NEET 2026 Important Formulas include important equations from Physics (Kinematics, Optics, Electricity), Chemistry (Thermodynamics, Kinetics, Equilibrium), and important Biology constants. This information is based on analysis of NEET PYQs (2016–2025). It is witnessed that approximately 3-6 times these formulas appear and are important for scoring high marks in the exam.
Introduction
If you are a NEET 2026 aspirant, then you might have noticed how many formulas there are in Physics and Chemistry. And due to this, the preparation feels like never ending. And it becomes hard to memorise everything at once, which leads to confusion after some point.
There is one thing that I have noticed and experienced after NEET PYQ analysis: not all the formulas in the syllabus are important. But there are some that frequently come almost every year, and there are a few chapters that regularly give 4-6 questions. Still, there are so many students who do not pay attention to this and waste their time (race against time phrase meaning) on things that are not that important.
So instead of reading everything, this blog helps the student in analysing what is actually asked. The NEET formula list given in this blog is based on NEET previous year question papers from 2016 to 2025. In this list, we have mentioned the NEET Important formulas that keep on repeating in the exam, and we have also mentioned their respective chapters. Everything listed below is matched with the official NMC NEET 2026 syllabus (79 chapters, released December 2025), so that students do not study anything extra.
If you are a student who has just (just in case definition) started revision or you are a student who is revising in the last days before NEET 2026, then this blog can make things a bit clearer and manageable for you.
Read More:
- NEET Previous Year Question Papers with Solutions
- NEET 2026 Last Minute Preparation Tips by Experts and Toppers
Why Formula Revision Is Crucial for NEET 2026 Preparation
NEET is not like board exams. You cannot afford to spend 4 minutes on one question. Most Physics and Chemistry questions, even the conceptual ones, require you to recall a formula fast and apply it correctly under pressure.
And this is why NEET Formula revision is treated as a skill, because in this, you need to:
- Know the formula without thinking
- Know what each variable means
- Know the unit and common traps
This blog provides you with the NEET formula list that will help you boost your NEET Revision.
Check Out: How to Make Short Notes for NEET Exam 2026: Smart Tips to Boost Your Score
NEET 2026 Physics Important Formulas (Chapter-Wise & PYQ Trends)
In the NEET exam, Physics as a subject comprises 45 questions. Based on last year’s papers’ analysis of NEET PYQs, below we have curated a formula sheet that shows the formulas that are repeatedly asked in the exam. Studying these formulas can result in a high ROI for NEET Physics 2026.
| Formula | Chapter | Topic | Appearances in Previous Year Papers |
| v² = u² + 2as | Kinematics | Equations of Motion | 6 times |
| F = kq₁q₂/r² | Electrostatics | Coulomb’s Law | 5 times |
| E = hν (or hc/λ) | Modern Physics | Photoelectric Effect | 6 times |
| 1/f = 1/v − 1/u | Ray Optics | Lens/Mirror Formula | 5 times |
| V = IR | Current Electricity | Ohm’s Law | 5 times |
| F = BIL sin θ | Magnetic Effects of Current | Force on Current-Carrying Conductor | 5 times |
| KE = ½mv² | Work, Energy & Power | Kinetic Energy | 5 times |
| PV = nRT | Kinetic Theory of Gases | Ideal Gas Equation | 4 times |
| λ = h/mv | Modern Physics | de Broglie Wavelength | 4 times |
| T = 2π√(l/g) | Oscillations (SHM) | Time Period of Simple Pendulum | 4 times |
| F = GMm/r² | Gravitation | Newton’s Law of Gravitation | 4 times |
| P = V²/R = I²R | Current Electricity | Electric Power | 4 times |
| n₁ sin θ₁ = n₂ sin θ₂ | Ray Optics | Snell’s Law | 3 times |
| ΔU = Q − W | Thermodynamics | First Law of Thermodynamics | 3 times |
Note: The appearance count of the NEET formula is determined by NEET PYQs of direct application questions between 2016 and 2025. Questions that used the formula indirectly might not be included.
Chapters that are frequently repeated in Physics are: Ray Optics, Modern Physics, and Current Electricity. These chapters consistently contribute about 3-5 questions each per year. If you have less time to prepare, then you can refer to this.
Check Out: NEET 2026 Preparation: Five Common Mistakes that Bring Down Your Score
NEET 2026 Chemistry Important Formulas (Chapter-Wise & High Weightage Topics)
In the NEET exam, Chemistry comprises 45 questions. In chemistry, the Physical Chemistry section is generally formula-based. Given below are some important NEET Chemistry formulas for 2026 that are based on frequency data analysed from NEET PYQs.
