Step 1 — find the official formula
Each Pakistani university publishes its merit formula in the prospectus. Start there. If you're applying for MBBS in Punjab, the formula is set by UHS (10% Matric + 40% FSc + 50% MDCAT). For NUST, it's 75 + 75 + 10. For FAST, 50 + 50.
Step 2 — convert to a percentage of obtained / total
Always work in obtained/total — not raw marks. So if you scored 1020/1100 in FSc, your FSc percentage is 92.72%. Multiply that by the formula's FSc weight (e.g. 0.40 for KEMU) to get the FSc contribution.
Step 3 — sum and round to 2 decimal places
Round each contribution to 4 decimal places, then sum and round the final aggregate to 2 decimal places (this matches what merit committees publish).
Worked example — KEMU MBBS
- Matric: 1000/1100 = 90.909% × 0.10 = 9.0909
- FSc: 1020/1100 = 92.727% × 0.40 = 37.0908
- MDCAT: 178/200 = 89.000% × 0.50 = 44.5000
- Aggregate = 90.6817% — competitive but tight for KEMU open merit