Test Score Calculator

Grade {{ resultsReady ? computation.values.grade_label : '—' }} Raw score {{ resultsReady ? `${formatPoints(computation.values.raw_earned)} / ${formatPoints(computation.normalizedInputs.total_possible)}` : '—' }} Next band {{ nextBandBadge }}

Score entry:

Use missed answers for a quick grader, or earned points for partial-credit tests.

{{ scoreValueLabel }}:

Total possible:

Use a question count for equal-weight tests or the point maximum for partial credit.

points

Grade scale:

Verify that the selected convention matches the class or institution policy.

Custom cutoffs:

Example: A,90 on the first line, then B,80. A bottom band is added automatically when needed.

Curve or extra credit:

Positive values add points; negative values apply a penalty. The adjusted result remains between zero and the test maximum.

points

Display decimals:

Choose 0–3 decimal places for on-screen percentages.

{{ row.label }} {{ row.display }}

Calculation method:

The same canonical values feed the summary, requirements table, chart, and exports.

{{ row.label }} {{ row.value }}

Grade	Minimum	Earned needed	Max missed	Status	Copy
{{ row.grade }}	{{ formatPercent(row.minimum_percent) }}	{{ formatPoints(row.earned_needed) }} / {{ formatPoints(computation.normalizedInputs.total_possible) }}	{{ formatPoints(row.max_missed) }}	{{ row.status }}

The chart renderer is unavailable. The same cutoff values remain available in Grade requirements.

A score percentage puts earned work and total possible work on the same 100-point scale. That makes results from a 20-question quiz and a 75-point exam comparable, even though the raw totals are different. For equal-value questions, correct and missed counts are enough. Tests with partial credit need earned points and the full point maximum instead.

The percentage and the grade label answer different questions. The percentage is arithmetic. A letter grade or pass/fail result comes from a set of cutoffs chosen by a school, instructor, certification body, or other policy owner. An 84% result can be a B on one scale and a different label on another, so the scale must be checked before the label is treated as official.

Ways to describe a test result
Starting information	Best interpretation	Common mistake
Correct answers	Use when every question has equal value.	Ignoring partial credit or weighted questions.
Missed answers	Subtract misses from the total before finding the percentage.	Dividing missed answers by the total and calling that the score.
Earned points	Use for rubrics, partial credit, and mixed point values.	Using question count as the denominator instead of possible points.

A curve or extra-credit adjustment changes earned points before the final percentage is calculated. It can raise or lower the result, but it should represent an actual grading rule rather than an informal attempt to reach a preferred band. Display rounding can make the percentage look as though it sits exactly on a cutoff; the unrounded value and the stated grading policy remain the safer basis for a consequential decision.

A score summarizes performance on the entered work only. It does not measure question quality, content mastery beyond the test, grading consistency, or how an institution handles retakes, dropped questions, category weights, and instructor overrides.

How to Use This Tool:

Match the entry method and grade scale to the actual assessment before reading the label.

Choose Correct answers, Missed answers, or Earned points. Use earned points when questions do not all carry the same value.
Enter the score value and Total possible. The score value cannot exceed the total.
Select the grading convention. For Custom cutoffs, enter one Label,Minimum row per line, such as A,90.
Add curve or extra-credit points only when the grading policy calls for them, then choose 0 to 3 display decimals.
Review the percentage, grade band, and points needed for the next band. Compare the chosen cutoffs with the official policy before recording the grade.

Interpreting Results:

Raw score shows earned points before a curve or penalty. The main percentage uses adjusted earned points. When the adjustment would go below zero or above the test maximum, the result stops at 0 or 100%, and the curve warning indicates that a limit was reached.

Grade is the highest listed band whose minimum is less than or equal to the adjusted percentage.
Next band reports the smallest additional point amount that reaches the next cutoff. Whole-question tests require a whole point; fractional point totals are rounded upward to the next hundredth.
Grade requirements shows the minimum earned points and maximum missed points for every band under the selected scale.
A displayed percentage rounded onto a cutoff does not change the underlying band decision. Increase the display decimals or compare the exact earned-point requirement when the result is close.

Technical Details:

Percentage scoring converts the chosen entry path into earned points, applies the curve or penalty, and then compares the adjusted percentage with an ordered cutoff list. The arithmetic is deterministic; the built-in grade labels are classroom conventions rather than universal academic standards.

Formula Core:

Let T be total possible points, x the entered score value, c the curve or extra-credit points, and E the raw earned points. Missed-answer mode first subtracts x from T; correct-answer and earned-points modes use x directly.

\begin{array}{lcl} E & = & {\begin{matrix} x & correct or earned mode \\ T - x & missed mode \end{matrix} \\ A & = & \min (T, \max (0, E + c)) \\ P & = & \frac{A}{T} \times 100 \end{array}

Here A is adjusted earned points and P is the adjusted percentage. Percentages keep full precision for grade lookup; the 0 to 3 decimal setting affects presentation only. With 8 missed out of 50 and no curve, E is 42 and P is 84%. On the standard 10-point scale that is B, and an A requires 45 earned points, so the next-band gap is 3 points.

Rule Core:

Built-in test score grade bands
Scale	Inclusive minimums
Standard 10-point	A 90%, B 80%, C 70%, D 60%, F 0%
US plus/minus	A+ 97%, A 93%, A− 90%, B+ 87%, B 83%, B− 80%, C+ 77%, C 73%, C− 70%, D+ 67%, D 63%, D− 60%, F 0%
Strict 7-point	A 93%, B 85%, C 77%, D 70%, F 0%
Pass/fail	Pass 70%, Not yet 0%

Custom rows accept one label and one minimum from 0% through 100%. Labels are limited to 24 characters, duplicate labels and duplicate minimums are rejected, and rows are sorted from highest to lowest. If the lowest supplied minimum is above 0%, a final “Below” band is added at 0%.

For a whole-number total, a band requirement is the ceiling of T multiplied by the cutoff fraction. For a fractional point total, the requirement is rounded upward to the next 0.01 point. This upward rule prevents a displayed requirement from falling short of the cutoff.