About
About (Português) – 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.
Sobre Nós – Calculadora de Notas
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.
Escala Padrão de Avaliação Acadêmica
Tabela de conversão entre porcentagens, letras e pontos GPA 4.0.
Escala Padrão de Avaliação Acadêmica
Escala de Avaliação| Nota em Letra | Faixa de Porcentagem | Média de Pontos (GPA) | Desempenho Acadêmico |
|---|---|---|---|
| A+ | 97% – 100% | 4.0 | Nível de Honra |
| A | 93% – 96% | 4.0 | Nível de Honra |
| A- | 90% – 92% | 3.7 | Nível de Honra |
| B+ | 87% – 89% | 3.3 | Aprovado com Louvor |
| B | 83% – 86% | 3.0 | Aprovado com Louvor |
| B- | 80% – 82% | 2.7 | Aprovado com Louvor |
| C+ | 77% – 79% | 2.3 | Aprovado com Louvor |
| C | 73% – 76% | 2.0 | Aprovado com Louvor |
| C- | 70% – 72% | 1.7 | Aprovado com Louvor |
| D+ | 67% – 69% | 1.3 | Necessita de Melhoria |
| D | 63% – 66% | 1.0 | Necessita de Melhoria |
| D- | 60% – 62% | 0.7 | Necessita de Melhoria |
| F | < 60% | 0.0 | Necessita de Melhoria |
Calculadoras Populares
Ferramentas especializadas para planejar seu semestre e monitorar o GPA.
Calculadora de Notas
Calculate overall percentages, total points earned, and letter grades across all your coursework.
Calculadora de Exame Final
Find out the exact score needed on your final exam to pass the class or earn your desired letter grade.
Calculadora de Média Ponderada
Compute course grade when assignments, quizzes, midterms, and finals carry distinct category percentages.
Calculadora de GPA 4.0
Calculate high school and college grade point averages with credit hour weighting.
Calculadora de Média de Notas
Calculate the mathematical mean, median, highest, and lowest score across any set of grades.
Corretor de Provas e Testes
Instant grading chart and test score checker for students and teachers.