Tools for EMS and field medicine
Field-tested references for the back of the rig.
More about this page
Pediatric weight-to-dose, START and JumpSTART MCI triage, Parkland and Modified Brooke burn fluids, naloxone dosing, defibrillation energy, AHA CPR numeric reference, DOT ERG hazmat lookup, NIOSH Pocket Guide.
134 tools in this hub, all free, all in your browser.
Clinical Math & Conversions
- Mean Arterial Pressure Compute mean arterial pressure from a cuff systolic and diastolic using the standard physiology approximation…
- Anion Gap Compute the anion gap (Na - (Cl + HCO3)) and the albumin-corrected anion gap (+2.5 mEq/L per 1 g/dL drop below 4.0).
- Corrected Sodium for Hyperglycemia Compute glucose-corrected serum sodium using both of the published correction factors so the clinician can see them side by side.
- P/F Ratio Compute the PaO2 / FiO2 ratio - the oxygenation index from the ARDS Berlin Definition (JAMA 2012).
- MAP / Pulse Pressure / Shock Index Compute four bedside hemodynamic indices from a single set of vitals.
- Maintenance Fluids (4-2-1) Compute pediatric maintenance IV fluid rate using the Holliday-Segar 4-2-1 rule.
- ROX Index (HFNC failure prediction) ROX index (Roca 2019) = (SpO2/FiO2)/respiratory rate; predicts HFNC success.
- Urine output rate + KDIGO oliguria flag Weight-indexed urine output = volume/(interval*weight) in mL/kg/hr; <0.5 flags oliguria.
- Burn-resuscitation urine-output target Target hourly urine output for burn resuscitation from weight, with pediatric and electrical-injury/pigmenturia adjustments.
Medication & Infusion
- Drip Rate Calculator Convert a volume (mL) and duration (min) into both a pump rate (mL/hr) and a gravity-drop rate (gtts/min) for…
- Weight-Based Dose Compute a total dose from a per-kilogram dose and a patient weight using the standard formula total = weight (kg) * dose per kg.
- Concentration-to-Rate Convert between drug concentration, weight-based dose, and infusion rate.
- Pediatric Quick-Dose Panel (by weight) Show the published weight-based safety bounds for common pediatric medications.
- Anticoagulation Reversal Dose Pull up the standard reversal options for the common anticoagulants on a single page.
- Oxygen Cylinder Duration & Max Transport Flow Oxygen cylinder duration.
- Vasopressor Dose to Rate Calculator Convert a vasopressor dose order into a pump rate, or a pump rate back into a delivered dose.
- Single Low-Dose Primaquine to Stop Falciparum Transmission (WHO 2026) Gives the WHO single low dose of primaquine with an ACT to cut falciparum transmission.
- Is an IPTp-SP Dose Due Today? Malaria Prevention in Pregnancy (WHO) Says whether an IPTp-SP dose for malaria in pregnancy is due today.
- Seasonal Malaria Chemoprevention Dose: SP plus AQ by Age (WHO) Gives the seasonal malaria chemoprevention SP+AQ dose by age.
- TB Preventive Treatment Tablets by Weight: 3HP, 3HR, 6H, 4R, 1HP, 6Lfx (WHO 2024) Gives WHO TB preventive treatment tablets by weight band.
- Can This Child Take the 4-Month TB Regimen? (WHO, Non-Severe TB) Says whether a child can take the WHO 4-month TB regimen.
- Primaquine or Tafenoquine for Vivax Relapse, by G6PD Result (WHO 2026) Gives the WHO 2026 regimen to prevent vivax relapse for a G6PD result.
- Worm Infection Intensity From an Egg Count (Kato-Katz and Urine Filtration, WHO) Classes a worm egg count as light, moderate or heavy by WHO Table 5.1.
- Community Decision: Schistosomiasis Mass Treatment Frequency (WHO 2022) A community program decision on schistosomiasis mass treatment by WHO 2022.
