Study for an Exam With Free Browser Tools, Step by Step

You can prepare for an exam with a handful of free browser tools and no accounts: collect your notes in an online notepad, turn the key facts into flashcards, study in timed blocks, look up chemistry and symbols in reference tables, check your maths homework with calculators that show their working, and work out exactly what score you need. Tools that save your work keep it on your own device.

This guide follows one student with a chemistry final in three weeks, a maths problem set due first, and a scholarship that depends on GPA.

Where do the notes go before anything else?

Start with a dump, not a system. Open the online notepad and press New note once per lecture topic: "Stoichiometry", "Acids and bases", "Gas laws". The first line becomes each note's title, and the search box finds a word across all of them, which helps when you remember a definition but not which lecture it came from.

While you summarise, write each fact you'll need to recall on one line, as question, answer.

How do the notes become flashcards?

Copy those lines into the Flashcard Maker under Import many cards at once. In comma-separated input, only the first comma splits a line, so an answer such as Avogadro's number, 6.022 × 10²³ per mole, used to convert moles to particles stays in one piece. The question can't contain a comma unless it's in double quotes.

In Study, each card is either Again or Got it, and the five Leitner boxes decide how soon it returns. A useful trick is splitting decks by risk rather than by chapter: one for formulas and constants, one for concepts you must explain in words. Use the typed quiz for the first, since an exam won't offer four options for a constant, and multiple choice for the second.

Which facts should you look up instead of memorising?

Most chemistry exams hand you a periodic table, so memorising atomic masses is wasted effort; speed with the table is what counts. Practise with the interactive periodic table: filter by group or block, click an element and read its standard atomic weight and electron configuration until finding calcium or sulfur takes seconds.

Then check your stoichiometry with the molar mass calculator. A worked example: calcium carbonate, CaCO₃, is 40.078 + 12.011 + 3 × 15.999 = 100.086 g/mol, and calcium is about 40.04% of that by mass. Enter 25 g in the grams-to-moles box and you get roughly 0.250 mol. Do the sum by hand first and use the calculator to confirm it. If they disagree, check your capitals: Co is cobalt, CO is carbon monoxide.

When your notes need proper notation, the math symbols library copies characters like ≈, ⇌ and Δ, along with their LaTeX commands. For anything outside it, such as a subscript ₂ or a degree sign, the Unicode character explorer finds characters by name ("subscript two") and shows the code point.

How do you check maths homework without just copying answers?

Use calculators that show steps as a marking key: solve on paper first, then compare.

• Fractions. In the fraction calculator, 2/3 + 5/8 is rewritten over 24 as 16/24 + 15/24 = 31/24, shown as the mixed number 1 7/24 and about 1.2917. Got 7/11? You added tops and bottoms.
• Exponents. The exponent calculator can solve for the exponent too: 5ⁿ = 15,625 gives n = 6.
• Roots. The square root calculator simplifies radicals: √180 = √(36 × 5) = 6√5, about 13.416.

Any problem you only get right after peeking goes on a flashcard.

What score do you actually need?

In the grade calculator, our student enters labs 88% (weight 15), problem sets 94% (25) and the midterm 76% (30). That's (88 × 15 + 94 × 25 + 76 × 30) ÷ 70 = 85.0% so far, a B. With the final worth 30% and a target of 88%, the needed score is (88 − 85 × 0.7) ÷ 0.3 = 95%. A target of 90% would need about 101.7%, which is out of reach without extra credit. Aim for a solid 88 and stop worrying about 90.

The GPA calculator shows the bigger picture. Suppose this term is chemistry B+ (4 credits), statistics A- (3), writing A (3) and a 1-credit lab with a B. That's 13.2 + 11.1 + 12 + 3 = 39.3 grade points over 11 credits, a semester GPA of 3.57. Add a previous cumulative GPA of 3.40 over 45 credits, and the new cumulative GPA is 192.3 ÷ 56 = 3.43. Note that this tool counts A+ as 4.0, the same as A; if your school awards 4.3, adjust by hand.

How do you make the study hours count?

Use the Pomodoro timer and give each round one job: one round of flashcards, one round of past-paper problems, one round of rewriting a weak topic. Four focus rounds with their short breaks and the long break take 130 minutes, a solid evening session.

If the exam or your coursework is typed, check your speed once with the typing speed test in Sentences mode with punctuation on. At 30 WPM, a 600-word essay answer takes 20 minutes of pure typing before any thinking, worth knowing when you budget time per question.

What mistakes cost students the most?

• Rereading instead of recalling. Familiar isn't the same as known.
• Trusting a calculator answer you can't reproduce. The exam won't have the tool.
• Planning for a grade you can't reach. Run the numbers early.
• Losing everything to a browser clean-up. The notepad and flashcards save only in this browser, so export a JSON backup each week.

Exam-week checklist

1. Every lecture has a note, and every must-know fact has a card.
2. The formula deck passes the typed quiz.
3. You can find any element on the periodic table in seconds.
4. Every problem-set answer is checked, and the misses are on cards.
5. You know the final-exam score you need.

For more study and reference tools, browse the calculators and reference tools collections.