L1R5 calculator Singapore: O-Level gross to net
Use this tool to compute your L1R5 gross score (based on MOE’s subject categories for R1/R2/R3), then subtract bonus points to estimate your net L1R5 for current JC admission. This includes JC courses leading to the A-Level or IB Diploma.
Last updated: 19 July 2026
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How to calculate L1R5 quickly
Use English or Higher Mother Tongue Language as L1. Then add one Humanities subject as R1, one Mathematics or Science subject as R2, one Humanities, Mathematics or Science subject as R3, and your two best remaining eligible subjects as R4 and R5. The calculator finds the lowest valid total from the grades entered.
Use this L1R5 calculator only through the 2027 JAE
MOE will replace L1R5 with L1R4 for JC admission in the new 2028 PSE. The JC gross-score threshold will change from 20 to 16, and the ordinary bonus-point cap will change from 4 to 3. MI already uses L1R4, so this calculator is not an MI calculator.
L1R5 calculator (gross → net)
Pick your O-Level grades and we will compute your lowest possible L1R5 gross score under MOE’s subject category rules (R1/R2/R3), then subtract the bonus total you enter. This tool applies to JC admission through the 2027 JAE only. Your MOE Form A remains the official computation.
Shareable links store only your selected grades/categories + bonus.
Next step
Once you have your net L1R5, shortlist schools using our JAE cut-off points tool. Published entry score ranges are historical references, not guarantees of admission:
Considering retaking O-Levels?
Eligible JAE applicants can request a computation using results from no more than two O-Level sittings. If the same subject was taken in both selected years, MOE uses the better grade. A retake does not by itself guarantee that you remain eligible for JAE, so check your applicant profile before registering.
- Retake O-Levels in Singapore 2026 - which subjects to retake, combining results, registration
- O-Level Private Candidate Complete Guide 2026 - eligibility, subjects, fees, practical requirements
- O-Level Results 2026: Your Options - JC, polytechnic, ITE, or retake?
Sources
- MOE - current JC and MI admission information: Junior colleges and Millennia Institute (JAE).
- MOE - O-Level subjects and categories (Humanities/Math/Science): GCE O-Level subjects and categories.
- MOE - current L1R5 and 2028 L1R4 subject requirements: Revised JC admission criteria infosheet.
- MOE - full 2028 PSE L1R4 rules: JC and MI admission criteria from 2028 PSE.
- MOE - applicant eligibility and combining results: JAE eligibility.