- Which Filariasis Mass Treatment Regimen for This Area and This Person? (WHO 2017) Picks the WHO 2017 filariasis mass treatment regimen for an area.
- Hydatid Cyst: WHO Stage and First-Line Treatment (2025) Gives the WHO 2025 first-line treatment for a hydatid cyst.
- Home Drug Doses by Weight or Age for Children 2-59 Months (WHO IMCI) Gives IMCI home drug doses for a child 2-59 months by the chart bands.
- Pre-Referral Injections and Rectal Diazepam for Children 2-59 Months (WHO IMCI) Gives IMCI pre-referral volumes for a child 2-59 months.
- Arpraziquantel for Preschool Children With Schistosomiasis (Tablets by Weight) Gives arpraziquantel tablets for preschool schistosomiasis (EMA).
- Deworming Dose and Frequency (WHO Preventive Chemotherapy) Gives the WHO deworming dose and how often, by group and local worm prevalence.
- Liver and Lung Fluke Treatment Dose (WHO Foodborne Trematodes) Gives the WHO dose for a liver or lung fluke by weight.
- Antibiotic Dose for a Child by Weight (WHO AWaRe) Gives a child's antibiotic dose by weight (WHO AWaRe book).
- Magnesium Sulfate IM Regimen and Next-Dose Check (WHO) Gives the WHO magnesium sulfate loading and IM maintenance for severe pre-eclampsia or eclampsia.
- First-Line TB Tablets by Weight: Child Dispersible and Adult FDCs (WHO) Gives first-line TB tablets by weight from WHO tables.
- Mass Treatment Dose by Height or Age: Praziquantel, Ivermectin, Albendazole, Mebendazole, DEC (WHO) Gives the mass drug administration dose from WHO tables.
- Dengue IV Fluids: The Rate Ladder by Group and Weight (WHO) Turns WHO dengue IV fluid rates into mL per hour for a weight.
- Cholera Rehydration: Dehydration, Fluids and Antibiotic (GTFCC 2024) Classifies dehydration in suspected cholera and gives the GTFCC plan and fluid volumes.
- ORS Plans A, B and C: Fluid for a Child With Diarrhea (WHO IMCI) Gives the fluid for a child under 5 with diarrhea on WHO Plan A, B or C.
Clinical Scoring & Risk
- Glasgow Coma Scale Score the Glasgow Coma Scale on its three components.
- APGAR Score the APGAR on its five components.
- ABG Interpretation Walkthrough Walk a blood-gas tuple (pH, PaCO2, HCO3, and optionally PaO2 / FiO2) through the standard acid-base…
- Wells Score for PE Score the Wells criteria for pulmonary embolism.
- NIH Stroke Scale Score the National Institutes of Health Stroke Scale on its 15 items and return the total (0-42) plus the…
- Modified Sgarbossa Criteria (Smith) Apply the modified Sgarbossa criteria (Smith) for diagnosing acute myocardial infarction in the presence of…
- ABCD2 Score (TIA stroke risk) Compute the ABCD2 score for early stroke risk after transient ischemic attack (Johnston Lancet 2007).
- NEWS2 (National Early Warning Score 2) NEWS2 (RCP 2017): respiratory rate, SpO2 (Scale 1, or Scale 2 for hypercapnic respiratory failure)…
- sPESI (Simplified PESI) Simplified PESI (Jimenez 2010).
- Canadian C-Spine Rule (CCR) Canadian C-Spine Rule (Stiell 2001).
- Ottawa Ankle Rules Ottawa Ankle and Foot Rules (derived Stiell 1992; these are the refined rules of Stiell 1993).
- SIRS Criteria (with Sepsis-3 context) SIRS criteria (Bone 1992).
- CRB-65 (CAP severity, no BUN) CRB-65 pneumonia severity (Lim 2003).
- C-STAT / CPSSS (prehospital LVO severity) Cincinnati Prehospital Stroke Severity Scale / C-STAT (Katz 2015).