| Formula | Chapter | Topic | Appearances in Previous Year Papers |
| pH = −log[H⁺] | Ionic Equilibrium | pH Calculation | 6 times |
| t₁/₂ = 0.693/k | Chemical Kinetics | Half-Life (First Order) | 6 times |
| Rate = k[A]ⁿ | Chemical Kinetics | Rate Law Expression | 5 times |
| ΔG = ΔH − TΔS | Thermodynamics | Gibbs Free Energy | 5 times |
| Moles = Mass / Molar Mass | Some Basic Concepts | Mole Concept | 5 times |
| Kc = [Products]/[Reactants] | Chemical Equilibrium | Equilibrium Constant | 5 times |
| E = E° − (0.0592/n) log Q | Electrochemistry | Nernst Equation | 5 times |
| PV = nRT* | Kinetic Theory context* | Ideal Gas (via KTG) | 4 times |
| ΔTf = Kf × m | Solutions | Depression in Freezing Point | 4 times |
| π = iCRT | Solutions | Osmotic Pressure | 4 times |
| ΔH = ΔU + ΔngRT | Thermodynamics | Enthalpy–Internal Energy | 4 times |
| k = Ae^(−Ea/RT) | Chemical Kinetics | Arrhenius Equation | 3 times |
| w = −Pext × ΔV | Thermodynamics | Work Done by Gas | 3 times |
| N = Molarity × n-factor | Solutions/Redox | Normality Calculation | 3 times |
Note: The States of Matter topic has been removed from the NEET 2026 syllabus. So, PV = nRT comes as the Kinetic theory of gases (Physics) and generally in context with physical chemistry. There is no need to prepare the states of matter as a separate chapter.
Chapters that are mostly repeated in Chemistry are: Chemical Kinetics, Thermodynamics, and Ionic Equilibrium. They are the three most important chapters of NEET physical chemistry. As per analysis, together they contribute to around 8-10 questions every year.
Check Out: How to Score 700+ Marks in NEET UG 2026 Exam
NEET 2026 Deleted Syllabus: Chapters You Should Not Study
This is one part that formula blogs do not mention at all. And it wastes a lot of time for students in their preparation phase.
NMC formally decreased the NEET syllabus to 79 chapters in 2024. Such deletions remained the same up to 2025 and now 2026. You may still find yourself with these chapters in your schedule without actually knowing that they have been removed. It can happen if you are studying notes or coaching content that was written before 2024.
Here is a clean subject-wise list of what has been removed:
NEET 2026 Chemistry Deleted Chapters (Avoid These Topics)
| Chemistry | Removed Chapters / Topics |
| Chemistry | Solid State (full chapter) |
| Surface Chemistry (full chapter) | |
| Polymers (full chapter) | |
| Chemistry in Everyday Life (full chapter) | |
| Hydrogen (full chapter) | |
| s-Block Elements (full chapter) | |
| Environmental Chemistry (full chapter) | |
| States of Matter (significant portions — PV=nRT tested via Kinetic Theory only) |
NEET 2026 Physics Deleted Topics (Updated Syllabus Breakdown)
| Physics | Removed Chapters / Topics |
| Physics | Momentum Conservation in Rotational Motion |
| Certain derivation-heavy sub-topics from Kinematics | |
| Some descriptive portions of Laws of Motion | |
| Select topics from Thermodynamics (First Law, Carnot cycle still included) |
NEET 2026 Biology Deleted Topics You Must Skip
| Biology | Removed Chapters / Topics |
| Biology | Reproduction in Organisms (major portions) |
| Environmental Issues (full topic) | |
| Transport in Plants | |
| Selected topics from Ecology and Environment | |
| Certain descriptive topics from Diversity in the Living World |
Note: All formulas listed in the Physics and Chemistry tables above are from chapters that are still part of the 2026 syllabus.
Top 6 Benefits of Revising NEET Important Formulas Daily
A lot of students consider revising formulas to be boring. But listed below are the benefits that they give you in your NEET exam.
- Saves Critical Time in the Exam: When you have learned the formula by heart, you skip the “what was the formula” moment in the exam. Those 20–30 seconds per question add up to 15+ minutes over the full paper. That is enough time to attempt 5 extra questions.
- Builds Confidence for Numerical Questions: Students who do not have a good command of formulas often leave the question. Those who do pick up easy marks. In a competitive exam like NEET, even 4 extra marks can change your rank by thousands.
- Helps You Eliminate Wrong Options Faster: Even when you are not 100% sure of the answer, knowing the formula helps you eliminate options that are dimensionally wrong or mathematically impossible. This is an actual strategy, which is effective.
- Connects Concepts Across Topics: Many NEET questions are indirect; they test how well you connect one concept with another. When you revise formulas regularly, you start seeing these connections. For example, the Nernst equation connects Electrochemistry with Thermodynamics. Students who know both see through such questions easily.
- Lessens Exam Anxiety: Practising the formula consistently, whether in 20 minutes a day, constructs a sort of silent confidence that cannot be easily shaken by exam stress.
- Directly Translates Into Marks: The formulas mentioned in the table above are the one who appeared in the previous year’s exams for about 3-6 If you know them cold, you are essentially solving repeated questions. That is not exam hacking; it is about smart preparation.
