Particle Physics Calculators

About Particle Physics Calculators

CalculatorPod provides 19 free particle physics calculators that you can use directly in your browser — no login, no app download, no cost. Each tool is built with accurate, formula-driven logic and instant results so you can get answers in seconds.

All calculators tagged particle physics are optimised for both desktop and mobile, and include step-by-step explanations, worked examples, and FAQs to help you understand the numbers - not just the answer.

Calculators in This Collection

• Bethe-Bloch Energy Loss Calculator - Compute the Bethe-Bloch mean ionization energy loss (dE/dx) for muons, pions, kaons, and protons through silicon, copper, lead, and more. Free.
• Moliere Radius Calculator - Compute the Moliere radius Rm, the transverse shower containment radius used in calorimeter design, for six preset materials or a custom one. Free.
• Radiation Length Calculator - Compute the radiation length X0 (in g/cm2 and cm) for silicon, aluminum, iron, copper, tungsten, lead, or any custom material using Tsai's formula. Free.
• Synchrotron Radiation Critical Frequency Calculator - Compute the synchrotron radiation critical photon energy and frequency from beam energy and bending radius, or from beam energy and field. Free.
• Transition Radiation Threshold Calculator - Estimate the transition radiation threshold Lorentz factor and plasma energy for polypropylene, Mylar, lithium, or beryllium radiators. Free.
• Alpha Decay Q-Value Calculator - Compute the alpha decay Q-value and the kinetic energy split between the alpha particle and recoiling daughter nucleus. Free physics calculator.
• Beta Decay Q-Value Calculator - Compute the Q-value for beta-minus decay, beta-plus decay, or electron capture from the parent and daughter atomic masses. Free physics calculator.
• Branching Ratio Calculator - Calculate branching ratios for particle decay channels from partial decay widths using BR = Γᵢ/Γ_total. Free calculator, supports up to 4 channels.
• Breit-Wigner Resonance Calculator - Compute the Breit-Wigner resonance lineshape f(E) and cross section at any energy from a particle's mass and decay width. Free physics calculator.
• Feynman Diagram Kinematics Calculator - Compute the momentum and energies of two decay products at a Feynman diagram vertex from the parent and daughter particle masses. Free calculator.
• Mandelstam Variables Calculator - Calculate the Mandelstam invariants s, t, and u for massless 2-to-2 scattering from the center-of-mass energy and scattering angle. Free calculator.
• PMNS Matrix Parameter Calculator - Compute the neutrino PMNS mixing matrix element probabilities from the three mixing angles and the CP-violating phase. Free physics calculator.
• Compton Wavelength Calculator - Calculate the Compton wavelength λ = h/(mc) for electrons, protons, neutrons, muons, or any custom rest mass instantly. Free online calculator.
• Cross-Section and Luminosity Calculator - Calculate a collider's event rate and total events from Rate=L×σ, given instantaneous luminosity, cross-section, and running time. Free calculator.
• Neutrino Oscillation Probability Calculator - Calculate the two-flavor neutrino oscillation probability P=sin²(2θ)sin²(1.267Δm²L/E) for a mixing angle, mass-squared splitting, baseline, energy.
• Particle Decay Width and Lifetime Calculator - Convert between a particle's decay width Γ and its mean lifetime τ using τ=ħ/Γ, the energy-time uncertainty relation for unstable states. Free calculator.
• Relativistic Kinetic Energy Calculator - Calculate relativistic kinetic energy KE=(gamma-1)mc^2 for electrons, protons, or custom particles near light speed. Free online physics calculator.
• Relativistic Momentum Calculator - Calculate relativistic momentum p=gamma*m*v for electrons, protons, or custom particles at any fraction of light speed. Free online physics calculator.
• Relativistic Velocity Addition Calculator - Calculate relativistic velocity addition u prime=(u+v)/(1+uv/c^2), the correct way to combine speeds near light speed. Free online physics calculator.

How to Use These Calculators

Every calculator on CalculatorPod follows a consistent three-step pattern:

1. Enter your values - fill in the input fields. Each field has a label and a sensible default so you can start immediately.
2. Click Calculate - results appear instantly without a page reload. No waiting.
3. Read the breakdown - results are accompanied by a formula explanation and a worked example so you can verify the logic yourself.

All tools run entirely in your browser. Your data is never sent to a server, ensuring complete privacy.

Why Use CalculatorPod?

CalculatorPod is a free, no-signup calculator platform covering finance, math, health, science, engineering, and everyday use. Every calculator is hand-built with verified formulas - not generated approximations - and cross-checked against standard references.

Unlike generic formula pages, each CalculatorPod calculator is interactive: enter real numbers and see real results instantly. The formulas and worked examples alongside each tool mean you understand why the answer is what it is.