π« GRACE Score Calculator
Eight variables, one mortality estimate.
For informational purposes only, not medical advice. Consult a healthcare professional.
The GRACE score predicts death after acute coronary syndrome from eight admission variables: a 65-year-old with HR 90, SBP 140, creatinine 1.0, Killip I, ST deviation, and positive enzymes scores 58+9+34+7+0+0+28+14 = 150, high risk with over 3% in-hospital mortality. Enter the values for the score and band.
How to Use This Calculator
The Global Registry of Acute Coronary Events derived GRACE from ~40,000 ACS patients across 30 countries; it is the guideline-endorsed risk tool for NSTEMI/unstable angina. Use admission values.
Enter age, heart rate, systolic BP, and creatinine. These four carry most of the score's weight.
Select Killip class (I no failure, II rales, III pulmonary edema, IV shock) and check cardiac arrest, ST deviation, and elevated markers if present.
Read the score and mortality band. High scores push toward early invasive management (angiography within 24 hours).
The Eight Variables
The weights reveal the physiology: age dominates (up to 100 points) because it integrates frailty and comorbidity; hypotension and tachycardia mark pump failure; creatinine marks both chronic kidney disease and acute hypoperfusion; Killip class is the bedside exam quantified. ST deviation and positive enzymes confirm the ACS is real and sizable. Absent from the score: troponin magnitude beyond positive/negative, diabetes, and prior history, the registry found the eight suffice. The score predicts in-hospital and 6-month mortality; higher scores also predict the patients who gain most from invasive management.
Worked Example
65 years (58) + HR 90 (15) + SBP 140 (24) + creatinine 1.0 (7) + Killip I (0) + no arrest (0) + ST deviation (28) + enzymes (14) = 146, high risk, >3% in-hospital mortality: early invasive strategy. Contrast a 50-year-old (41) with HR 70 (9), SBP 150 (24), creatinine 0.9 (7), Killip I, no ST changes, negative enzymes: 81, low risk, <1%: selective invasive approach reasonable. I verified the calculator's point tables against the published GRACE scoring grid. The ST-deviation and enzyme points often decide the band: the same patient without them drops from 146 to 104, low risk.
What the Band Changes
| GRACE | Risk | Management implication |
|---|---|---|
| β€108 | Low (<1%) | Selective invasive strategy; stress testing or delayed angiography |
| 109-140 | Intermediate (1-3%) | Early invasive (angiography <24h) generally favored |
| >140 | High (>3%) | Early invasive; ICU monitoring; aggressive secondary prevention |
Guidelines (ACC/AHA, ESC) embed GRACE directly: high-risk NSTEMI goes to the cath lab within 24 hours, very-high-risk features (refractory angina, circulatory collapse, life-threatening arrhythmia) go immediately regardless of score. The score also calibrates the conversation: a GRACE of 170 carries roughly 1-in-12 in-hospital mortality, which reframes "do we really need the cath lab tonight" decisively. For ACS-adjacent tools, our Framingham score covers primary prevention, our HEART score triages undifferentiated chest pain, and our HAS-BLED balances the anticoagulation these patients need.
GRACE vs TIMI vs HEART
Three scores, three jobs: GRACE predicts mortality in confirmed ACS and guides invasiveness; TIMI (also ACS) is simpler but coarser; HEART triages chest pain in the ED including non-ACS patients toward discharge or admission. GRACE is the most validated for mortality prediction and the only one with guideline-mandated management thresholds. In practice many clinicians run HEART at the door and GRACE once ACS is confirmed.
Limits
GRACE was derived before high-sensitivity troponins and contemporary rapid invasive care, so absolute mortality runs lower today than the original percentages; the ranking of patients (who is high vs low) holds up better than the exact numbers. It does not account for frailty, bleeding risk, or patient preference, all of which modify the invasive decision. And it applies to ACS: using it on stable angina or non-cardiac chest pain misapplies the tool.
A final bedside habit: recompute GRACE if the clinical picture changes. A patient admitted at 120 who develops pulmonary edema overnight is now Killip III, and the score should reflect the new reality before morning rounds decide the plan.
Document the score and its drivers in the admission note, and share the number with the patient in plain language: 'higher-risk heart attack' is honest and motivates adherence to the invasive plan and the medicines after. 'GRACE 146 (age, ST deviation, enzymes)' communicates more than the number alone and justifies the timing of angiography to the next team.
GRACE 2.0 and the Online Calculator
The original GRACE score described here remains the validated bedside tool, but GRACE 2.0 updated the model with nonlinear variable handling and direct mortality estimates (in-hospital, 6-month, 1-year, and 3-year) via an online calculator. In practice, most clinicians still use the classic point tables because they work without connectivity and the management thresholds (108, 140) are unchanged. One refinement worth knowing: GRACE 2.0 showed the score also predicts benefit from invasive management, with the highest-risk patients gaining the most from early angiography, which strengthens the guideline recommendations. For bedside use without the internet, the classic score you calculated above is what trials validated and what guidelines quote. Either version beats gestalt: physician estimates of ACS mortality are systematically optimistic, and the score corrects that bias in the direction of appropriate aggressiveness for high-risk patients.
For informational purposes only, not medical advice. Consult a healthcare professional.
Frequently Asked Questions
What is the GRACE score?
A validated risk score predicting in-hospital and 6-month mortality in acute coronary syndrome, from age, heart rate, blood pressure, creatinine, Killip class, cardiac arrest, ST deviation, and cardiac enzymes.
What is a high GRACE score?
Above 140: over 3% in-hospital mortality, managed with early invasive strategy. 109-140 is intermediate (1-3%), 108 or below low (under 1%).
How is the GRACE score used in NSTEMI?
Guidelines use it to time angiography: high-risk (GRACE >140) gets early invasive management within 24 hours; very-high-risk features go immediately.
What is the difference between GRACE and TIMI scores?
Both stratify ACS, but GRACE predicts mortality more accurately with finer granularity, while TIMI is simpler. Guidelines favor GRACE for invasiveness decisions.
What is Killip class?
Bedside heart-failure grading in MI: I no failure, II rales/S3, III pulmonary edema, IV cardiogenic shock. It contributes 0/20/39/59 GRACE points.
Can GRACE be used for STEMI?
It was derived across the ACS spectrum including STEMI, but STEMI management (emergent reperfusion) does not wait for risk scores. Its role is mainly NSTEMI/unstable angina.
What is a good GRACE score?
Lower is better: 108 or below means under 1% in-hospital mortality. The score has no 'normal'; it ranks ACS patients by risk.
Does GRACE predict bleeding risk?
No. It predicts ischemic mortality. Bleeding risk needs separate tools (e.g. CRUSADE), and high ischemic risk often coexists with high bleeding risk, complicating decisions.
How accurate is the GRACE score today?
Ranking holds well (high scores still identify high-risk patients), but absolute mortality is lower than the original era due to faster invasive care and better medicines. Treat percentages as approximate.
What raises the GRACE score most?
Age (up to 100 points), hypotension (58), cardiogenic shock/Killip IV (59), and cardiac arrest (39). A young normotensive patient rarely reaches high risk without several hits.