For nurses & nursing students

Night-shift drips and drug math, without the guesswork.

Free, ad-free nursing calculators that work in your browser and offline. No login, no clutter — just the numbers you need at the bedside.

No ads No login Works offline
Tools

Starting with the three calculators you'll reach for most.

Each formula is based on published nursing references and guidelines, and you can check the math yourself.

Free now

IV Drip Rate Calculator

Enter volume, time and drop factor (adult 20 / pediatric 60) to get drops per minute, seconds per drop and mL/h.

Use it now →
Free now

Weight-Based Dosage Calculator

Calculate per-dose and daily amounts from an mg/kg order, plus the pediatric fluid requirement (Holliday-Segar).

Use it now →
Coming soon

BMI & Body Surface Area (BSA)

BMI and the Mosteller BSA formula in one place.

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No payment now. We'll only email you when the toolkit launches.

How it works

Three simple steps.

1

Open a calculator

No account needed — just tap the tool you need.

2

Enter the numbers

Results update instantly, with the formula shown.

3

Regulate with confidence

Use the count or dose at the bedside.