Scores, Grades, and GPA Calculations in One Focused Workspace.
EduCalcDb is a free set of educational calculators for students: predict your AP exam score, work out a weighted or curved grade, and calculate your college GPA on your school’s official scale — all in your browser, with no sign-up.
Browse Educational Calculators by Category
Every educational calculator on EduCalcDb belongs to one of three tool hubs, and every hub has its own guide, comparison table and FAQ. Pick the question you are trying to answer: “What will I get on the AP exam?”, “What is my grade, and what do I need on the final?” or “What is my GPA on my university’s scale?” The blog collects longer explainers on how AP exams are curved and scored.
Estimate weighted AP exam composites from section scores.
Grade / Curve CalculatorsCalculate curved scores, weighted grades, and class curve estimates.
GPA CalculatorsCalculate GPA from courses, credits, and letter-grade scales.
BlogData-driven explainers on AP score curves, score distributions and the easiest and hardest AP exams.
Most-Used Student Calculators
These are the student calculators people open most often. Each one runs instantly as you type, explains the exact formula it uses, and links to the official source behind its grading scale or score weights, so you can check the numbers yourself.
Calculate a weighted class grade from scores and category weights.
Grade Curve CalculatorAdd curve points to a raw score and see the curved percentage and letter grade.
VT GPA CalculatorCalculate GPA from course credits and grades.
HCPSS Grade CalculatorCalculate a weighted course grade with editable categories.
APUSH Score CalculatorCombine APUSH MCQ, SAQ, DBQ, and LEQ points into a weighted composite.
AP Calc AB Score CalculatorEstimate an AP Calculus AB composite from multiple-choice and free-response points.
How Our Calculators Work
Every tool follows the same simple pattern, so once you have used one EduCalcDb calculator you know how to use all of them.
- Pick your calculator. Choose the exam, school district or university that matches your class. Scales differ more than most students expect: an A− is worth 3.7 at Virginia Tech, 3.667 at Northeastern and 3.75 at Pitt.
- Enter what you know. Type raw points, category scores and weights, or letter grades and credit hours. Leave anything you have not finished yet at a realistic estimate.
- Read the result live. The composite, letter grade or GPA updates on every keystroke. Nothing is sent to a server, so your grades never leave your device.
- Plan the next step. Use the what-if inputs, the final exam panel or the cutoff table to see exactly how many points you need for the score you want.
Each calculator page then continues with a full guide: the official scale or exam format, a worked example, the common mistakes students make, and a short FAQ. That makes every tool useful even before you type a single number.
AP Score Calculators for Every Major Exam
Our AP score calculators cover 23 exams, from AP Calculus AB and BC to APUSH, AP Chemistry, AP Lang and AP Physics 2. Each one rebuilds the real exam: the number of multiple-choice questions, every free-response question with its point value, and the weight College Board gives each section.
Your raw points are scaled into a composite out of 100, and the composite is mapped to a predicted 1–5 score using estimated cutoffs. College Board does not publish exact cutoffs and re-equates every exam each year, so we label the cutoffs as estimates and let you edit them. A result close to a boundary could land either side, which is why each calculator also shows how many composite points you need to reach the next score.
What counts as a good AP score depends on where you send it. College Board calls a 3 “qualified”, a 4 “very well qualified” and a 5 “extremely well qualified”. Many colleges award credit or placement for a 3 or higher, while selective programs often ask for a 4 or 5 — so check each college’s AP credit policy before you set a target.
Studying for several exams? Compare them in AP score curves compared and check how students actually scored in the AP score distributions guide.
Weighted Grade, Final Exam and Curve Calculators
Grade calculators answer the everyday questions of a semester. The Broward, HCPSS and ASU calculators combine category scores and weights into one percentage, then show the letter on that school’s own scale — Broward has a B+ from 87 to 89, HCPSS uses an E instead of an F, and ASU has no C−, D+ or D−.
Each one also includes a final exam planner: enter how much the final is worth and the grade you want, and it shows the exact score you need, or tells you honestly when a target is out of reach.
When a teacher curves a test, the grade curve calculator compares five common methods side by side, including the square root curve (10 × √score), and the bell curve calculator turns your score, the class mean and the standard deviation into a z-score, a percentile and a curved letter grade.
GPA Calculators on Official University Scales
A generic 4.0 GPA calculator can be off by a few hundredths because universities assign different points to plus and minus grades. Our GPA calculators use each school’s published values, then multiply by credit hours and divide by total credits, exactly as the registrar does.
