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Eoc Calculator

Eoc calculator works out Score and Letter grade from Graded items, Curve added and Grading scale. The default figures on this page give score of 83.60 %; change any entry and the result, the working and the sources update together.

Score
83.60 %
Test Grade Calculator
Letter grade
B
Grade points (4.0 scale)
3.00
Points earned
83.6
Points possible
100
Points lost
16.4
Score before the curve
83.6000 %
Passing?
Yes
Grading scale used
10-point scale with plus/minus
Total weight
100.0000
Worked out from University of California - Admissions, GPA requirement: how to calculate your UC GPA and 5 other sources.

Your figures

Updates as you type
One item per line as "Name: score, weight". The weight may be a percentage of the course, a point value, or anything proportional. A score may be written 88, 88% or 44/50. Leave the weight off for an item that counts once. In average mode every weight is taken as 1.
Percentage points added to the raw score before the letter is assigned.
Letter:minimum percent pairs, e.g. "A:93, A-:90, B+:87, B:83, F:0".
The rounded percentage is what the letter grade is assigned from, matching gradebook practice.

How this is worked out

4 steps
  1. Weighted mean = (85 x 80 + 78 x 20) / 100 = 83.6%
  2. Percentage = 83.6 / 100 x 100 = 83.6%
  3. Rounded to 2 decimal place(s): 83.6%
  4. On the 10-point scale with plus/minus, 83.6% is a B.
Score needed for each gradetable
letterminPercentminPoints
A+9797
A9393
A-9090
B+8787
B8383
B-8080
C+7777
C7373
C-7070
D+6767
D6363
D-6060
F00
Graded items and their contributiontable
namescoreweightshareOfGradecontribution
Coursework85808068
End-of-course exam78202015.6

Figures from grade point scales, checked 31 August 2026. Its 10 worked examples are re-run on every release, last on 15 September 2026. What changed · how reference data is kept current

Sources and references

6 sources
University of California - Admissions, GPA requirement: how to calculate your UC GPA
Source for the UC scale: A=4, B=3, C=2, D=1, pluses and minuses do not count; one extra point per semester of a UC-approved honors course, D and F earn no honors point; at most 8 honors points between 10th and 11th grade and at most 4 of them from 10th grade; only a-g courses taken from the summer after 9th grade through the summer after 11th grade count.
US Department of Education, National Center for Education Statistics - High School Transcript Study methodology, standard grade-point conversion
Source for the conventional unweighted 4.0 scale used to convert transcript letter grades to grade points (A=4.0, B=3.0, C=2.0, D=1.0, F=0.0).
College Board - How to Convert Your GPA to a 4.0 Scale
Source for the plus/minus 4.0 scale (A+/A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, C- = 1.7, D+ = 1.3, D = 1.0, D- = 0.7, F = 0.0) and the letter-to-percentage bands used with it.
National Association of Secondary School Principals / common US district practice - the 10-point and 7-point percentage grading scales
The 10-point scale (A 90-100, B 80-89, C 70-79, D 60-69, F below 60) is the dominant US convention; the 7-point scale (A 93-100, B 85-92, C 77-84, D 70-76, F below 70) is used by a minority of districts. Both are published district policy rather than a national standard, so the engine lets the user edit the cut-offs.
Weighted arithmetic mean: weighted_mean = sum(value x weight) / sum(weight)
The standard definition used for a weighted gradebook, matching the WEIGHTED-MEAN contract in the research corpus.
GED Testing Service, Understanding Your Scores: 100-200 score scale, 145 passing, 165 GED College Ready, 175 GED College Ready + Credit
Used only by the GED preset, expressed as percentages of the 200-point scale (145/200 = 72.5%, 165/200 = 82.5%, 175/200 = 87.5%).

What the eoc calculator calculates

Converts a test or assignment score into a percentage and a letter grade on the grading scale you choose, averages a gradebook with or without category weights, scores an answer key with negative marking, and shows the score needed for every other letter.

How to use this eoc calculator

Enter Graded items, Curve added, Grading scale and Custom grade bands. Score updates as you type. Change one figure at a time to see what drives the result.

How the result is worked out

Open “How this is worked out” beside the result for the step-by-step calculation behind Score, Letter grade and Grade points (4.0 scale).

The method follows University of California - Admissions, GPA requirement: how to calculate your UC GPA, US Department of Education, National Center for Education Statistics - High School Transcript Study methodology, standard grade-point conversion, College Board - How to Convert Your GPA to a 4.0 Scale, National Association of Secondary School Principals / common US district practice - the 10-point and 7-point percentage grading scales and Weighted arithmetic mean: weighted_mean = sum(value x weight) / sum(weight).

What you can compare

Change one input at a time to see how it affects Score, Letter grade and Grade points (4.0 scale). The inputs you can vary are Graded items, Curve added, Grading scale, Custom grade bands, Passing mark and Allow scores above 100%.

Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.

Embed this calculator on your website

Copy this code into any page. The calculator appears with the figures currently entered, sizes itself to fit, and a small credit line links back here. Free, no account, no ads inside it, no tracking of your readers. Set your own figures and fixed fields; Personal removes the credit line, sets your colour and shows you which sites use it.

Preview

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Frequently asked questions

Can I use a calculator on the EOC?

Converts a test or assignment score into a percentage and a letter grade on the grading scale you choose, averages a gradebook with or without category weights, scores an answer key with negative marking. Put your own figures in above and the working updates beside the result. For scale, the default figures on this page give 83.60 %.

What is a scale score eoc?

Converts a test or assignment score into a percentage and a letter grade on the grading scale you choose, averages a gradebook with or without category weights, scores an answer key with negative marking. On this page it is computed from Graded items, Curve added and Grading scale and shown as Score, Letter grade and Grade points (4.0 scale).

What information do I need for the eoc calculator?

You need Graded items, Curve added, Grading scale, Custom grade bands, Passing mark and Allow scores above 100%. The page opens with default figures that give score of 83.60 %, so you can see the scale before entering your own.

What does this eoc calculator show?

It shows Score, Letter grade, Grade points (4.0 scale), Points earned, Points possible, Points lost, Score before the curve and Passing?, with the working and any warnings for your entries.

Can I check how the eoc calculator result was calculated?

Yes. The “How this is worked out” section shows the calculation steps, and the sources section identifies the references used for the method.

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