PIEAS aggregate = 0.60 × your test percentile + 0.25 × your HSSC Part I percentage + 0.15 × your SSC percentage. The key point: the test part uses your percentile, not your raw score. A percentile of 85 with 88% in Part I and 90% in SSC gives 86.5000.
PIEAS defines the percentile as the percentage of applicants who scored equal to or below you. It comes with your test result. Enter it in the first row, out of 100.
Worked example
A student has a test percentile of 85, 88% in HSSC Part I and 90% in SSC.
- Test: 0.60 × 85 = 51.0000
- HSSC Part I: 0.25 × 88 = 22.0000
- SSC: 0.15 × 90 = 13.5000
- Aggregate: 86.5000
With marks instead of percentages
If you have marks, change the "Out of" boxes to your board totals. Part I 480 out of 550 is 87.27%, and SSC 1,000 out of 1,100 is 90.91%. With the same percentile of 85:
- Test: 0.60 × 85 = 51.0000
- Part I: 0.25 × 87.2727 = 21.8182
- SSC: 0.15 × 90.9091 = 13.6364
- Aggregate: 86.4545
How the percentile moves your aggregate
The test is 60% of the merit, so each percentile point adds 0.6. Keeping Part I at 88% and SSC at 90%:
| Test percentile | PIEAS aggregate |
|---|---|
| 60 | 71.5000 |
| 70 | 77.5000 |
| 80 | 83.5000 |
| 90 | 89.5000 |
| 95 | 92.5000 |
Type a target aggregate in the calculator's optional box to see the percentile you need. With 88% and 90%, an aggregate of 90 needs a percentile of 91.
Academic marks can only move you so far. Going from 88% to 93% in Part I adds 1.25 points; moving from the 80th to the 90th percentile adds 6.
Percentile versus percentage
Say the test was hard and you scored 55%. If most candidates scored lower, your percentile might be 80 or more. Entering 55 instead of 80 gives 68.5000 instead of 83.5000 with the academic marks above, a gap of 15 points.
The reverse also happens on an easy test. A high raw score can sit on a middling percentile. Always use the percentile PIEAS gives you.
Other engineering universities use raw test percentages. Compare with the UET Lahore aggregate calculator or the NUST aggregate calculator if you are applying there too.
The PIEAS written test
The test has 100 multiple-choice questions with four options each, in 3 hours. There is no negative marking, so answer every question. The paper depends on your HSSC group:
| HSSC group | English | Mathematics | Physics | Third subject |
|---|---|---|---|---|
| Pre-engineering | 10 | 30 (HSSC level) | 30 (HSSC level) | Chemistry 30 |
| Pre-medical | 10 | 30 (SSC level) | 30 (HSSC level) | Chemistry 30 |
| ICS | 10 | 30 (HSSC level) | 30 (HSSC level) | Computer science 30 |
| Science general | 10 | 60 (HSSC level) | 30 (SSC level) | none |
PIEAS also accepts SAT-II scores in physics, chemistry and Mathematics Level II, with at least 2,000 in total, using PIEAS code 7272. You can apply through the PIEAS test, SAT-II or both. General SAT scores are not accepted.
Eligibility and programmes
PIEAS offers BS Electrical, Mechanical, Chemical, and Metallurgy and Materials Engineering, plus BS Computer and Information Sciences and BS Physics. You need at least 60% in both Matric and Intermediate (Part I, Part II or A level). Candidates awaiting results can apply if they reach 60% by the time they join.
- Engineering: physics, chemistry and mathematics (pre-engineering), or physics, mathematics and computer science (ICS). Pre-medical students who passed the additional mathematics paper can also apply. DAE holders with 60% are eligible as PEC policy allows.
- Computer and Information Sciences and Physics: pre-engineering, pre-medical or ICS. Science general students with mathematics can apply for CIS.
For the 2026 to 2030 session, PIEAS held written tests on 12 April and 12 July 2026, put out merit lists from 27 July to 1 September, and students joined on 7 September 2026.
The formula is from the PIEAS admission FAQs and covers BS programmes. Read the PIEAS information leaflet for your session, as eligibility conditions can change. We do not publish closing merits.
PIEAS aggregate questions
How is the PIEAS aggregate calculated?
PIEAS uses 0.60 × test percentile + 0.25 × HSSC Part I percentage + 0.15 × SSC percentage. With a percentile of 85, 88% in Part I and 90% in SSC, the aggregate is 51 + 22 + 13.5 = 86.5000. This formula is from the PIEAS admission FAQs.
What is a test percentile in PIEAS?
It shows the share of applicants who scored equal to or below you. A percentile of 85 means 85% of test takers scored the same as you or lower. It is not your marks or your percentage, so a hard or easy paper does not shift everyone's merit.
Does PIEAS use full FSc or Part I?
Part I. The formula names HSSC Part 1 percentage for the 25% share. Enter your first-year percentage, or your first-year marks with the right total, and the calculator converts it. Using full FSc marks gives a different figure from PIEAS's own.
Is there negative marking in the PIEAS test?
No. The PIEAS written test for BS programmes has 100 multiple-choice questions in 3 hours with no negative marking. Pre-engineering, pre-medical, ICS and science general students each sit a paper matched to their subjects.
Why is my PIEAS aggregate lower than I expected?
The most common reason is entering a raw test score or percentage instead of the percentile. The test is 60% of the aggregate, so this mistake has a big effect. Check the percentile on your PIEAS result.
Last reviewed 2 October 2026. Results are estimates; official notices always take precedence.