nuclear Calculators
Last updated: May 2026
Radioactive Decay Calculator
Compute how much of a radioactive isotope remains after a given elapsed time using its half-life.
Nuclear Binding Energy Calculator
Compute the total nuclear binding energy of an isotope from its mass defect using Einstein's E = mc².
Neutron Flux Calculator
Calculate neutron flux φ from neutron density and average neutron speed for reactor physics analysis.
Radiation Dose Calculator
Compute effective radiation dose in sieverts from absorbed dose, radiation weighting factor, and tissue weighting factor, following ICRP-103 conventions.
Critical Mass Calculator
Estimate the mass of a uniform-density fissile sphere given its known critical radius and material density.
Nuclear Reactor Power Calculator
Converts fission rate and energy per fission into thermal power output in megawatts.
Gamma Ray Attenuation Calculator
Calculates the transmitted gamma ray intensity after passing through a shielding material of known thickness and attenuation coefficient.
Radioactive Activity Calculator
Computes the radioactive activity of a sample in curies from its atom count and decay constant.
Nuclear Q-Value Calculator
Calculates the energy released or absorbed in a nuclear reaction from the mass difference between reactants and products in atomic mass units.
Nuclear Fuel Burnup Calculator
Calculates nuclear fuel burnup in MWd/kg from reactor power, operating time, and initial fuel mass.
Nuclear Decay Calculator
Determine how much of a radioactive isotope remains after a given time using its half-life.
Nuclear Fission Energy Calculator
Estimate the total energy released by a nuclear fuel load based on its mass, isotope type, enrichment level, and achieved burnup.
Reactor Criticality Calculator
Compute the neutron multiplication factor k for a nuclear reactor using the six-factor formula.
Radiation Dose Calculator
Estimate the gamma radiation dose rate received by a worker near a radioactive source, accounting for distance, exposure time, isotope type, and shielding.
Neutron Flux Calculator
Calculate the number of radioactive atoms produced when a target material is irradiated in a neutron flux, accounting for activation cross-section and decay during irradiation.
Nuclear Fuel Cycle Calculator
Estimate uranium mass and separative work units (SWU) needed to fuel a nuclear power reactor over one cycle.
Radiation Shielding Calculator
Calculate the thickness of shielding material needed to reduce gamma radiation from an initial intensity to a safe target level.
Nuclear Waste Heat Calculator
Estimate the decay heat power still being generated in a shutdown nuclear reactor or spent fuel assembly using the ANS-5.1 standard approximation.
Reactor Kinetics Calculator
Calculate how a nuclear reactor's power level changes over time following a sudden reactivity insertion.
Radiation Dose Conversion Calculator
Convert radiation dose measurements between rem, sievert, rad, and gray, with adjustment for radiation type weighting factor.
Nuclear Criticality Calculator
Compute the effective neutron multiplication factor (k_eff) for a fissile system using the six-factor formula.
Gamma Ray Attenuation Calculator
Calculate the transmitted gamma-ray intensity through a shielding material of given thickness, accounting for buildup of scattered photons.
Nuclear Fission Yield Calculator
Calculate the total thermal energy released by a nuclear fission process over a given time interval, given the fission rate and energy per fission event.
Nuclear Reactor Period Calculator
Estimate the effective reactor period — the e-folding time of power change — from measured power levels, reactivity, and prompt neutron lifetime.
Neutron Activation Analysis Calculator
Calculate the induced radioactivity (activation) of a target material irradiated by a neutron flux, accounting for saturation effects.
Nuclear Fuel Burnup Calculator
Estimates nuclear fuel burnup in MWd/tonne based on specific power, operating time, thermal efficiency, and initial U-235 enrichment.
Nuclear Decay Rate Calculator
Calculates the number of radioactive atoms remaining after a given time using the half-life decay law.
Nuclear Reactor Power Output Calculator
Calculates annual electrical energy output of a nuclear reactor from thermal power, efficiency, capacity factor, and operating days.
Radiation Dose Exposure Calculator
Calculates effective radiation dose received by a person based on dose rate, exposure time, distance from source, shielding, and body weight.
Nuclear Criticality Safety Calculator
Estimates the criticality safety margin for fissile material configurations by computing an effective neutron multiplication proxy based on concentration, geometry, moderator ratio, reflector thickness, and temperature.
Nuclear Waste Storage Calculator
Estimates nuclear waste storage requirements, decay heat, and containment costs based on waste volume, activity level, storage period, waste category, and containment type.
Neutron Flux Distribution Calculator
Calculates the total neutron population and effective reaction rate within a cylindrical reactor core using thermal and fast flux, core geometry, and a standard neutron yield constant.
Nuclear Radiation Shielding Calculator
Calculates the required shielding thickness to reduce gamma radiation from a radioactive source to a safe dose rate at a given working distance.
Nuclear Power Plant Economics Calculator
Computes the levelised cost of electricity (LCOE) for a nuclear power plant by combining capital investment, discounted O&M costs, plant capacity, capacity factor, and operational lifetime.
Nuclear Emergency Response Calculator
Estimates the required emergency planning zone radius during a nuclear incident based on release amount, wind speed, atmospheric stability, evacuation time, and population density.
Radioactive Decay Activity Calculator
Determine the remaining radioactive activity of a nuclear isotope after a given time has elapsed.
Nuclear Reactor Power Calculator
Compute the net electrical output of a nuclear power plant from its thermal power rating, thermodynamic efficiency, and capacity factor.
Nuclear Criticality Calculator
Calculate the effective neutron multiplication factor (k_eff) of a nuclear reactor using the six-factor formula to assess whether the reactor is subcritical, critical, or supercritical.
Nuclear Waste Heat Calculator
Estimate the decay heat generated by spent nuclear fuel assemblies as a function of cooling time, burnup level, and fuel mass.
Neutron Flux Calculator
Calculate the neutron reaction rate in a nuclear material given neutron density, velocity, microscopic cross-section, and target atom density.
Fission Product Inventory Calculator
Estimates the radioactive inventory of a specific fission product in a reactor core after a given operating period.
Nuclear Accident Dose Calculator
Estimates downwind radiation dose from an atmospheric radioactive release based on activity, weather stability, wind speed, and distance.
Radiation Shielding Calculator
Calculates the transmitted radiation intensity after passing through a shielding material using the Beer-Lambert attenuation law.
Nuclear Reactor Criticality Calculator
Computes the neutron multiplication factor k-effective for a nuclear reactor using the six-factor formula.
Gamma Ray Energy Calculator
Converts between gamma-ray photon energy, wavelength, and frequency using Planck's relation and the wave equation.
Radiation Dose Calculator
Calculates effective radiation dose by combining absorbed dose, radiation type weighting, and tissue sensitivity.
Nuclear Waste Activity Calculator
Estimates the remaining radioactive activity of nuclear waste after a given storage period, accounting for radioactive decay and a safety reduction factor.