Education

Test Grade Calculator

Turn a score out of any total into a percentage and letter grade. See points per question, how many you can miss, and the full grading scale.

Book Writing Timeline Calculator

Calculate how long it will take to write a book from daily word count goal and target length. Includes realistic buffer for revision and rest days.

Grade Curve Calculator

Apply a curve to a class of test scores: flat boost, square-root, or top-score-to-100. Compares raw scores and curved scores side by side.

Forgetting Curve Study Planner

Use the Ebbinghaus Forgetting Curve to schedule review sessions. Enter days since first studying to see current retention and the best times to review.

Semester Course Load Planner

Calculate weekly study hours needed from credit hours, course difficulty, and semester length. Build a realistic weekly study schedule for any semester.

Geological Time Scale Calculator

Look up any geological era, period, or epoch from millions of years ago. Find out what was happening on Earth at any point in its 4.5-billion-year history.

Mayan Numeral Converter

Convert between decimal numbers and the ancient Mayan vigesimal (base-20) numeral system. See the dot-and-bar representation used by the Maya civilization.

Syllable Counter

Count syllables in any word or sentence instantly. Useful for writing haiku, checking poetic meter, analyzing reading level, and song lyrics phrasing.

Word and Letter Frequency Calculator

Analyze the frequency of every word and letter in your text. Useful for writing analysis, cryptography, linguistics, and SEO keyword density.

Book Reading Time Calculator

Calculate reading time from page count, words per page, and reading speed in WPM. Returns total time for slow (150), average (250), and fast (400 WPM) readers.

Degree Completion Timeline Calculator

Calculate how long it will take to finish your college degree based on credits earned, credits remaining, and your course load each semester.

Assignment Deadline Countdown Calculator

Calculate days, hours, and work sessions remaining until an assignment deadline — and whether you have enough time to complete it.

Credit Hours to Units Converter

Convert between credit hours, semester units, quarter units, and contact hours — plus calculate full-time vs part-time student status.

Exam Score Needed to Pass Calculator

Work out the score you need on your remaining assessments to pass, from your current average, the weight already completed, and the pass mark.

Citation Count Estimator

Estimate citation counts and academic impact scores. Calculate h-index potential, citations per year, and research impact benchmarks.

Essay Word Count Planner

Plan your essay structure by word count. Allocate words to introduction, body paragraphs, and conclusion based on total length and number of arguments.

Financial Aid Estimate Calculator

Estimate your expected financial aid eligibility based on household income, assets, and family size. Useful for US college planning.

Flashcard Spaced Repetition Calculator

Calculate your optimal flashcard review schedule using spaced repetition. Get review intervals for new, learning, and mature cards based on the SM-2 algorithm.

Reading Assignment Time Planner

Calculate how long it will take to complete a reading assignment based on your reading speed, text difficulty, and available time per session.

Single Grade GPA Impact Calculator

Calculate how a single grade changes your cumulative GPA from current GPA, credits earned, and new course hours. Returns new GPA for each letter grade A-F.

Weighted Grade Calculator

Calculate your weighted grade average across up to 6 assignments or exams. Set a custom weight for each entry and see your final course grade and letter.

Study Session Planner

Plan effective study sessions using the Pomodoro technique. Enter total available time and subject count to get a balanced, optimized study block schedule.

Essay Length Calculator

Estimate essay page count from word count, font size, and line spacing. Covers 10pt to 14pt at single, 1.5 and double spacing, with reading time.

Flashcard Study Plan Calculator

Calculate how many flashcards to study daily using spaced repetition. Plan your study schedule for exams and language learning.

GPA Needed to Graduate Calculator

Calculate GPA needed in remaining credits to hit a target cumulative GPA. Returns required semester average for graduation honors or probation recovery.

Scholarship Tax Calculator

Determine if your scholarship is taxable under IRS rules. Calculate the taxable portion from award amount minus tuition, fees, and required course materials.

Study Hours Calculator

Calculate study hours needed before an exam from chapters, difficulty, and days until the test. Returns a daily study schedule with hours per session.

Word Count Calculator

Count words, characters, sentences, and paragraphs in any text. Estimates reading time at 250 wpm and speaking time at 130 wpm for essays and presentations.

Student Loan Payoff Calculator

Calculate student loan payoff timeline and total interest from balance, interest rate, and term. Compare standard and accelerated payment strategies.

