD-EPI.
Open calculatorAdjusted Body Weight Calculator
Use this when
Use only when a medicine reference, equation, or local protocol specifically requires the 0.4 adjusted-body-weight method.
Open calculatorBrowse by calculation type
Calculation topics used in Cardiac
These topic hubs group the same calculators by calculation type. Use them when you want to move from this specialty view into the wider MedMaths calculation pathway.
Calculation topic
Dose Calculations
Start with the medication order and label: find mL from mg, mg/kg, or units without pre-calculating the answer first.
Open topic hubCalculation topic
IV Fluids & Infusions
Choose by the answer you need: pump rate in mL/hr, gravity drops/min, infusion duration, or a check of an existing drip.
Open topic hubCalculation topic
Dosing Body Measures
Calculate BSA, Devine ideal body weight, or the 0.4 adjusted-body-weight method when a protocol specifically names that measure.
Open topic hubCalculation topic
Renal Dosing Support
Start with modern CKD-EPI 2021 eGFR or use Cockcroft-Gault CrCl when a current source specifically requires it.
Open topic hubLearning
Related MedMaths guides
mcg/kg/min Infusions Explained: Dose Rate and Pump Rate
Learn how mcg/kg/min connects dosing weight, time and infusion concentration to mL/hr, including forward and reverse calculations, unit checks and high-risk infusion safety boundaries.
Medication Dose Rate vs Pump Rate Explained
Understand dose rate versus pump rate, calculate mg/hr from concentration and mL/hr, convert mg/hr and mg/min, and recalculate mL/hr after an authorised medication-rate or concentration change.
IV Volume, Time and Rate Explained
Understand how IV volume, time and mL/hr fit together, why the same formula can solve for rate, volume or time, and how to handle minutes, remaining volume and common unit mistakes.
eGFR vs CrCl: which renal function estimate should you use?
Understand how CKD-EPI eGFR and Cockcroft-Gault CrCl differ, why their values may not match, and how to follow the estimate and units required by the current source.
Use the calculator guidance for each clinical situation
Specialty grouping is designed to help you find tools faster. Always follow the guidance on the individual calculator page, medication references, local policy, and clinical review requirements.