About
About (Polski) – The fastest, most accurate online grade calculator suite. Calculate course averages, final exam score requirements, weighted categories, and GPA on a 4.0 scale with 100% privacy.
O Nas – Kalkulator Ocen
At Grade Calculator (gradecalculator.dev), we empower students, educators, and parents worldwide with fast, transparent, and mathematically rigorous academic calculation tools. Calculating semester averages, final exam score targets, and cumulative GPA should never require confusing spreadsheets or ad-cluttered websites that lag on mobile devices.
Our suite of 15+ calculators is built on modern web standards to ensure instant client-side execution, 100% browser-based data privacy, and zero server storage of personal grades.
Mathematical Rigor
Every calculation formula—from weighted harmonic contributions to decimal quality points—is verified and tested against standard institutional benchmarks.
Privacy-First Architecture
We never store, transmit, or monetize your coursework grades. All calculations execute directly in your browser's JavaScript runtime.
Always Free & Accessible
No paywalls, no forced logins, and no intrusive popups. Built to conform to modern WCAG accessibility guidelines.
Academic Community & Updates
Follow Grade Calculator across our official community channels for study tips, grading insights, and calculator releases.
Standardowa Skala Ocen
Tabela przeliczania procentów, stopni i punktów 4.0 GPA.
Standardowa Skala Ocen
Skala Oceniania| Ocena Słowna / Stopień | Zakres Procentowy | Średnia Ocen (GPA) | Status Akademicki |
|---|---|---|---|
| A+ | 97% – 100% | 4.0 | Z Wyróżnieniem |
| A | 93% – 96% | 4.0 | Z Wyróżnieniem |
| A- | 90% – 92% | 3.7 | Z Wyróżnieniem |
| B+ | 87% – 89% | 3.3 | Zaliczone |
| B | 83% – 86% | 3.0 | Zaliczone |
| B- | 80% – 82% | 2.7 | Zaliczone |
| C+ | 77% – 79% | 2.3 | Zaliczone |
| C | 73% – 76% | 2.0 | Zaliczone |
| C- | 70% – 72% | 1.7 | Zaliczone |
| D+ | 67% – 69% | 1.3 | Wymaga Poprawy |
| D | 63% – 66% | 1.0 | Wymaga Poprawy |
| D- | 60% – 62% | 0.7 | Wymaga Poprawy |
| F | < 60% | 0.0 | Wymaga Poprawy |
Popularne Kalkulatory
Specjalistyczne narzędzia do planowania semestru i śledzenia ocen.
Kalkulator Ocen
Calculate overall percentages, total points earned, and letter grades across all your coursework.
Final Grade Calculator
Find out the exact score needed on your final exam to pass the class or earn your desired letter grade.
Weighted Grade Calculator
Compute course grade when assignments, quizzes, midterms, and finals carry distinct category percentages.
Standard 4.0 GPA Calculator
Calculate high school and college grade point averages with credit hour weighting.
Average Grade Calculator
Calculate the mathematical mean, median, highest, and lowest score across any set of grades.
Test Grade Calculator
Instant grading chart and test score checker for students and teachers.