GRACE Score Calculator

How to Use This Calculator

1. Enter the 8 GRACE variables: age, heart rate, systolic BP, creatinine, Killip class, ST deviation, cardiac arrest, and enzyme elevation.
2. GRACE score and risk category update instantly.
3. Use the Risk Tier and Strategy tab to see ESC-guided invasive strategy timing.
4. Professional tier includes GRACE 2.0 notes and full mortality estimates.

Formula

Example

Frequently Asked Questions

• What is the GRACE score and when is it used? ▼
  The GRACE (Global Registry of Acute Coronary Events) score is a validated risk stratification tool for patients presenting with acute coronary syndrome (ACS), encompassing both NSTEMI and STEMI. It was derived from a prospective multinational registry of over 43,000 ACS patients and first published by Granger et al. in Archives of Internal Medicine in 2003. The score incorporates eight variables: age, heart rate, systolic blood pressure, serum creatinine, Killip class (a measure of heart failure severity), ST-segment deviation on ECG, cardiac arrest at admission, and elevated cardiac enzymes (troponin). These continuous and categorical inputs are converted to a numerical score using a nomogram, with total scores typically ranging from approximately 0 to 350. The GRACE score is used at the time of ACS presentation and provides two key outputs: in-hospital mortality risk and 6-month post-discharge mortality risk. Critically, it directly guides one of the most important ACS management decisions: whether and when to perform invasive coronary angiography. ESC 2023 NSTEMI guidelines recommend urgent angiography (within 24 hours) for GRACE > 140 and early angiography (24-72 hours) for intermediate scores.
• How does GRACE help decide invasive vs conservative ACS management? ▼
  The GRACE score provides a quantitative basis for the invasive vs conservative strategy decision in NSTEMI/UA, which is one of the most consequential decisions in acute cardiology. The ESC 2023 NSTEMI guidelines define risk tiers and corresponding strategies: a GRACE score > 140 is "very high risk" and mandates urgent coronary angiography within 24 hours — this group benefits most from immediate revascularization. A GRACE score of 109-140 indicates intermediate-to-high risk, where early invasive strategy within 24-72 hours is recommended over conservative management. A GRACE score < 109 represents low risk, where a conservative (ischemia-guided) strategy is reasonable, and elective angiography may be performed if ischemia testing is positive. Beyond timing, GRACE also helps determine the intensity of antithrombotic therapy: high-risk patients typically receive dual antiplatelet therapy plus anticoagulation, while very high-risk patients may receive more potent antiplatelet agents such as ticagrelor or prasugrel rather than clopidogrel. The ability to stratify these decisions numerically rather than relying on clinical gestalt is one of GRACE's major contributions to modern ACS care.
• What is the difference between GRACE 1.0 and GRACE 2.0? ▼
  GRACE 1.0 refers to the original 2003 scoring algorithm derived by Granger et al. from the GRACE registry, using eight variables converted through a published nomogram. GRACE 2.0, published by Fox et al. in the BMJ in 2014, is a significant refinement that addresses limitations of the original. Key improvements in GRACE 2.0 include: addition of two new variables (use of diuretics, which signals occult heart failure, and history of atrial fibrillation); direct output of predicted mortality percentages rather than requiring nomogram lookup; handling of missing variables through imputation algorithms; and improved calibration for the modern therapeutic era with widespread use of statins, beta-blockers, and early revascularization. GRACE 2.0 is available at the official gracescore.org website and is the version referenced in current ESC and AHA guidelines. The clinical interpretation thresholds remain similar, but the absolute mortality percentages may differ slightly between versions. For precision risk estimation in clinical practice, GRACE 2.0 is preferred; GRACE 1.0 with its nomogram remains useful for understanding the underlying variable weightings and when a quick bedside estimate is needed.
• How does GRACE compare to the TIMI score for ACS? ▼
  GRACE and TIMI are the two most widely used risk scores in ACS, but they differ substantially in design, variables, and discriminative ability. The TIMI risk score for UA/NSTEMI (Antman et al. 2000, JAMA) uses seven binary yes/no variables and produces a score from 0-7. Its simplicity makes it easy to apply at the bedside without calculation tools. The GRACE score, in contrast, uses continuous physiological variables (age as a continuous number, actual heart rate, blood pressure, creatinine) that provide finer granularity. Multiple head-to-head comparison studies have shown that GRACE has superior discrimination for both in-hospital and 6-month mortality, with c-statistics (area under the ROC curve) typically around 0.72-0.82 for GRACE versus 0.62-0.68 for TIMI. This difference is clinically meaningful: GRACE better identifies the truly low-risk patients who can be safely managed conservatively, reducing unnecessary angiography. ESC guidelines primarily endorse GRACE over TIMI for risk stratification, though TIMI remains popular in the United States and continues to be used in many institutions given its simplicity.
• What does a GRACE score above 140 mean for prognosis? ▼
  A GRACE score above 140 designates a patient in the "high risk" category with estimated in-hospital mortality of 3% or greater and 6-month post-discharge mortality exceeding 8%. In absolute terms, a score of 140-170 corresponds to roughly 3-5% in-hospital mortality, while scores above 170-200 can correspond to in-hospital mortality of 5-10% or higher, especially in the presence of cardiogenic shock (Killip Class IV) and cardiac arrest. Patients in this range have the greatest potential absolute benefit from rapid revascularization, and data from the GRACE registry and randomized trials (such as TIMACS and SWIFT-MI) confirm that early invasive strategy within 24 hours reduces mortality and recurrent MI in this population. A GRACE score above 140 should also trigger: admission to a monitored coronary care unit, more potent antiplatelet therapy (ticagrelor or prasugrel over clopidogrel), consideration of parenteral anticoagulation (fondaparinux or unfractionated heparin), and preparation for urgent angiography with potential PCI or CABG consultation. The GRACE score at admission is also used as a baseline for monitoring response to therapy and for discharge risk assessment.

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