Calculate your result
Quick answer
Estimated subject mark = SBA × SBA weight ÷ 100 + examination × (100 − SBA weight) ÷ 100.
How it works
Estimate a subject result from a school-based assessment mark, examination mark and the weighting that applies to your subject.
Formula
Estimated subject mark = SBA × SBA weight ÷ 100 + examination × (100 − SBA weight) ÷ 100.
Assumptions and common mistakes
Check units, input values and the method before relying on an estimate. Review the existing tool notes and official sources below.
Quick answer
Estimated subject mark = SBA × SBA weight ÷ 100 + examination × (100 − SBA weight) ÷ 100.
Worked example
SBA 68% weighted at 25% and examination 62% weighted at 75% give 17 + 46.5 = 63.5%. The sample 25/75 split is an illustration, not a rule for every subject.
How to use the result
Use the weighting for your actual subject. Subjects with practical, oral or other components may need a different structure. This tool does not reproduce moderation, standardisation, concessions or the final mark issued by the examining authority.
Calculation reviewed 15 October 2026. Replace sample values with your own marks, weights or costs.
Frequently asked questions
How does the Matric Subject Percentage Calculator work?
Estimated subject mark = SBA × SBA weight ÷ 100 + examination × (100 − SBA weight) ÷ 100.
What should I check before using the result?
Use the weighting for your actual subject. Subjects with practical, oral or other components may need a different structure. This tool does not reproduce moderation, standardisation, concessions or the final mark issued by the examining authority.
Are my entries saved?
Calculator entries stay in your browser and are not submitted to the website database. Copy result includes the displayed entries if you choose to share it.
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