Binary & Hex Visualiser — Free GCSE CS Tool
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Last edit: 26 October 2026
Resource Type Teaching Resources, Example Programs and Live Lessons, References, Guidebooks and Handbooks, Starter / Plenary
Curriculum Topic Computer Systems, Data & Information
English Key Stage 11-14 year (KS3), 14-16 years (KS4), 16-18 Years (KS5)
Scottish Curriculum Levels S4 - National 4/5 (15-16 years), S1-S3 (11 - 15 years), S5 Higher (16-17 years), S6 Advanced Higher (17-18 years)
Awarding Bodies AQA, OCR, WJEC EDQAS, Pearson / Edexcel
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Free interactive binary and hexadecimal visualiser for GCSE Computer Science. Convert between binary, denary, and hexadecimal instantly — place values are shown clearly at each step so students can see exactly how the conversion works, not just the answer.
Ideal for teaching number systems, practising conversions, and checking working. Supports binary addition and two’s complement.
No installation, no login, no setup required. Works on any device with a browser.
Supports AQA, OCR, and Eduqas specifications.