Education calculators

GPA, grades, and reading level tools — everything runs locally in your browser.

Scientific Calculator Online

Full-featured scientific calculator with trigonometry, logarithms, exponents, and expression history.

Graph Calculator — Plot Functions

Plot mathematical functions on an interactive graph. Supports multiple equations, zoom, pan, and real-time updates.

Algebra Calculator — Solve & Simplify

Simplify expressions, factor polynomials, solve equations, and compute derivatives. Renders math with LaTeX.

Percentage Calculator Online

Calculate percentages, increases, decreases, proportions, and find original values before percentage changes. 9 calculation types.

GPA Calculator — 4.0 Scale

Calculate GPA from letter grades and credit hours on a 4.0 scale. Add courses and see weighted GPA instantly.

Grade Calculator — Weighted Average

Calculate weighted course grade from assignment scores and weights. See your overall percentage instantly.

Final Grade Calculator — Score Needed

Calculate the final exam score you need to reach your target course grade. Enter current grade and final weight.

Reading Level Calculator — Flesch-Kincaid

Estimate reading grade level with Flesch-Kincaid. Paste text to see grade level, reading ease, and word count.

Citation Generator — APA & MLA

Fill in author, title, publisher and date and get a formatted reference in APA or MLA, punctuation and italics already in the right places.

Flashcard Formatter — Q&A to Markdown

Turn a list of questions and answers into Markdown that Anki, Obsidian or Notion will read as cards rather than as one undifferentiated block.

APA to MLA Citation Converter

Paste a reference formatted in APA and get the MLA version back, with author order, title case and the date position all moved to where MLA puts them.

Roman Numeral Converter

Convert numbers to Roman numerals and back, following the subtractive rules so 4 comes out as IV and 1994 as MCMXCIV rather than as a row of ones.

Excel Formula Translator

Translate Excel function names between English, Portuguese, and Spanish. Search 375 functions — VLOOKUP is PROCV in pt-BR, BUSCARV in Spanish.

HP 15C Calculator Online

Use the HP 15C scientific calculator online: RPN keys, complex numbers, matrices, SOLVE, numeric integration and programs, with a live stack.

About these education calculators

Students and teachers need quick answers — weighted GPA, course grades, what score you need on the final, or the reading level of a passage. These calculators run instantly in your browser.

What you can calculate

Use the GPA calculator on a 4.0 scale, the grade calculator for weighted assignments, the final grade calculator to plan exam prep, and the reading level calculator for Flesch-Kincaid estimates.

Privacy

Grades and text never leave your device.