GPA Calculator
Calculate a credit-weighted GPA with editable letter grades, numeric grade points and course contributions.
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How to use the gpa calculator
Each block explains one part of how this works and how to read the result.
Choose your method and enter inputs
Calculate a credit-weighted GPA with editable letter grades, numeric grade points and course contributions.
Choose the calculation mode or grading scale, then replace the example inputs with your own values. Check the credits, weights or selected scoring profile before calculating.
Formula and methodology
GPA = sum(grade points x credits) / sum(counted credits).
The calculation breakdown lists what was counted and which rules were applied. Data-backed results identify their source and version; changing inputs clears a previous result so it cannot be mistaken for a new calculation.
Worked example
An A in 3 credits and a B+ in 4 credits give (4 x 3 + 3.3 x 4) / 7 = 3.60.
Assumptions and limitations
Schools set their own grade mappings, weighting and repeat-course rules. This tool does not replace an institutional transcript calculation.
Check the result's method and linked source. A practice profile or planning estimate should be interpreted within its stated assumptions.
Frequently asked questions
How does the gpa calculator calculate its result?
GPA = sum(grade points x credits) / sum(counted credits).
Can I use this without an account?
Yes. The tool is free and does not require a login. Financial worksheets calculate in your browser; DOI metadata is retrieved from Crossref.
What assumptions should I check?
Schools set their own grade mappings, weighting and repeat-course rules. This tool does not replace an institutional transcript calculation.
Can I access the same calculation through an API?
Yes. Use /api/tools/gpa-calculator. Structured arrays and financial inputs use a JSON POST body. The API returns calculation steps and source provenance.
US grades and GPA
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Developer API
POST JSON to /api/tools/gpa-calculator. The browser and API share the same deterministic engine. Financial inputs use POST only and responses are not cached. The service does not store your financial inputs.
Response fields: title, value, metrics, steps, rows, warnings, provenance. Citation responses also include normalized metadata and in-text citations.
Example JSON request
{
"scale": "plusMinus",
"customScale": "",
"courses": [
{
"name": "Composition",
"grade": "A",
"credits": 3
},
{
"name": "Statistics",
"grade": "B+",
"credits": 4
}
]
}
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