Nurse

IV Drip Rate Calculator

Converts between mL/hr and drops/min for any drop factor (macro 10/15/20, micro 60). Three modes — pick what you know.

Body Surface Area (BSA)

BSA from height + weight using Mosteller, DuBois, Haycock, and Boyd formulas. For mg/m² dosing.

MAP + Shock Index

Mean arterial pressure + shock index from BP and HR. Surfaces perfusion-target status (MAP ≥ 65) and shock-index thresholds (≥ 1.0 concerning).

NEWS2 Score

Calculate the National Early Warning Score 2 (RCP 2017) — the UK standard for monitoring acutely unwell adults. Enter the 7 vital-signs parameters (respiratory rate, SpO2, supplemental O2 status, temperature, systolic BP, pulse, consciousness via ACVPU) and the tool scores each component 0-3, totals them, and gives the risk band (low / low-medium / medium / high) with the recommended observation frequency and escalation action. SpO2 supports both Scale 1 (most patients) and Scale 2 (hypercapnic respiratory failure, e.g. COPD with target 88-92%). Flags single-parameter score of 3, which triggers urgent review regardless of aggregate. For monitoring acutely unwell adults aged 16+; not validated in pregnancy, spinal injury, or paediatrics. Local protocols always override.

Glasgow Coma Scale (GCS)

Eye + verbal + motor scoring with severity tier and documentation-ready string. Handles intubated and eyes-swollen-shut conventions.

Depression & Anxiety Screening

PHQ-9 and GAD-7 — the two validated questionnaires used in primary care. Screening, not diagnosis. Stays on your device.

Sleep Apnea Screening (STOP-BANG)

The 8-question validated screening tool for obstructive sleep apnea. Score ≥3 typically warrants a sleep study conversation.

Anion Gap

Calculate the anion gap (AG = Na − [Cl + HCO3]) with optional albumin correction (AG + 2.5 × [4 − albumin]). Reference bands include normal (8–12 mEq/L), borderline (12–16), raised metabolic acidosis (16–25), and very high HAGMA (>25). Optional potassium inclusion for the Na+K variant. Use it to differentiate high-AG metabolic acidosis (lactic, ketoacidosis, renal failure, toxic ingestions) from normal-AG (GI bicarbonate loss, RTA). Albumin correction is critical in hypoalbuminaemic patients where the raw AG underestimates the true gap. For clinical reference only — interpret alongside pH, pCO2, lactate, ketones, and the clinical picture.

Creatinine Clearance + eGFR

CKD-EPI 2021 (race-free), MDRD, and Cockcroft-Gault in one tool. With CKD stage classification and "which to use when" guidance.

Kids Medication Dosage

Acetaminophen, Ibuprofen, Benadryl, Zyrtec, and Claritin dosing for children. Per-dose range plus 'next dose at' timer. Hard cutoffs for under-3-month / under-6-month / under-6-year + a permanent disclaimer.

Reconstitution Calculator

Mixing and drawing calculator with visual syringe and vial diagrams. Work out bacteriostatic water for mixing and the exact syringe units to draw. Free online reconstitution calculator.

Pregnancy Due Date Calculator

Calculate your due date and track pregnancy milestones from LMP, conception, or ultrasound.

Explain Like I'm 5

Simplify complex text to any reading level using AI.

AI Summarizer

Summarize any text into key points using AI.

AI Paraphraser

Rewrite text in different words while keeping meaning.

Markdown to PDF

Convert Markdown to PDF with proper formatting. Code blocks, lists, quotes, headings. Free online tool.

Stopwatch

Precise stopwatch with lap tracking.

Countdown Timer

Set a countdown timer with custom duration.

Pomodoro Timer

Focus timer with work sessions and break intervals.

Date Calculator

Calculate the difference between dates or add/subtract days.

BMI Calculator

Calculate your Body Mass Index with visual results and tracking.

Body Fat Estimator

Estimate body fat percentage using measurements.

Ideal Weight Calculator

Calculate ideal body weight using 4 medical formulas. Compare with healthy BMI range.

Waist-to-Hip Ratio

Calculate your waist-to-hip ratio (WHR) and health risk category. Free online WHR calculator.