- FAST-ED (field LVO triage) Field Assessment Stroke Triage for Emergency Destination (Lima 2016).
- WHO Labour Care Guide: Which Observations Need an Alert? Flags the labor observations that meet a WHO Labour Care Guide alert threshold.
- Postpartum Hemorrhage: WHO 2025 Criteria and Tranexamic Acid Checks a bleed after birth against WHO 2025 postpartum hemorrhage criteria.
- NEXUS Head CT Instrument (Adult) NEXUS Head CT rule: any of eight criteria…
Workflow & Documentation
EMS & Field Medicine
- Pediatric Weight-to-Dose Calculator A weight-based dosing reference for the small set of medications most often given to children in a…
- FAST and BE-FAST Stroke Assessment Apply the FAST and BE-FAST stroke screens.
- Trauma Triage Decision Tool (CDC) Step a single injured patient through the CDC National Guidelines for the Field Triage of Injured Patients.
- START Adult MCI Triage Walk a single adult patient through the START (Simple Triage and Rapid Treatment) algorithm and return a…
- JumpSTART Pediatric MCI Triage Walk a pediatric patient (roughly age 1-8, or any child who looks pre-adolescent) through the JumpSTART…
- Burn Fluid Resuscitation Calculator Compute initial fluid resuscitation for major thermal burns using the Parkland…
- Pediatric ETT Size Calculator Compute the recommended pediatric endotracheal tube size and insertion depth for a given age.
- Adult ETT Depth (Lip Corner) Estimates where an adult oral endotracheal tube should sit at the corner of the mouth, by sex and by height.
- Naloxone Dosing Calculator Select adult or pediatric, pick a route (IV, IM, intranasal, or subcutaneous), and enter the pediatric weight if needed.
- EMS Documentation Helper Build a complete EMS narrative in the standard CHART…
- Pediatric Weight Estimate (APLS) Pediatric weight estimate (APLS): a resuscitation-planning weight from age when no scale is available.
- Pediatric Vital Signs Reference (PALS) Pediatric vital-sign reference (AHA PALS 2020).
- Drug Concentration to Volume (draw-up) Draw-up volume: volume to draw (mL) = ordered dose (mg) / stock concentration (mg/mL).
- NEXUS + Canadian C-Spine Apply the two validated clinical-decision rules for cervical-spine imaging in alert blunt-trauma patients.
- CO / Cyanide / Smoke-Inhalation Antidotes Walk through the antidote decisions for the three smoke-inhalation toxidromes that share a structure fire…
- AVPU ↔ GCS Quick Reference A bedside cross-reference between the four-point AVPU scale…
- Lake Louise Acute Mountain Sickness (AMS) Score Lake Louise Acute Mountain Sickness score (Roach 2018).
- Szpilman Drowning Classification Szpilman drowning classification (Szpilman 1997).
- Snakebite Severity Score (SSS) Snakebite Severity Score (Dart 1996).
- Cauchy Frostbite Classification Cauchy frostbite classification (Cauchy 2001).
- Is Antivenom Indicated for This Snakebite? (WHO SEARO and AFRO) Applies WHO SEARO or AFRO criteria for antivenom after a snakebite.
- Which Snake? The Snakebite Syndromic Approach (WHO SEARO and AFRO) Suggests which snakes a snakebite picture points to (WHO syndromes).
- When to Repeat Antivenom (WHO SEARO, AFRO, and India) Says whether and when to repeat antivenom after a snakebite.
- Neostigmine Trial for Neurotoxic Snakebite: Doses and Response (WHO and India) Gives the neostigmine trial doses for neurotoxic snakebite.
- 20-Minute Whole Blood Clotting Test (20WBCT) After Snakebite (WHO) Reads a 20-minute whole blood clotting test after a snakebite.
Immunization & Infectious Disease
- Tetanus Prophylaxis Decision Tree Cross-reference the CDC's tetanus prophylaxis decision matrix.