AP Credit Savings Calculator

Calculate tuition savings from AP exam credit. Passing a single AP exam at score 3-5 can earn 3-6 college credits and save $1,500-$3,000 at most universities.

School Calendar Calculator: How Many School Days Left?

Count how many school days are left until summer break or finals. Works between any two dates and skips weekends plus the holiday breaks you enter.

ACT to SAT Score Converter

Convert ACT to SAT and SAT to ACT with the official 2018 ACT and College Board concordance table, covering every ACT composite score from 9 through 36.

CGPA to Percentage Converter

Convert CGPA to percentage and percentage to CGPA using the Indian grading system (CGPA x 9.5). Works for CBSE, university systems.

Citation and Reference List Calculator

Work out how many sources a paper needs, how many pages the reference list runs to in APA, MLA or Chicago, and how long formatting them takes.

Class Average Calculator

Calculate class average, median, standard deviation, and A to F grade distribution from a list of student scores, with the pass rate at any threshold you set.

Class Rank Percentile Calculator

Convert class rank to a percentile from rank and class size. See where you stand in your graduating class for college applications and scholarships.

College Cost Projector

Project 4-year college cost from current tuition, years to enrollment, and annual tuition inflation. Returns projected total and monthly savings needed.

Exam Score Needed Calculator

Calculate the minimum final exam score needed to reach your target grade from current grade and exam weight. Returns the required score and achievability.

Grade Calculator

Calculate your weighted average grade. Enter scores and their weights to get your overall grade with letter grade conversion.

Homework Time Calculator: How Long Will It Take?

See how long your homework will take from the number of assignments, their difficulty, and your days left. Get a daily plan to finish before the deadline.

IELTS Band Score Calculator

Calculate your overall IELTS band score from individual section scores. See how Listening, Reading, Writing, and Speaking combine.

International Grade Converter

Convert academic grades between US, UK, European (ECTS), and Indian grading systems. Useful for study abroad and international applications.

Language Learning Time Calculator

Estimate how long it will take to learn a new language based on difficulty tier, study hours per week, and proficiency target.

Reading Level Calculator

Paste any text to calculate its Flesch-Kincaid grade level and reading ease score. Find out what grade level your writing targets.

Reading Time Calculator

Estimate how long it takes to read a text. Paste your text or enter a word count to get estimated reading and speaking times.

SAT Score Converter

Convert between the old SAT scale (2400 max) and the new SAT scale (1600 max). Useful for comparing scores across different test years.

Scholarship GPA Requirement Calculator

Calculate the GPA needed in remaining credits to hit a scholarship or graduation requirement. Returns required average and minimum grade per course.

Scholarship Value Calculator

See what a scholarship is really worth: net cost per year, total out-of-pocket, loans avoided, and the loan interest you never have to pay on them.

Semester GPA Calculator

Calculate your semester GPA from courses with letter grades and credit hours. Also computes cumulative GPA with prior credits.

Spaced Repetition Calculator

Plan your flashcard study schedule. Enter total cards and daily new cards to see how long it takes and what your review load looks like.

Student Budget Calculator

Plan a monthly student budget from job income, aid and loans against rent, food and other costs. Returns your monthly surplus or shortfall and the annual total.

Student Loan to Income Calculator

Calculate student loan debt-to-income from balance and starting salary. Returns monthly payment and affordability rating under the 10% income guideline.

Study Break Calculator

Plan study sessions with Pomodoro (25/5), 52-17, or 90-minute ultradian methods. Enter total study time to get a full session plan with break durations.

Study Time Planner

Plan your study schedule from exam date and total material to cover. Returns daily study hours and a week-by-week plan based on your available time slots.

Target GPA Calculator

Calculate the grade average needed in remaining credits to hit a target GPA. Enter current GPA, credits earned and remaining, and goal GPA.

Teacher Grading Calculator

Enter student scores and a grading scale to assign letter grades, see class distribution, and optionally apply a curve. Built for teachers.

TOEFL to IELTS Score Converter

Convert between TOEFL iBT and IELTS band scores. See approximate equivalencies for university and immigration applications.

Tuition Comparison Calculator

Compare the total 4-year cost of in-state, out-of-state, and private college tuition including room, board, and annual increases.