SPM Biology tools

Student learning SPM Biology revision tools with a Biology tutor

Interactive tools to plan your revision and check your Biology working, countdowns, calculators, a Punnett square builder and a classification key explorer.

Plan your revision

SPM countdownCount down the days and weeks to your SPM Biology paper.Study-hours calculatorTurn your target grade and weeks left into weekly Biology study hours.Chapter priority plannerRate your confidence per chapter to get an ordered revision plan.

Calculate and practise

Punnett square calculatorEnter parental genotypes to get the offspring grid and ratios.Genetics ratio solverEnter observed offspring counts to find the closest genetic ratio.Magnification calculatorWork out magnification, image size or actual size from the other two.Classification key explorerWalk through a dichotomous key to classify an organism.

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Written by the spmbiology.com.my editorial team · Updated 2026-09-08