Practice papers for Cambridge IGCSE, built in minutes

Free for everyone until 30 November 2027: every account gets the Plus plan, 20 papers built and 60 downloads a month. No credit card required. About the Plus plan promotion ›

STEM Exam Builder is an IGCSE exam builder. It builds a practice paper for Cambridge IGCSE from past-paper questions from papers set between 2010 and 2025, sorted by syllabus topic and skill, each with its mark scheme. Pick the topics and print an A4 PDF with a cover page, and its mark scheme as a separate file.

Topics follow the current syllabus: exams in 2025-2027 for Maths and Add Maths, and 2026-2028 for Biology, Chemistry and Physics. Questions on content that has left the syllabus are hidden or marked 'older syllabus'.

Try the builder without signing up. Sign up and Plus is free until 30 November 2027.

Free topical papers

Free topical papers ›

Subjects

Plans

Every plan: all 5 subjects, the full question bank, topic, skill and marks filters, Mock exams, My papers and favourites, PDF with cover and mark scheme, use with ChatGPT and Claude.

Monthly subscriptions that renew each month; cancel any time. Pay by card, Apple Pay, Google Pay or Link.

How this compares with past papers, textbooks and question banks ›

Questions

What's included?
Past-paper questions for five Cambridge IGCSE subjects, sorted by syllabus topic and skill, each with its mark scheme. Every plan builds papers of up to 30 questions, or 40 on multiple-choice papers, and downloads A4 PDFs.
Is there a free account?
Yes. Until 30 November 2027 every account has the Plus plan at no charge: the full question bank, 20 papers built and 60 downloads a month. No credit card required. Pro is a paid plan. After that date your papers stay in your account and nothing is charged unless you choose a paid plan.
Already use another question bank?
Tick the same topics here and your paper is ready in about a minute. Every question comes with its mark scheme.
Which plan should I start with?
Until 30 November 2027 every account already has Plus at no charge, so start there: 20 papers built and 60 downloads a month. Choose Pro if you need more: 30 papers built and 100 downloads a month.
Can parents use it?
Yes. Until 30 November 2027 a parent's account has the Plus plan at no charge: pick the topics and marks, and print the paper with its mark scheme.
Do diagrams print at the right size?
Questions print at their original size (the few wider than A4 are shrunk to fit), so a 6 cm line measures 6 cm. Print at 100% (Actual size).
Can I download whole past papers?
Build new practice papers from real past-paper questions. Whole past papers are not hosted here.
Which years are covered?
Questions come from papers set between 2010 and 2025, and new series are added after they are released. You can narrow the range, for example to the last five years.
What does the PDF look like?
A4 pages with numbered questions and marks in brackets, and an optional cover page. Its mark scheme comes as a separate file, one click after the paper. You can also print each question's mark scheme right under it (multiple-choice papers show the answer under each question and a key at the end). Each page has a faint watermark, and stemexambuilder.com and your paper code in the footer.
Is the watermark removed on Pro?
Yes. Pro PDFs have no watermark, and the footer of every page shows your own name or centre name instead of stemexambuilder.com.
How does the AI connection work?
Press Connect AI in the app and follow the steps for ChatGPT or Claude. Ask it for a paper and it drafts one from real questions in the bank. Open the draft in My papers to check it, generate and download. You can revoke access at any time.
How can I pay?
By card, Apple Pay, Google Pay or Link. Plans are monthly subscriptions that renew each month, and you can cancel any time in Account.
Do you give refunds?
Refunds follow our Refunds policy, linked at the foot of this page. Email support@stemexambuilder.com with any question about a payment.

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