Use them for a single semester GPA by entering this term’s courses, or for a cumulative GPA by adding every graded course you have taken. Pass/fail, withdrawn and incomplete courses usually carry no grade points, so leave them out. Applying to law school? The LSAC and OLSAS calculators recalculate your transcript on the scales admissions offices actually use, which can differ from the GPA printed on your transcript.
| Calculator | A− | B+ | Notes |
|---|---|---|---|
| Virginia Tech | 3.7 | 3.3 | No A+; Dean’s List at 3.4 |
| Northeastern | 3.667 | 3.333 | Three-decimal grade points |
| Pitt | 3.75 | 3.25 | A+ counts as 4.00 (QPA) |
| Kansas (KU) | 3.7 | 3.3 | No A+ |
| LSAC (CAS) | 3.67 | 3.33 | A+ is 4.33 for law school |
| OLSAS (Ontario) | 3.7 | 3.3 | 85–89% (A) is 3.9 |
Who Uses EduCalcDb
Check where an AP practice test would land, see what you need on a final exam, or confirm your GPA before a scholarship or Dean’s List deadline. Because every input is editable, you can test the best and worst case in a few seconds.
District and university scales are rarely explained on the report card itself. Each calculator page lays out the full scale, how categories are weighted and how honors or AP courses change a GPA, in plain language you can read in a few minutes.
Use the grade curve and bell curve calculators to compare curving methods before applying one, or walk a student through how a composite score is built from raw AP section points.
Grading Terms Explained
The same handful of terms appears across AP, grade and GPA calculators. Here is what each one means on EduCalcDb.
The weighted total of your AP section scores, scaled to 100. It is the number that gets converted to a 1–5 AP score.
The lowest composite that earns a given AP score. Cutoffs move slightly each year, so calculators use estimates you can edit.
Your course percentage when categories such as homework, quizzes and tests count for different shares of the final grade.
Credit hours multiplied by the grade points for a letter. Total quality points divided by total credits gives your GPA (Pitt calls it QPA).
Any adjustment a teacher applies to raw test scores, such as adding flat points, scaling to the top score or using a square root curve.
How many standard deviations a score sits above or below the class mean. Bell-curve grading turns the z-score into a percentile and a letter.
Latest From the Blog
The blog goes deeper than a calculator can: how AP exams are curved, which exams are hardest to pass, and what the official score distributions really say. Every article is written and fact-checked by the EduCalcDb Editorial Team.
AP Score Curves Compared: The AP Curve Chart for 23 Exams
An AP curve chart of the estimated composite needed for a 3, 4 and 5 on 23 AP exams — from Calculus BC at 57% for…
AP Score Distributions 2026: What Percentage Gets Each Score
The official 2026 AP score distributions for all 40 exams, sorted by the percentage earning a 5, with full 1–5 breakdowns, pass rates, a Calculus AB…
The Easiest and Hardest AP Exams, Ranked Two Different Ways
The 23 AP exams we cover, ranked by how forgiving the curve is and by how many students passed in 2026 — plus an honest look…
Why Students Trust EduCalcDb
Section weights come from College Board course descriptions, and grading scales from district policies and university registrars. Every calculator page links to the source it uses.
Where an official number does not exist — like next year’s AP cutoffs — we say so, explain how the estimate was made and let you edit it, instead of presenting a guess as fact.
Every calculation runs in your browser. There are no accounts, no forms to fill in and no grade data stored on our servers, so you can try as many what-if scenarios as you like.
Spotted a scale that changed or a number that looks wrong? Tell the Editorial Team and we will check it against the source and update the calculator.
Frequently Asked Questions
What is EduCalcDb?
EduCalcDb is a free collection of educational calculators for students: AP exam score predictors, weighted grade and final exam calculators, grade curve tools and college GPA calculators. Each tool has its own page with a guide that explains the math behind it.
Are the calculators really free?
Yes. Every calculator is free to use, with no account, no sign-up and no limit on how many times you run it. The math runs in your browser, so the tools also work on a slow school connection once the page has loaded.
How accurate are the AP score calculators?
They use each exam’s published section weights and estimated composite cutoffs, so a prediction is usually within one point of the real score. College Board adjusts cutoffs every year, so treat any predicted 1–5 score as an estimate, not a guarantee.
Do the grade and GPA calculators use my school’s official scale?
Yes. School-specific tools such as the Broward, HCPSS, Pitt and Northeastern calculators use that school’s own letter-grade cutoffs and grade points, which can differ from a generic 4.0 scale by a few hundredths of a point.
Can I work out what I need on my final exam?
Yes. The Broward, HCPSS and ASU grade calculators include a final exam panel. Enter the final’s weight and the overall grade you want, and it shows the exact percentage you need, or tells you when the target is out of reach.
What is a square root curve?
A square root curve takes the square root of your percentage and multiplies it by 10, so a 64 becomes an 80 and an 81 becomes a 90. It raises low scores the most and never pushes anyone above 100. The grade curve calculator shows it beside four other methods.
Is my grade data saved anywhere?
No. The calculators run entirely in your browser and do not send or store the numbers you type. The only thing the site remembers is whether you chose the light or dark theme.
Which calculator should I use for law school applications?
Use the LSAC GPA calculator for U.S. law schools, which see your GPA on the CAS 4.33 scale, and the OLSAS GPA calculator for Ontario law schools, which convert grades to the OUAC 4.0 scale.
Find the Right Calculator in Seconds
Search 34 free educational calculators by exam, school or topic, or start with the full list.