Free · No Login · Used Worldwide

Clinical tools
built by a
doctor in India

27+ free medical calculators following NCDC, IAP, FOGSI and WHO guidelines — designed for real-world Indian clinical practice. Works on any device, no login, no data stored.

Browse All 27 Calculators → 💉 Rabies PEP Scheduler
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💉
Rabies PEP Scheduler
Day 0 / 3 / 7 / 28 Essen IM regimen + RIG dose
NCDC 🫁
CURB-65
Pneumonia severity & admission decision
Emergency 🫘
eGFR Calculator
CKD-EPI 2021 · MDRD · Cockcroft-Gault
Renal 💧
IV Drip Rate Calculator
Drops/min · mL/hr · Infusion time
New 🤰
ObsCalc Suite
EDD · GA · Bishop Score · FOGSI guidelines
FOGSI
and 21 more calculators →
🇮🇳 Indian Guidelines First
🔒 No Patient Data Stored
📱 Works on Any Device
🆓 Free Forever
👨‍⚕️ Built by a Practicing Doctor
⚡ No Login Required
⭐ Featured Tools

Most Used This Month

The tools doctors reach for every day — quick, accurate, and clinically validated.

🐕 Infectious Disease · NCDC / WHO
💉
Rabies PEP
Vaccine Scheduler
Calculate exact vaccination dates for the 4-dose Essen IM regimen (Days 0, 3, 7, 28). Includes RIG dose by body weight, wound category classification, and intradermal option. NCDC India & WHO 2018 guidelines.
Open Scheduler →
4-dose Essen IM RIG dose calculator Category I / II / III WHO 2018
🐾
ARV Dose Calculator
Anti-rabies vaccine & RIG dose by weight. Essen IM & intradermal regimens.
› 🫁
CURB-65 Pneumonia Score
Severity classification & hospital admission decision tool.
› 💧
IV Drip Rate Calculator
Drops/min, mL/hr & infusion time. Macro & micro drip sets.
›
💧 New Tool — Nursing & Clinical
IV Drip Rate Calculator
Drops/min · mL/hr · Infusion time — try it right here
Full page with FAQ →

Formula Reference

Drops/min = (Vol × Drip Factor) ÷ Time (min)
mL/hour = Volume ÷ Time (hrs)
Time (hrs) = Volume ÷ mL/hr
SetFactorUse
Standard adult15 gtts/mLMacro
Large bore10 gtts/mLMacro
Filtered20 gtts/mLMacro
Paediatric60 gtts/mLMicro
🩺 Clinical Tools

6 Essential Calculators

See All 27 Tools →
📉Critical Care
NEWS2 Score
National Early Warning Score for clinical deterioration. Triggers escalation thresholds.
🧠Emergency
GCS Calculator
Glasgow Coma Scale — eye, verbal, motor. With TBI severity classification.
💧Nursing
IV Drip Rate
Drops/min, mL/hr & infusion time. Macro & micro drip. Pump & gravity sets.
📏Paediatrics
Child Growth Chart
WHO/IAP LMS-method z-scores & percentiles. IAP 2015 BMI cutoffs.
🤰Obstetrics
ObsCalc Suite
EDD, gestational age, Bishop score, and more — built to FOGSI standards.
🫘Renal
eGFR Calculator
CKD-EPI 2021, MDRD & Cockcroft-Gault with CKD staging and drug dosing guide.
💡 Why RxMedCalc

Designed for Doctors Worldwide

Not a generic tool ported from abroad. Every calculator is built with India's clinical context in mind.

🇮🇳
Indian Guidelines First
Every tool uses NCDC, IAP, FOGSI, and Jindal spirometry reference values — not just Western equivalents. Indian BMI cutoffs, Indian vaccine schedules, Indian rabies protocols.
🔒
Zero Data Transmitted
All calculations run entirely in your browser. No patient data is ever sent to any server. No login, no account, no data retention. Safe for clinical use.
📱
Works Anywhere
Mobile-first design for ward rounds. Runs on any device, any browser, with slow connections. No app install needed. Add to home screen for offline access.

Guideline References

Every calculator cites its source. These are the bodies we follow.

NCDC India
IAP 2015 / 2023
FOGSI
WHO 2018
NICE
BTS
CKD-EPI 2021
KDIGO / AKIN
AAP / Bhutani
RCOG
Jindal Spirometry
BMW Rules 2016
NHP India
GINA

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Open All 27 Calculators → About This Project
👨‍⚕️

Built by a Practicing Indian Physician

RxMedCalc is built and maintained by an MBBS doctor with AFIH certification, currently working in a government health setting in Punjab. The goal is simple: fast, accurate, mobile-friendly clinical tools that work without the friction of enterprise medical software.

Read the full story →
⚠️

Medical Disclaimer: All tools are clinical decision-support aids intended for use by qualified healthcare professionals only. They do not replace clinical judgement, history, or examination. Always verify calculations independently before acting on them in patient care.