How to Use This NEET 2026 Formula Guide for Maximum Score
Knowing the formulas is step one. Using them effectively is step two. Here is a simple, practical plan:
- Make a Formula Diary (Week 1) – Write down all formulas in a little notebook. Write out each formula, the meaning of the variables used, and an example of one application of the formula.
- Sort by Your Weak Chapters (Week 1–2) – Check for the column that says “times appeared”, then start with chapters that you are comparatively weak in and then move to formulas that have appeared frequently.
- Daily Formula Recall (Ongoing) – Select 5-7 formulas each morning and memorise them without reviewing your notes. This is an active recall, and it is much more efficient than passive reading.
- Solve PYQs After Each Formula Group (Weekly) – After revising a chapter’s formulas, solve 10–15 previous year questions from that chapter.
- Revision Cycle Every 10 Days – Set a reminder to go through the full formula list once every 10 days.
- Mock Test Application – While solving NEET mock tests, write down the formulas that you forgot or got confused about. Write them down in a notebook, and while revising concepts, give extra attention to them.
How NTA Frames NEET Questions Using Important Formulas (PYQ Pattern)
NTA rarely tests a formula in its raw form. Instead, they test your ability to apply the formula when one or two variables are changed, hidden, or expressed differently.
Understand this with an example – In a question paper, they would not want you to directly use v 2 = u 2 + 2as, but would provide you with a situation where you first find the acceleration using another formula, and then substitute it in. The formula itself is the same. The question is layered.
This is why just memorising formulas is not enough. You need to:
- Know what happens when one variable increases or decreases (qualitative understanding)
- Practice derivation-level questions at least once per formula
- Solve questions where the formula appears in a “disguised” form
The PYQ frequency data in the tables above show NTA’s preference. The more times a formula has appeared, the more ways NTA has found to ask it. Those are the ones worth going deep on.
NEET 2026 Important Formulas FAQs (Most Asked Student Questions)
Q1. How many formulas should I memorise for NEET 2026?
There is no fixed number. But if you focus on the formulas listed in this blog, roughly 28 for Physics and Chemistry combined, you will have covered the highest-frequency content. Add another 20–25 Biology data points, and you have a solid formula base for NEET 2026.
Q2. Is it possible to solve Physics without memorising every formula?
Some students try to derive formulas during the exam. That is risky. Derivations take (take with a grain of salt idiom synonym) time, and exam pressure makes you forget steps. It is far safer to remember key formulas and their conditions.
Q3. Which subject has the most formula-based questions in NEET?
Physics has the most direct formula application questions, usually 15–20 out of 45. Chemistry (Physical Chemistry part) has around 8–12. Biology is mostly conceptual, but has values to remember.
Q4. Should I make chapter-wise formula sheets or one master sheet?
Start with chapter-wise sheets. After getting used to it, make a master sheet that you can revise anytime. Initial learning is more suited to the chapter-wise approach since it provides context.
Q5. My NEET exam is in 60 days. Which formulas should I prioritise?
Pay attention to the formulas that appear 4 or more times in the table above. In Physics: Ray Optics, Modern Physics, Kinematics, and Current Electricity. Chemistry: Chemical Kinetics, Ionic Equilibrium, Thermodynamics. These chapters are alone capable of earning you 20+ marks in case they are prepared well.
Q6. Do formulas from Class 11 appear in NEET, or is it mostly Class 12?
Formulas from both classes appear. Approximately 50 per cent of the paper taken by NTA is by Class 11, and the remaining 50 per cent by Class 12. In Physics, chapters like Kinematics, Laws of Motion, Gravitation, and Thermodynamics are in Class 11. Class 11 must not be overlooked in the revision of your NEET formula.
Q7. Do NEET toppers actually use formula sheets?
Yes, and most of them have multiple versions made at different stages. Early revision uses detailed sheets. Final revision uses short, symbol-only sheets. The point is consistent, repeated recall, not the format.
Q8. Are the deleted chapters completely out of scope for NEET 2026?
According to the notification of NTA and syllabus aligned to NCERT, formally, yes, questions are not to be asked on deleted chapters. However, there is a small chance of conceptual overlap in indirect questions. Basic awareness is fine, but do not spend heavy revision time on removed content.
Final Thoughts
NEET 2026 is going to be competitive. NTA has been consistent in testing the same high-frequency chapters and formulas year after year. That is actually good news for you; it means the effort you put into the right formulas will pay off directly.
Do not try to cover everything. Follow a strategy, use the tables provided in the blog, then identify which you will put in high priority and practice this way. Revise them daily. Test yourself with PYQs. Repeat. In order to crack NEET, it is not compulsory that you have to be a genius. You need to be consistent with the right material.
This blog is based on the information derived from the analysis of NEET PYQs from 2016 to 2025. Formula frequency counts are approximate and based on direct application in questions. It is recommended that students always verify the information with the official NTA resources and with the study materials provided by their coaching.
Author and Content Credibility:
Written By: Saumya Sarin (Content Writer with 3+ years of experience), Reviewed By: Senior NEET Physics & Chemistry Faculties, Last Updated: April, 2026.
