Education
125 education tools: grades and averages, GPA, the score needed on a final exam, and class exercises. Built for students and teachers who want the number and the reasoning behind it, free in your browser.
Percentile band classifier
A student at the 72nd percentile is in the average band, which runs from the 25th to the 75th. Enter any percentile from 0 to 100 and get one of five fixed…
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Plus and minus GPA converter
An A minus is worth 3.7 and a B plus 3.3, not the 4.0 and 3.0 of the plain letters. Paste one grade or a whole list and see each grade's points from a fixed…
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Points Lost to Target Grade Calculator
In a 500-point course with a 90 percent goal you can lose 50 points in total, so with 35 already gone, 15 remain.
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Points needed for letter grade
With 650 of 1,000 points, an A needs 900, so you are 250 points short. Enter your points, the course total and the letter you want to see the gap and whether it…
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Pomodoro Finish Time Estimator
Starting at 09:00, eight Pomodoros end at 13:05: 200 minutes of focus plus 45 minutes of breaks, with no break tacked on after the last session.
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Prime Factorization for School
360 becomes 2³ × 3² × 5, and you see each rung of the division ladder: 360, 180, 90, 45, 15, 5 and finally 1.
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Q&A questions in time calculator
Twenty minutes of Q&A at 3 minutes per exchange fits 6 complete questions, uses 18 minutes and leaves 2 spare.
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Range of grades calculator
With five grades whose highest is 91 and lowest is 68, the range is 23: the highest minus the lowest.
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Text grade level from length
Three short sentences with 16 words and 17 syllables score below first grade, at an early elementary level.
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Reading speed needed for a deadline
With 40 pages of 250 words each and 100 spare minutes, you need to read 100 words per minute to finish on time.
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Round to decimal places
Round 3.14159 to two decimal places and you get 3.14; to four, 3.1416. Choose from zero to fifteen places and see the number before and after, rounded half away…
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Rubric Weighted Score Calculator
Research at level 4 with a weight of 0.40, reasoning at 3 with 0.35 and writing at 5 with 0.25 add up to 3.9 on the same level scale.
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SAT total score combiner
A Reading and Writing score of 640 plus a Math score of 700 gives an SAT total of 1340. Enter both section scores, each from 200 to 800 in steps of ten, and an…
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Scale grade to new maximum
42 out of 50 becomes 84 out of 100, or 8.4 out of 10: the same 84% stretched onto the new maximum.
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Scale raw test score calculator
A raw score of 42 on a range from 10 to 50 becomes 80 on a 0 to 100 scale, because it sits 80% of the way along.
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Scientific notation for school
45,000 becomes 4.5 × 10^4 and 0.0032 becomes 3.2 × 10^-3, with steps that show the coefficient, the exponent and which way the decimal point moved.
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Script reading time by WPM
A 900-word script takes 6 minutes to deliver aloud at 150 words per minute, but only 3:47 to read silently at 238.
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How Many Slides Do You Need for a Presentation?
A 30-minute talk at 2 minutes per slide needs 15 slides. Enter the speaking time and your average pace per slide; the count is rounded to whole slides and you…
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Words per slide budget
A 1,200-word script on 12 slides puts 100 words on each one, 60 over the usual 40-word ceiling. Enter the words and the slide count to see the density and how…
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Speech length vs time limit checker
A 26-word opening read at 130 words per minute takes 12 seconds, leaving 48 seconds of a one-minute limit.
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Speech time from syllables
600 syllables at 4 syllables per second take 150 seconds, or 2 minutes 30 seconds, to say aloud. Enter the syllable total from your script and a realistic…
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Stanine from percentile calculator
A percentile rank of 72 is stanine 6, the band covering percentiles 60 to 76, read as average. Enter any rank from 1 to 99, decimals included, and get the…
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Study hours per credit calculator
Fifteen credits at two study hours per credit mean 30 hours of study a week outside class; at three hours per credit, 45.
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Thesis length estimator
Plan a thesis chapter by chapter: six chapters totalling 29,500 words, double-spaced, come to 121 pages, or 148 with 9 front matter and 18 reference pages.
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Exam time per question calculator
A 90-minute exam with 60 questions gives 90 seconds per question, or 1.5 minutes each, and a pace of 40 questions per hour.
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Unique words count calculator
In “The quick brown fox jumps over the lazy dog. The fox is quick!” 9 of the 13 words are distinct and 4 are repeats.
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Vocabulary words to goal
If you know 2,500 words and aim for 5,000, you still have 2,500 to learn and you are 50 % of the way there.
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Weighted course grade calculator
Homework 92 at 20%, quizzes 85 at 15%, midterm 78 at 25% and final 88 at 40% give a course grade of 85.85%.
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Weighted GPA with honors calculator
An AP A counts as 5.0 and an honors B+ as 3.8: with two regular courses at A- and B, the weighted GPA is 3.88 against 3.5 unweighted.
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Weighted grade average by category calculator
Homework 88 at weight 20, projects 94 at 35 and exams 81 at 45 average to 86.95. The weights can total 100, 1 or any positive number, and the breakdown shows…
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Weighted score out of total
Homework 85/100, a midterm 16/20 and a final 42/50, weighted 30, 30 and 40, give a mark of 16.62 out of 20.
