What the GCS Calculator Does
The Glasgow Coma Scale (GCS) Calculator is a clinical scoring tool used worldwide to assess a patient's level of consciousness, most commonly after a head injury, stroke, or other neurological event. It converts three bedside observations — eye opening, verbal response, and motor response — into a single number between 3 and 15 and instantly classifies the brain injury severity. It is widely used by paramedics, nurses, emergency physicians, and medical students.
How to Use It
Select one option from each of the three response categories. Each category has a fixed range of scores:
- Eye Response (1–4): 4 = opens eyes spontaneously, 3 = opens to voice, 2 = opens to pain, 1 = no eye opening.
- Verbal Response (1–5): 5 = oriented and conversing normally, 4 = confused, 3 = inappropriate words, 2 = incomprehensible sounds, 1 = no verbal response.
- Motor Response (1–6): 6 = obeys commands, 5 = localizes to pain, 4 = withdraws from pain, 3 = flexion to pain, 2 = extension to pain, 1 = no motor response.
The calculator adds the three selections together to produce a total and an interpretation.
The Formula
The total GCS score is simply the sum of the three components:
The minimum possible score is 3 (1 + 1 + 1) and the maximum is 15 (4 + 5 + 6). The calculator then classifies severity using these standard thresholds:
- Mild: total of 13 or higher
- Moderate: total of 9 to 12
- Severe: total of 8 or below
Worked Example
Suppose a patient opens their eyes only in response to voice (Eye = 3), speaks in confused, disoriented sentences (Verbal = 4), and withdraws from a painful stimulus (Motor = 4). The total is:
A score of 11 falls in the 9–12 range, so the calculator reports a severity of Moderate brain injury.
使用注意事項與精準校對原則（6 大核心守則）
📐 1. 嚴格對齊輸入量綱與單位
輸入各項數值時請務必確認量綱（例如小時、天數、金額、百分比），避免單位不匹配引發推算偏差。
🔒 2. 純前端本機毫秒級隱私保障
所有計算邏輯 100% 在您的終端瀏覽器內完成，資料絕不上傳伺服器，嚴格守護商業與個人隱私。
📊 3. 符合公認學術與產業計算模型
演算法嚴格遵循國際通用數學公式與標準計算模型，經多重情境交叉核對，數值嚴密精確。
📋 4. 一鍵複製與免登入 PDF 匯出
支援一鍵複製推算結果字串至剪貼簿，亦可直接點擊列印按鈕輸出純淨 PDF 工作報表。
🔄 5. 多情景敏感度動態對比
建議針對極端值與多組預期情景分別試算，觀察輸出數據的波動區間，輔助做出更穩健的決策。
🛡️ 6. 專業諮詢與日常參考免責聲明
本工具運算結果供日常排程、學業研習與事前參考之用，如涉及重大法規或投資決策請諮詢持證專家。