Compare GPAs across schools and years.
You can prepare and review a file here.
Developer details: model coverage & run
Compare a graduation GPA
Enter a final undergraduate GPA.
Harvard University · 2025
Nationwide · 2000
How to read this
The converted GPA puts the original GPA on the selected reference and graduation-year scale. The default benchmark is Nationwide in 2000; you can choose another reference.
The displayed GPA is the median of these chain medians. Their range shows chain disagreement; it is not an uncertainty interval.
Exact 4.0 uses the midpoint of its tied percentile interval before conversion. It can map below 4.0 in the reference cohort.
EXPLORER / THE GRADE INFLATION PROBLEM
A distribution that moves with time
Annual undergraduate GPAs across a fixed set of covered schools. Each school has equal weight. Exact 4.0s form a separate point mass, shown by the bubble.
Open this view with a private model bundle connected.
ACADEMIC ENDING YEAR
Covered-school composite, not a national student-population estimate. The school set and weights stay fixed within each window. The chain mix is descriptive while convergence is unresolved. Annual GPAs here differ from the final graduation GPAs used by the converter.
Step 1: Upload your spreadsheet
Try a sample spreadsheet
Each sample has two synthetic student records.
Files open in your browser. Only selected GPA and school-related fields are sent for conversion. Unselected data stays local.
Step 2: Select relevant columns
Advanced: layout, identifiers and additional records
Preview original data
A finality column takes precedence over this file-wide confirmation.
Check what leaves this browser
The first three selected records are shown below. Check that each mapped column contains the intended GPA information. The same fields are sent for every row, with degree-selection and correction settings and the shared reference. The service also receives connection metadata. Removing names does not establish anonymity.
Results are added to the original file in this browser. CSV stays CSV; Excel stays an Excel workbook.
Your original cells stay in the exported file.
Step 3: Results
Source rows
Inputs ready
Need review
Converted
Original columns plus results and row statuses.
Why deflate?
Grade Deflator translates GPAs to a common reference, so you can compare them across schools and years.