🩺 Built by a Doctor · Free · India

Free Medical Calculators
for India

Clinically accurate tools for doctors, nurses, and patients — following Indian guidelines, BTS, IDSA, IAP, FOGSI, and WHO standards where they apply.

Indian BMI Cutoffs UIP Vaccine Schedule ARV / Rabies PEP CURB-65 · NEWS2 · GCS Anion Gap · eGFR · HbA1c Child-Pugh · Ca²⁺ Correction Wells Score · Burns ObsCalc · Bishop · Apgar Neonatal Jaundice FOGSI · WHO · NCDC
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Evidence-based guidelines
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Rabies ARV Vaccine Date Calculator
Calculate all 4 anti-rabies vaccine injection dates (Days 0, 3, 7, 28) after a dog bite · Essen regimen · India · Most visited tool
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All calculators
🚨 Emergency & Critical Care
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CURB-65 Calculator
Pneumonia severity score with 30-day mortality risk and BTS-guideline-based admission decisions for CAP.
PneumoniaMortality RiskBTS Guidelines
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NEWS2 Calculator
National Early Warning Score 2 — SpO₂ Scale 1 & 2, ACVPU, with RCP clinical response thresholds.
Acute DeteriorationICU TriggersRCP 2017
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GCS Calculator
Glasgow Coma Scale for adults and pediatric patients (Adelaide scale). Supports intubated T modifier and TBI severity classification.
NeurologyAdult + PediatricIntubated (T)
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Burn & Parkland Calculator
Rule of Nines TBSA estimation with 24-hour Parkland formula fluid resuscitation plan. Adult and pediatric.
Rule of NinesParkland Formula4mL/kg/%TBSA
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Wells Score — DVT & PE
Pre-test probability for DVT and Pulmonary Embolism with NICE-guideline D-Dimer and imaging pathways.
DVT · PED-Dimer · CTPANICE Guidelines
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Anion Gap Calculator
Calculate anion gap with albumin correction. Identify high-AG vs normal-AG metabolic acidosis and delta-delta ratio.
Metabolic AcidosisAlbumin CorrectedDelta-Delta
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👶 Pediatrics & Neonatology
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Neonatal Jaundice Calculator
Phototherapy thresholds for newborns ≥35 weeks by age-in-hours. Neurotoxicity risk factors. AAP 2022 & IAP guidelines.
AAP 2022IAP GuidelinesPhototherapy
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Pediatric Asthma Action Plan
Green/Yellow/Red zone guide for child asthma management. Medication actions, emergency signs, and WhatsApp sharing for parents.
GINA 2024Zone-BasedPrintable
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UIP Vaccine Tracker
Complete child immunisation schedule from birth to 16 years. Mark vaccines given, track overdue doses, get next visit date.
BCG · OPV · DPTMMR · IPV · PCVUIP + IAP 2024
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Child Growth Chart
Weight, height, BMI and head circumference Z-scores with SAM/MAM/stunting classification. WHO 0–5 yrs · IAP 2015 5–18 yrs.
WHO PercentilesSAM · MAMZ-Score
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Child Milestones Tracker
Check developmental milestones by age — speech, motor, social skills. Identify delays early with red flag alerts.
0–5 YearsMotor · SpeechRed Flags
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Paracetamol Dose Calculator
Exact dose by weight (15mg/kg) or age. Syrup volumes for 125mg and 250mg/5ml, tablet counts, max daily dose and fever warning signs.
15 mg/kg dosingCalpol · Dolo · CrocinChild + Adult
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ORS Rehydration Calculator
Calculate exact ORS volumes for mild and moderate dehydration by weight. Zinc dose, ORS prep guide and hospital warning signs.
WHO Plan A & BZinc IAP guidelineSevere referral
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🏥 General Medicine & Dosing
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Drug Dose Calculator
Weight-based doses for antibiotics, antipyretics and emergency drugs. Enter your medicine's concentration for exact volumes.
mg/kg dosingPaediatric + AdultCustom drugs
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BMI Calculator India
BMI with Indian cutoffs (overweight ≥23, obese ≥25). Waist circumference risk, ideal weight range, WHO comparison.
Indian CutoffsWaist RiskAdult + Child
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eGFR Calculator
Estimate kidney function using CKD-EPI 2021 equation. CKD staging, dose adjustment flags, and nephrology referral thresholds.
CKD-EPI 2021CKD StagingDose Adjustment
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HbA1c Converter
Convert HbA1c between % (NGSP) and mmol/mol (IFCC). Estimated average glucose, diabetes control classification per ADA/ICMR.
NGSP ↔ IFCCeAG · ADAICMR Guidelines
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Corrected Calcium
Adjust serum calcium for hypoalbuminaemia. Identifies hypocalcaemia and hypercalcaemia masked by low albumin.
HypoalbuminaemiaCa²⁺ CorrectionHypo/Hypercalcaemia
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Child-Pugh Score
Liver disease severity scoring — Class A, B, C with 1-year and 2-year survival estimates. Guides surgical risk and transplant listing.
Liver CirrhosisClass A · B · CSurgical Risk
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🤰 Obstetrics & Gynaecology
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ObsCalc — Obstetric Suite
10 obstetric tools — gestational age, EFW Hadlock, Bishop score, Apgar, GDM dates, VBAC eligibility and PPH risk.
Bishop · Apgar · VBACEFW HadlockFOGSI · ACOG
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Due Date Calculator
Calculate pregnancy due date from LMP, IVF transfer or ultrasound. Week-by-week milestones, scan reminders and symptoms guide.
LMP · IVF · UltrasoundWeek by WeekScan Reminders
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Why These Calculators Use Indian & International Guidelines

Many standard medical calculators use Western or WHO cutoffs that are not always appropriate for all clinical settings. The BMI calculator uses Indian-specific thresholds (overweight ≥23, obese ≥25) because Indians develop metabolic disease at lower BMI values. Rabies PEP follows the 4-dose Essen regimen per NCDC India. Obstetric tools follow FOGSI and DIPSI protocols. Emergency scoring tools — CURB-65, NEWS2, GCS, and Wells Score — follow BTS, RCP, and NICE guidelines, which are internationally validated and widely used in Indian tertiary care settings. The HbA1c converter uses both ADA and ICMR thresholds for diabetes classification.

About These Tools

All tools are built and maintained by a practising doctor in India. Intended for clinical use by healthcare professionals and for patient education. No data is collected or stored on any server — all calculations happen in your browser. Vaccination records in the UIP tracker are saved only on your own device.

Disclaimer

For informational and clinical reference purposes only. These tools do not replace clinical judgement or consultation with a qualified healthcare professional. Always verify doses, schedules, and cutoffs against current guidelines for individual patient decisions.