An ISC percentage calculator normally adds English to your three best other subjects and divides by 400, so English 85 with 96, 94 and 90 gives 365 out of 400, or 91.25 percent. Some admitting bodies instead use English plus the best four out of 500, which gives 89.4 percent for the same student.
The calculator above is set to English plus best three; keep a row named English and fill your other subjects. Below you will see how to get the best four figure, a comparison of every common method, a quick table, and which figure a form is likely to want.
At a glance
Usual method
(English + best 3 other subjects) / 400 x 100Alternative
(English + best 4) / 500 x 100, used by some bodiesEnglish
Compulsory in both methodsStatus
Common practice, not a published CISCE formulaWho decides
The college, university or admission bodyBoard
CISCE, Indian School Certificate (Class 12)
ISC % = (English + best three other subjects) / 400 x 100
For the best four version, add one more subject and divide by 500. Each ISC subject total is usually out of 100.
Setting up the ISC percentage calculator
Name one row English; the tool searches for that word so it can always count English. Your remaining subjects go in the other rows, for example Physics, Chemistry, Maths, Computer Science and Physical Education. Blank Out of means 100.
With English plus best three (ISC) ticked, the result is out of 400 and the working lists the four subjects used. For English plus best four, delete the rows of every subject except English and your four strongest others, then untick the box; the tool then adds those five out of 500.
- Enter English and every other subject with its marks.
- Keep the English plus best three box ticked for the 400 mark figure.
- For English plus best four, remove all but your four best other subjects and untick the box.
- Compare with the all subjects line in the result.
- Use the figure the admission form names.
ISC percentage calculator class 12 example
Marks: English 85, Physics 78, Chemistry 82, Maths 94, Computer Science 96, Physical Education 90.
English + best three: 96 + 94 + 90 = 280, plus 85 = 365. Then 365 / 400 x 100 = 91.25 percent.
English + best four: add Chemistry 82 to get 447. Then 447 / 500 x 100 = 89.4 percent.
All six: 525 / 600 x 100 = 87.5 percent.
| Counting method | Subjects used | Total | Percentage |
|---|---|---|---|
| English + best three | English 85, Computer Science 96, Maths 94, Physical Education 90 | 365 / 400 | 91.25 |
| English + best four | The above plus Chemistry 82 | 447 / 500 | 89.4 |
| All six subjects | Whole mark sheet | 525 / 600 | 87.5 |
| PCM only | Physics 78, Chemistry 82, Maths 94 | 254 / 300 | 84.67 |
Best three or best four: which one counts
English plus best three is how ISC scores are most often reported. Some universities and admission bodies use English plus the best four out of 500, and some want every subject. These methods come from common practice and secondary sources; we found no CISCE paper fixing one formula for admissions. So read the form, and if it is silent, ask the admission office which figure it wants.
Engineering and science forms may also ask for PCM or PCB separately. That is a different figure from the best three or best four, and the 12th percentage calculator explains how to count it.
Quick table for ISC totals
Use the left pair for English plus best three and the right pair for English plus best four.
| English + best three total | Out of 400 (%) | English + best four total | Out of 500 (%) |
|---|---|---|---|
| 300 | 75 | 375 | 75 |
| 320 | 80 | 400 | 80 |
| 340 | 85 | 425 | 85 |
| 352 | 88 | 440 | 88 |
| 365 | 91.25 | 447 | 89.4 |
| 372 | 93 | 465 | 93 |
| 380 | 95 | 475 | 95 |
| 390 | 97.5 | 488 | 97.6 |
Pitfalls with ISC figures
The main risk is quoting a figure built on a different method from the one the form uses.
| Pitfall | Why it hurts | How to avoid it |
|---|---|---|
| Quoting only the best three figure on every form | Some bodies want English plus best four, or all subjects | Work out each and use the one asked for |
| Leaving out English to raise the figure | English is compulsory in the usual ISC methods | Keep English in every count |
| Mixing ISC and ICSE methods | ICSE uses English plus best four out of 500 for Class 10 | Use the method that matches your exam |
| Using PCM when the form asks for aggregate | PCM is a separate eligibility figure | Read which figure the form names |
| Rounding 89.4 to 90 | Cut offs compare exact values | Keep the decimals |
ISC compared with ICSE and CBSE
Your Class 10 ICSE result is usually counted as English plus best four out of 500; see the ICSE percentage calculator. CBSE declares no percentage at all and lets the college choose five; the CBSE percentage calculator page covers that. Other boards sit on the marks percentage hub.
ISC results are marks based with no CGPA. If a form asks for one, there is no CISCE conversion; write the percentage and explain the method used.
Questions students ask
How is ISC percentage calculated?
The usual method adds English and your best three other subjects, divides by 400 and multiplies by 100. English 85 with 96, 94 and 90 gives 365, which is 91.25 percent.
Is ISC percentage out of 400 or 500?
Both are used. English plus best three is out of 400; some admission bodies use English plus best four out of 500. Check which one your form wants.
Is English compulsory in the ISC best of four?
Yes, in the usual methods English is always counted. The other subjects are your highest marks.
Can I use the ISC percentage calculator for PCM?
Yes. Untick the best three box and keep only Physics, Chemistry and Maths. Physics 78, Chemistry 82 and Maths 94 give 254 out of 300, which is 84.67 percent.
Does CISCE publish an official ISC percentage?
We found no CISCE document setting one formula for admissions. Best three and best four with English are common practice, and the admitting body decides which it uses.
What is the ISC 12th percentage for all subjects?
Add every subject and divide by the total maximum. Six subjects totalling 525 out of 600 give 87.5 percent. The result panel shows this all subjects line automatically.