- Rabies PEP Decision Tree (CDC, US) Walk the CDC ACIP rabies post-exposure prophylaxis decision tree.
- Tetanus-Diphtheria Doses in Pregnancy (WHO 2017) Gives the WHO tetanus-diphtheria doses in pregnancy by documented history.
- Cotrimoxazole Prophylaxis in HIV: Who Gets It and the Dose by Weight (WHO) Gives WHO cotrimoxazole prophylaxis for HIV: who gets it and the once-daily dose by weight.
- Diphtheria Antitoxin Dose and Antibiotic (WHO 2024) Gives the WHO 2024 diphtheria antitoxin dose by disease.
- Typhoid (Enteric Fever) Antibiotic by Severity and Local Resistance (WHO AWaRe) Gives the WHO AWaRe empiric antibiotic for typhoid by severity and local resistance.
- Leprosy: Paucibacillary or Multibacillary, and the MDT Regimen (WHO 2018) Classifies leprosy as paucibacillary or multibacillary by WHO 2017 definitions and gives the 2018 MDT.
- Single-Dose Rifampicin for Leprosy Contacts (WHO 2018) Gives the WHO single-dose rifampicin for a leprosy contact by age and weight.
- WHO Clinical Stage of HIV (Adults, Adolescents and Children) Gives the WHO clinical stage of HIV for an adult or child.
- Is This Advanced HIV Disease, and What Package Applies? (WHO 2025) Says whether this is advanced HIV disease by WHO 2025 and lists the package.
- Cryptococcal Antigen Screening and Fluconazole in Advanced HIV (WHO) Says whether to screen for cryptococcal antigen before ART and what to give.
- When Is the Next HIV Test Due for an HIV-Exposed Infant? (WHO) Says when the next HIV test is due for an HIV-exposed infant and which test.
- Suspected Bacterial Meningitis: Lumbar Puncture, Empiric Antibiotics, Steroids, Duration (WHO 2025) Walks WHO 2025 suspected bacterial meningitis decisions.
- Scrub Typhus: Case Definition and Doxycycline or Azithromycin Dose (ICMR, India) Classifies scrub typhus as suspected, probable or confirmed by ICMR 2015 and gives doxycycline or azithromycin by weight.
- Buruli Ulcer Category and 8-Week Antibiotic Doses (WHO) Gives the WHO Buruli ulcer category (I, II or III) and the 8-week antibiotics by weight.
- Yaws: Case Class, Reading the Test, and Azithromycin Dose (WHO) Reads the yaws rapid and DPP tests, gives the WHO case class, and the azithromycin dose.
- Prednisolone Schedule for a Type 1 Leprosy Reaction or Neuritis (WHO 2020) Gives the WHO 2020 20-week prednisolone taper for a type 1 leprosy reaction or neuritis.
- WHO Leprosy Disability Grade and Eye-Hand-Foot (EHF) Score Grades leprosy disability by the WHO 2009 rules.
- Scabies: Confirmed, Clinical or Suspected, and Ivermectin Mass Treatment (WHO 2025) Classifies scabies by the 2020 IACS criteria (WHO 2025).
- Lymphedema Stage in Lymphatic Filariasis (Dreyer, 7 Stages) Stages filarial lymphedema of a leg or arm from 1 to 7 by the Dreyer scheme (WHO 2001).
- Podoconiosis Stage (Tekola, 5 Stages) Stages podoconiosis of one leg from 1 to 5 (Tekola 2008).
- Noma (Cancrum Oris) Stage and Urgency (WHO) Stages noma (cancrum oris) by the WHO AFRO brochure.
- Sleeping Sickness (HAT): Stage and Which Drug (WHO 2024) Stages sleeping sickness and gives the first-choice drug (WHO 2024).
- Dengue, Chikungunya, Zika or Yellow Fever: Signs That May Prompt Admission (WHO 2025) Lists WHO 2025 signs that might prompt hospitalizing a dengue patient.
