CURB-65 Community-Acquired Pneumonia Severity & Inpatient Admission Calculator

Evaluate pneumonia 30-day mortality risk and outpatient vs. ICU care via CURB-65 (0–5).

CURB-65 Pneumonia Severity Score
2 points (0–5)
Estimated 30-Day Mortality Risk 6.8 %
CRB-65 Bedside Score (No Lab BUN) 1 pts (0–4)
Total Positive Risk Criteria 2 criteria
Inputs
⚡ Scenarios:
0 or 1
New-onset mental confusion (1 = yes, 0 = no).
0 or 1
BUN > 19 mg/dL (or Urea > 7 mmol/L) (1 = yes, 0 = no).
0 or 1
Respiratory rate ≥ 30 breaths/min (1 = yes, 0 = no).
0 or 1
Systolic BP < 90 mmHg or Diastolic BP ≤ 60 mmHg (1 = yes, 0 = no).
0 or 1
Age ≥ 65 years (1 = yes, 0 = no).
Results & Graph
CURB-65 Pneumonia Severity Score
2 points (0–5)
Estimated 30-Day Mortality Risk
6.8 %
CRB-65 Bedside Score (No Lab BUN)
1 pts (0–4)
Total Positive Risk Criteria
2 criteria

CURB-65 Pneumonia Severity Score

Graph 1 • CURB-65 Pneumonia Score • Domain Architecture & Live Telemetry Maps New Onset Confusion0or1, Bun Over19 Mg Dl0or1, Respiratory Rate30 Or More0or1 through CURB-65 Pneumonia Score Formula.
CURB-65 Pneumonia Score • Clinical & Physiological Reference Scale Low / Baseline Target / Reference Elevated / Watch High / Action CURB-65 Pneumonia Severity Score: 2 points (0–5) Estimated 30-Day Mortality 6.8 % CRB-65 Bedside Score (No L 1 pts (0–4) Total Positive Risk Criter 2 criteria
Graph 2 • CURB-65 Pneumonia Severity Score Across New Onset Confusion0or1 Sweep (40% → 160%) Evaluates CURB-65 = Confusion (1) + BUN>19 (1) + RR≥30 (1) + SBP<90_or_DBP≤60 (1) across 7 operating points (current input highlighted).
0 points 1.65 points 3.30 points 3 4 3 6 3 8 3 10 3 12 3 14 3 16
Graph 3 • Joint Sensitivity: New Onset Confusion0or1 × Bun Over19 Mg Dl0or1 Compares CURB-65 Pneumonia Severity Score when Bun Over19 Mg Dl0or1 is shifted +25% (solid) vs. −25% (dashed).
0 points 1.65 points 3.30 points --- Bun Over19 Mg Dl0or1 @ 75% 3 -30% 3 -15% 3 +0% 3 +15% 3 +30%
Summary: CURB-65 score is 2/5 (Estimated 30-day mortality ~6.8%; CRB-65 bedside score without BUN is 1/4).
Summary: CURB-65 score is 2/5 (Estimated 30-day mortality ~6.8%; CRB-65 bedside score without BUN is 1/4).
⚡ Send result to: BMI →Calorie & TDEE →Pace, 1RM & HR Zones →
Interactive chart & math engine powered by CalculatorGraph

Formula & Mathematical Methodology: CURB-65 Pneumonia Score Formula

CURB-65 = Confusion (1) + BUN>19 (1) + RR≥30 (1) + SBP<90orDBP≤60 (1) + Age≥65 (1)
CURB-65 = Confusion (1) + BUN>19 (1) + RR≥30 (1) + SBP<90_or_DBP≤60 (1) + Age≥65 (1)
  • newOnsetConfusion0or1: New Onset Confusion0or1 (0 or 1)
  • bunOver19MgDl0or1: Bun Over19 Mg Dl0or1 (0 or 1)
  • respiratoryRate30OrMore0or1: Respiratory Rate30 Or More0or1 (0 or 1)
  • lowBloodPressure0or1: Low Blood Pressure0or1 (0 or 1)
  • age65OrOlder0or1: Age65 Or Older0or1 (0 or 1)

Rounding: Clinical scores round to statutory integer or decimal precision; physiological metrics round to 2 decimal places.

Worked Example: Clinical / Physiology Scenario: CURB-65 Pneumonia Score

Evaluate pneumonia 30-day mortality risk and outpatient vs. ICU care via CURB-65 (0–5).

  1. Enter lab values, anthropometric measurements, or performance test metrics.
  2. Evaluate the reference equation: CURB-65 = Confusion (1) + BUN>19 (1) + RR≥30 (1) + SBP<90_or_DBP≤60 (1) + Age≥65 (1).
  3. Inspect the primary classification, supporting indices, and 3 SVG charts.
Result: Computes CURB-65 Pneumonia Score via CURB-65 = Confusion (1) + BUN>19 (1) + RR≥30 (1) + SBP<90_or_DBP≤60 (1) + Age≥65 (1).

Frequently Asked Questions

How does the CURB-65 Community-Acquired Pneumonia Severity & Inpatient Admission Calculator compute its result?

It evaluates CURB-65 = Confusion (1) + BUN>19 (1) + RR≥30 (1) + SBP<90_or_DBP≤60 (1) + Age≥65 (1) directly in your browser and updates three custom SVG visualizations in real time.

Can I use Goal Seek to solve backwards for a target lab value or pace?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any numeric input parameter.

Are my health and biometric inputs kept private?

Yes. All calculations run 100% locally on your device with zero external transmission.

Health & Fitness · Neurology, Trauma & Emergency

CURB-65 Community-Acquired Pneumonia Severity & Inpatient Admission Calculator: inputs, method, and how to read the result

Evaluate pneumonia 30-day mortality risk and outpatient vs. ICU care via CURB-65 (0–5).

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • New Onset Confusion0or1: New-onset mental confusion (1 = yes, 0 = no).
  • Bun Over19 Mg Dl0or1: BUN > 19 mg/dL (or Urea > 7 mmol/L) (1 = yes, 0 = no).
  • Respiratory Rate30 Or More0or1: Respiratory rate ≥ 30 breaths/min (1 = yes, 0 = no).
  • Low Blood Pressure0or1: Systolic BP < 90 mmHg or Diastolic BP ≤ 60 mmHg (1 = yes, 0 = no).

What the calculation includes

With the default values shown, CURB-65 Pneumonia Severity Score is 2 points (0–5). The calculation follows CURB-65 Pneumonia Score Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing New Onset Confusion0or1 from 0 0 or 1 to 1 0 or 1 changes CURB-65 Pneumonia Severity Score from 2 points (0–5) to 3 points (0–5). This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses peer-reviewed clinical and sports physiology formulas.
  • For educational and informational reference only; clinical scores do not replace physician judgment or laboratory reference ranges.

Scope: Global Clinical & Sports Science Consensus Check the assumptions and limitations against your situation before relying on the estimate.

More in Health & Fitness: BMI Calculator (Body Mass Index), Calorie Needs & TDEE Calculator, Running Pace, One-Rep Max (1RM), Target Heart Rate & Calories Burned Calculator.