テスト点数計算機

Quickly grade a test: enter the number of questions and how many were answered incorrectly to get the percentage score, letter grade and a full score chart. Handy for teachers.

得点

85%

評定（文字）: B
正解数: 34
1問あたりの点数: 2.5

得点表

不正解	正解	得点	評定（文字）
0	40	100%	A+
1	39	97.5%	A+
2	38	95%	A
3	37	92.5%	A-
4	36	90%	A-
5	35	87.5%	B+
6	34	85%	B
7	33	82.5%	B-
8	32	80%	B-
9	31	77.5%	C+
10	30	75%	C
11	29	72.5%	C-
12	28	70%	C-
13	27	67.5%	D+
14	26	65%	D

以下のガイドはまだ日本語に翻訳されていないため、英語で表示しています。計算機自体はすべて日本語に対応しています。

この計算機の使い方

Enter the total number of questions (assuming each is worth the same).
Enter the number wrong.
Use the chart to grade a whole class quickly.

計算式

With equally weighted questions, the score is the share answered correctly.

Score % = (total − wrong) / total × 100

Each question is worth 100 / total percentage points

Example

40 questions, 6 wrong → 34 correct.
34 / 40 = 85%, a B on the common US scale.
Each question is worth 2.5 points.

よくある質問

What if questions have different point values?

Use the percentage grade calculator with points earned and points possible instead.

How is the letter grade assigned?

With the common US scale (A 93+, A− 90+, B+ 87+, …, F below 60). Your school's scale may differ.

Can I print the score chart?

Yes. Use Print in the results, or download the chart as a CSV file.

テスト点数計算機

得点表

この計算機の使い方

計算式

Example

よくある質問

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