- Chikungunya Case Definition (WHO/PAHO) Classifies a chikungunya case by the WHO/PAHO 2015 definitions.
- Zika Case Definition (WHO Interim 2016) Classifies a Zika case by WHO interim 2016 definitions.
- Yellow Fever Case Definition (WHO 2010) Classifies a yellow fever case by WHO 2010 definitions.
- WHO Simplified Trachoma Grading (2020 Amended) Grades one eye by the WHO simplified trachoma system as amended in 2020.
- Organophosphate Poisoning: Atropine Dose Doubling and Infusion (Eddleston) Gives the next atropine bolus in organophosphate poisoning.
- Indian Red Scorpion Sting Grade (Mesobuthus tamulus) Grades an Indian red scorpion (Mesobuthus tamulus) sting from 1 to 4.
- Snakebite Severity and Antivenom Vials in Brazil (Ministry of Health) Classes a snakebite in Brazil and gives the antivenom vials.
- Lee-White Clotting Time After Snakebite (Brazil) Reads a Lee-White clotting time after a snakebite (Brazil).
- Scorpion Sting Severity and Antivenom in Brazil (Tityus) Classes a Tityus scorpion sting in Brazil and gives the vials.
- Spider Bite Severity and Antivenom in Brazil (Phoneutria, Loxosceles) Classes a spider bite in Brazil and gives the vials.
- Lonomia Caterpillar Contact: Severity and Antivenom (Brazil) Classes a Lonomia caterpillar contact in Brazil.
- Kala-Azar and PKDL Treatment by Region (WHO 2026) Gives the WHO 2026 kala-azar or PKDL regimen by region.
- Cutaneous Leishmaniasis in the Americas: Local or Systemic Treatment? (PAHO 2022) Decides local or systemic treatment for cutaneous leishmaniasis (PAHO 2022).
- Chagas Disease: Stage, Whether to Treat, and Benznidazole or Nifurtimox Dose Stages Chagas disease and says whether to treat (SBC 2023, PAHO 2019).
- Infant HIV Prophylaxis: Risk Group and Nevirapine Dose (WHO Dec 2025, dosing May 2026) Gives infant HIV prophylaxis by WHO risk group (December 2025).
- Pediatric ARV Doses by Weight (WHO May 2026, corrigendum June 2026) Gives pediatric ARV doses by weight band (WHO May 2026).
- Rabies Post-Exposure Prophylaxis: WHO Categories and Schedules (2018) Gives WHO rabies post-exposure prophylaxis by exposure category and vaccination history.
Pediatrics & Neonatal
- F-75 Volume per Feed in Severe Malnutrition Stabilization (WHO) Gives the F-75 volume per feed for a severely malnourished child in stabilization.
- F-100 Range and RUTF Sachets per Day in Severe Malnutrition (WHO) Gives F-100 per feed or RUTF sachets a day for a severely malnourished child.
- Rehydration, Shock and Low Blood Sugar in Severe Malnutrition (WHO) Gives the WHO volumes for a severely malnourished child in an emergency.
- Weight Gain in g/kg/day During Severe Malnutrition Treatment (WHO) Gives daily weight gain in g/kg/day during severe malnutrition treatment.
- WHO Eight-Contact Antenatal Schedule: Which Visit and When Is the Next Gives the WHO eight-contact antenatal schedule for a gestational age.
- Low Birth Weight and Preterm Categories (WHO 2022) Gives the WHO low-birth-weight and preterm categories for a birth weight and gestational age.
- Preventive Iron and Iron-Folic Acid Doses (WHO) Gives WHO preventive iron doses by group.
- Newborn Temperature: Cold Stress and Hypothermia Grades (WHO) Grades a newborn temperature by WHO 1997.
- Low Blood Sugar in a Newborn: WHO Thresholds and Treatment Applies WHO newborn glucose thresholds.
- Vitamin A Dose for a Child: Routine, Diarrhea, Measles or Eye Signs (WHO) Gives the WHO vitamin A dose for a child under 5 by reason.