JEE Main Important Formulas 2026 for Physics, Chemistry, Maths, Download PDF
Check here the Last Minute Important Formulas to Revise for Success for JEE Exam 2026. The JEE syllabus covers a vast array of topics in Physics, Chemistry, and Mathematics, Read the complete article for complete PDF for formula.
The National Testing Agency (NTA) will hold the first set of JEE Main exams for the year 2026 on dates 21, 22, 23, 24, and 28 and 29th of January. The engineering entrance exam will consist of two shifts; morning and evening. While the morning will run from 9:00 AM to 12:00 PM, the evening will take place from 3:00 PM to 6:00 PM. Exams for these sets will occur at multiple exam centers. They will take place in various countries including abroad.
As you prepare for JEE 2025, revising important formulas is crucial to performing well in the exam. The JEE syllabus covers a vast array of topics in Physics, Chemistry, and Mathematics, and being well-versed in the key formulas will save you time and help you tackle problems with confidence. In this guide, we’ve compiled the most important formulas across all subjects to ensure you are well-prepared and can approach your JEE exam with a clear advantage.
JEE Main 2026 Hall Ticket: Direct Link
NTA has activated the link to download the JEE Mains admit card. Check the direct link below
JEE Main 2026 admit card download link:
Link 1 | Admit Card for JEE(Main)-2026 [Session-I] |
JEE Exam 2025: Chemistry Formula
1. The radius of a nucleus: R=R0 (A)1/3 cm
2. Planck’s Quantum theory: energy of one photon = hv =hc/λ
3. Principal quantum number (n)=1,2,3,4…to ∞
4. Orbital angular momentum of electron in any orbit = nh/2
5. Density: Specific gravity = density of the substance / density of water at 4 °C
6. Calculation of individual oxidation number:
Formula: Oxidation Number = number of electrons in the valence shell - number of electrons left after bonding.
7. 
8. 
JEE Exam 2025: Physics Formula
Measurement of any physical quantity is in terms of an internationally accepted certain basics standard called unit.
Fundamental units:
| S.No. | Physical Quantity | SI Unit | Symbol |
|---|---|---|---|
| 1 | Length | Metre | m |
| 2 | Mass | Kilogram | kg |
| 3 | Time | Second | s |
| 4 | Electric current | Ampere | A |
| 5 | Temperature | Kelvin | K |
| 6 | Luminous intensity | Candela | Cd |
| 7 | Amount of substance | Mole | mol |
Supplementary units:
| S.No. | Physical Quantity | SI Unit | Symbol |
|---|---|---|---|
| 1 | Plane angle | Radian | R |
| 2 | Solid angle | Steradian | Sr |
Metric prefixes:
| S.No. | Prefix | Symbol | Value |
|---|---|---|---|
| 1 | Centi | c | 10⁻² |
| 2 | Milli | m | 10⁻³ |
| 3 | Micro | µ | 10⁻⁶ |
| 4 | Nano | n | 10⁻⁹ |
| 5 | Pico | p | 10⁻¹² |
| 6 | Kilo | K | 10³ |
| 7 | Mega | M | 10⁶ |
JEE Exam 2025: Maths Formula
1.
2.
3. 
4. Area of the triangle formed by the pair of the tangents & its chord of contact= RL3 /R2+ L2
5. Equationof the circle circumscribing the triangle PT1T2 is: ( x - x1 )( x + g ) + ( y - y1 )( y + f ) = 0
6. Equationof standard parabola: y2 = 4ax vertex is (0,0), focus is (a,0),
Directrix is x+a=0 and Axis is y=0. Length of the latus rectum= 4a, ends of the latus rectum are L(a,2a) &
L’(a,-2a).
7. Auxiliary Circle:x2 + y2 = a2
8. Rectangularor equilateral hyperbola: xy = c2 , eccentricity is √2
9. Quadratic Equation : ax2 + bx + c = 0, a ≠ 0
JEE Exam 2025 Last Minute Preparation Tips
- Don’t Learn New Topics: Focus on revising what you already know instead of learning new concepts.
- Focus on Speed and Accuracy: Practice solving questions quickly without compromising on accuracy.
- Stay Hydrated and Eat Well: Keep your energy levels up by drinking water and eating healthy meals.
- Avoid Stress: Stay calm, trust your preparation, and maintain a positive attitude.
Check out complete prepration tips for JEE Exam 2025 Last Minute Preparation Tips for 7 days before your JEE exam. Focus on revising core concepts, taking mock tests, and staying calm.
Anisha Mishra is journalist with over 3 years of experience in covering the Indian education sector. She has worked extensively in the K12 domain, with focus on the state board as well as central board examinations, policy structure of seconday and higher secondary education as well as the entrance examinations like JEE, NEET, CLAT, etc. Her extensive experience in the domain has helped her provide students with concise accurate information in all aspectes of school life and education. Her key interest lies in decoding the changes in the curriculum, NEP implementation and changing education ecosystem in the country. Besides working, she enjoys traveling, exploring new places and cultures, and painting.
-1789127407555_t.webp)
