Nuclear Calculators
Last updated: October 2026
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 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 Fuel Burnup Calculator
Calculates nuclear fuel burnup in MWd/kg (the same number as GWd/t) from reactor thermal power, effective full-power days and the uranium mass in the core.
Nuclear Reactor Period Calculator
Calculates the reactor period, the time for power to change by a factor of e, from a measured power change or from reactivity with one delayed neutron group.
Nuclear Reactor Criticality Calculator
Computes the neutron multiplication factor k-effective for a nuclear reactor using the six-factor formula.
Nuclear Waste Activity Calculator
Estimates the remaining radioactive activity of nuclear waste after a given storage period from the initial activity and the half-life of its primary isotope.
Nuclear Binding Energy Calculator
Calculates an isotope's nuclear binding energy in MeV from its mass defect, and the binding energy per nucleon used to compare how tightly nuclei are bound.
Nuclear Fuel Cycle Calculator
Estimate uranium mass and separative work units (SWU) needed to fuel a nuclear power reactor over one cycle.
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 the radiation dose received from a point gamma source from its dose rate at 1 m, exposure time, distance and shielding.
Nuclear Fission Energy Calculator
Estimates the thermal energy released by nuclear fuel, either from its burnup or from complete fission of its U-235, Pu-239 or U-233 content.
Reactor Criticality Calculator
Compute the neutron multiplication factor k for a nuclear reactor using the six-factor formula.
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 an upper-bound decay heat of spent nuclear fuel from its burnup, cooling time (up to 15 years) and mass.
Nuclear Criticality Calculator
Compute the effective neutron multiplication factor (k_eff) for a fissile system 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.
Nuclear Reactor Power Calculator
Compute the net electrical output of a nuclear power plant from its thermal power rating, thermodynamic efficiency, and capacity factor.
Radiation Dose Conversion Calculator
Convert radiation dose measurements between rem, sievert, rad, and gray, with adjustment for radiation type weighting factor.
Neutron Flux Calculator
Calculate neutron flux Ο 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.
Gamma Ray Attenuation Calculator
Calculate the transmitted gamma-ray intensity through a shielding material of given thickness, accounting for buildup of scattered photons.
Nuclear Waste Dry Cask Storage Calculator
Estimates how many dry storage casks are needed for a number of spent fuel assemblies, given how many assemblies each cask holds.
Critical Mass Calculator
Estimate the mass of a uniform-density fissile sphere given its known critical radius and material density.
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.
Neutron Activation Analysis Calculator
Calculate the induced radioactivity (activation) of a target material irradiated by a neutron flux, accounting for saturation effects.
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.