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What Percent Is X of Y? Percentage Calculator
18 out of 24 is 75%, and 30 compared with 24 is 125%: enter the part and the whole to see what percentage one is of the other, along with the decimal ratio and…
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Average words per sentence
Two sentences with 11 words in total average 5.5 words per sentence, a very simple pace. Paste any text to get its word count, sentence count and mean sentence…
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Words to pages estimator
2,500 words in 12-point text, double-spaced with one-inch margins on Letter paper, come to just over 9 pages, so 10 sheets: 270 words fit on each page.
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Words to paragraphs estimator
1,500 words at 100 words per paragraph make 15 paragraphs with nothing left over. Enter your target word count and a typical paragraph length to get the exact…
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Bell curve grade calculator
A score of 88 in a class with a mean of 75 and a standard deviation of 8 sits 1.625 deviations above average, which is an A on this curve.
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Final exam grade needed calculator
Find the score you need on the final to finish with the course grade you want: with an 85 now, a 90 target and a final worth 20%, you would need 110, so the…
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Exam T-score calculator
Turn a standardized exam z-score into the T-score printed on score reports: a z of 1.5 becomes a T of 65, and a T of 50 is always the cohort average.
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Overall grade from categories
Homework at 92, quizzes at 88, a midterm at 79 and a final at 85, weighted 20, 15, 25 and 40, give an overall of 85.35%, a B.
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Unweighted GPA calculator
A, B+, B and A- average to a 3.5 unweighted GPA: the letters become 4.0, 3.3, 3.0 and 3.7 on the plain four-point scale and every course counts once, with no…
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Memory retention after days
After 7 days at a forgetting rate of 0.1 per day, about 49.66% of a fully learned lesson is still remembered.
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Normalized test score calculator
40 out of 50 and 64 out of 80 both come out as 80 on a 0 to 100 scale. Enter a raw mark with its test's minimum and maximum, and exams with different totals can…
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Class percentile rank of a score
A score of 85 in a class of 10 where 5 scored lower, 2 tied and 3 scored higher ranks at the 50th percentile.
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Weekly study hours per course
With 20 study hours a week, a four-credit Calculus II at difficulty 1.5 gets 10 hours and two three-credit courses get 5 each: hours follow credits times…
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APA format pages estimator
A 2500-word literature review fills 10 double-spaced APA pages at the usual 250 words per page. Enter the body word count, add the title page and abstract if…
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Dissertation chapter word split
Turn one thesis word limit into four chapter targets: 80,000 words at 15, 20, 35 and 30 percent become 12,000, 16,000, 28,000 and 24,000 words for introduction…
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Pause-adjusted speech duration
A 300-word talk at 150 words per minute is 120 seconds of speech, but 15 sentences with half-second pauses add 7.5 seconds, for 2 minutes 7.5 seconds on the…
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Words needed for a speech
A five-minute speech at 130 words per minute needs 650 words. Set the length, your speaking pace and an optional share for pauses and applause, and you get the…
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Test score confidence band
A score of 80 with a standard error of 4 is a range: 80 plus or minus 1.96 × 4 points at 95% confidence.
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Weighted final two-part grade
Coursework 72 at 40% and an exam 64 at 60% combine into a module mark of 67.2: each mark is multiplied by its weight and divided by the total weight.
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Language daily minutes for a goal
Fifty hours of language practice in 30 days with one rest day a week leaves 26 practice days and 3,000 minutes to fill: 116 minutes a day, rounded up, or 58 per…
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Long division with remainder
784 divided by 12 is 65 with 4 left over. The tool writes the check, 784 = 12 × 65 + 4, and lists every column step, bring down, multiply and subtract, the way…
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CEFR level by study hours
750 guided study hours are enough for C1 on the CEFR scale. Enter your hours, and the level you already hold if you have one, to see the highest band reached…
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Greatest common factor calculator
Get the greatest common factor of two or more whole numbers along with every factor they share: 12, 18 and 24 share 1, 2, 3 and 6, so their GCF is 6.
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AP Chemistry Score Calculator
45 correct multiple-choice answers and 34 points on the written questions make a composite of 74.46, an estimated AP Chemistry 5.
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AP Lang Score Calculator
34 multiple-choice answers right plus essays scored 5, 4 and 5 give a composite of 76.78, a predicted AP Lang 5.
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AP Biology score calculator
48 multiple-choice answers right and 24 points on the written questions give a composite of 73.33 and a predicted AP Biology 4.
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AP World History score calculator
42 multiple-choice answers, 7 short-answer points, a 5 on the DBQ and a 4 on the long essay give a composite just under 74, so the predicted AP World score is a…
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Classroom spacing calculator
Find out how many students fit in a room at the spacing you need: a 10 by 8 floor with each learner claiming a 2 by 2 square seats 20, in 5 rows of 4 seats.
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College GPA calculator
Get your credit-weighted college GPA on the 4.0 scale from course grades and credit hours: four courses adding up to 38.8 quality points over 11 credits give a…
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