How do I use the Study4Class calculator?

Type an expression (e.g., 2*pi or sqrt(16)+1) and press Enter, or use the keypad buttons. Use C to clear and = to evaluate.

How do I use the timer and stopwatch?

Choose Stopwatch or Countdown, then press Start. For countdown, set minutes and seconds first. Use Reset to clear.

How do I use the word counter?

Paste or type text and the tool automatically updates word count, characters, paragraphs, and reading time.

How do I use quick notes?

Type notes in Edit and they auto-save in your browser. Switch to Preview for Markdown formatting. Use Clear to remove saved notes on this device.

How do I use the unit converter?

Pick a category, enter a value, and choose from/to units. The converted result updates automatically.

How do I use formula reference?

Search for a topic or formula name, then click a result to view the formula and notes. Browse by category buttons.

How do I use flashcards?

Add a card with Front and Back text. Use Prev/Next to navigate and Flip to reveal the other side. Shuffle mixes the deck and Remove deletes the current card.

How do I use the Pomodoro timer?

Start a focus session, then take a break when prompted. Reset restarts the cycle. (Timing options may be available in the tool.)

How do I use the GPA calculator?

Add classes with credits and letter grades. The GPA updates as you change entries. Clear or reset to start over.

How do I use the study checklist?

Add tasks, check them off as completed, and your list saves in your browser. Clear removes the saved list on this device.

How do I use the citation helper?

Select MLA or APA (basic), fill in the fields, and copy the generated citation from the output box.

How do I use math practice?

Choose your settings (if shown), answer the questions, and submit to see your score. Reset or generate new questions to practice more.

How do I use the final grade calculator?

Enter current grade, desired grade, and final weight, then press Calculate to see the score you need on the final exam.

How do I use the typing test?

Pick passage length and duration, press Start, then type in the input box. WPM and accuracy update as you type.

How do I use Cornell notes?

Fill in Topic, Cues, Notes, and Summary. Use Preview for a clean view and Print to export. Notes auto-save in your browser.

How do I use the quadratic solver?

Enter a, b, and c for ax²+bx+c=0, then press Solve to see the roots and discriminant.

How do I use the periodic table?

Open the periodic table tool, then click an element to see its details in the side panel.

How do I use Roman numerals converter?

Type a number (1–3999) or a Roman numeral (e.g., XLII), then press Convert (or Enter) to see the conversion.

How do I use the percentage calculator?

Choose a tab: % of, what %, or percent change. Enter the numbers for that tab and press Calculate.

How do I use the fraction helper?

Enter numerator and denominator, then press Simplify & convert to see simplified fraction, decimal, and mixed number.

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Study4Class

Calculators, timers, and study helpers — all in your browser. Pick a tool below to get started.

Tools

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Why use Study4Class?

Study4Class is built for everyday school tasks: quick calculations, writing support, timed practice, and review prep in one place. Instead of opening multiple sites or apps, you can switch between tools in seconds and keep your workflow in one browser tab.

No account is required, and most features run locally in your browser. Notes, checklists, and similar study data can stay on your device, which makes the tools practical for school computers, shared devices, or quick sessions between classes.

What you can do

Solve and check homework faster: use the calculator, quadratic solver, formula reference, fraction helper, percentage calculator, unit converter, sig figs helper, statistics sheet, right-triangle helper, line graph sketcher, base converter, dice/random numbers, GCD/LCM, nPr/nCr, and the date calculator when you need quick math, lab support, or planning.
Improve writing and assignments: use word counter for targets, typing test for speed/accuracy, citation helper for basic MLA/APA formatting, Markdown preview, reading-time estimates, the thesis outline builder, and text case for quick reformatting.
Stay organized during study sessions: run Pomodoro or timer/stopwatch, track tasks with the checklist, store class notes with Quick Notes or Cornell Notes, and shuffle lines or use the random picker when you need a fair order or volunteer.
Practice and review: build flashcards, run math practice drills, and estimate outcomes with GPA and final grade calculators before exams.
Use anywhere: all tools are browser-based, mobile-friendly, and designed to be simple enough for quick use during classwork or homework sessions.

Learn more

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