Radioactive Decay & Isotope Half-Life Physics Calculator
Calculate remaining isotope substance N(t), percentage decayed, elapsed half-life cycles, and activity decay for Carbon-14 dating and nuclear medicine pharmacology.
Calculator Inputs
Live Real-TimeRemaining Radioisotope Quantity N(t)
Remaining Percentage (%)
13%
Decayed / Disintegrated Mass
87 grams
Elapsed Half-Life Cycles
3 cycles
Exponential Half-Life: Substance mass halves precisely with each completed cycle.
Decay Substance Balance
Detailed Calculation Breakdown
Calculation Methodology
Decay Law: N(t) = N0 * (1/2)^(t / T_half). Decayed Mass = N0 - N(t). Half-life cycles = t / T_half.
Important Legal & Educational Disclaimer
This nuclear physics tool models continuous exponential isotope decay.
This calculator is designed for educational and informational purposes only based on public statutory frameworks. The outputs do not constitute binding financial, tax, or legal advice. We assume no liability for decisions made based on these estimations. Always verify with the relevant official authorities or a certified professional advisor.
Frequently Asked Questions
Related Calculators
Recommended tools and calculators tailored to your current calculation
Ideal Gas Law Physics Calculator (PV = nRT Equation of State)
Calculate pressure (P), volume (V), absolute temperature (T in Kelvin), and moles (n) for thermodynamic and chemical engineering systems.
Boyle's Law Physics Calculator (Gas Pressure & Volume P1V1 = P2V2)
Calculate final compressed or expanded gas volume (V2) and pressure (P2) at constant temperature under Boyle's Law isothermal gas dynamics.
Specific Heat Capacity & Thermal Heat Transfer Physics Calculator (Q = mcΔT)
Calculate thermal energy absorbed or released in Joules, Kilocalories, and Watt-hours (Q), specific heat capacity c, and temperature delta ΔT across matter.
Barometric Atmospheric Pressure, Air Density & Altitude Physics Calculator
Calculate standard atmospheric barometric pressure in hPa/mbar, air density (kg/m³), pressure percentage, and water boiling point temperature across any elevation above sea level.
Temperature Multi-Scale Converter (Celsius, Fahrenheit, Kelvin, Rankine)
Instantly convert temperature values across thermodynamic and meteorological scales: Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R).
Mass & Weight Multi-Unit Converter (Kilograms, Pounds, Ounces, Grams, Troy Ounces)
Convert seamlessly across metric and imperial weight measurements: Kilograms (kg), Pounds (lb), Ounces (oz), Grams (g), Metric Tons (t), Stone (st), and Precious Metal Troy Ounces (oz t).
Camera Depth of Field (DoF) & Hyperfocal Distance Optics Calculator
Calculate shallow and deep depth of field (DoF in cm), near and far focus limits, and hyperfocal distance across Full Frame, APS-C, and Micro Four Thirds sensors.
Aerodynamic Mach Number & Speed of Sound by Altitude Calculator
Calculate flight Mach number (M = TAS / a), speed of sound in km/h, knots, and m/s across international standard atmosphere (ISA) altitudes, and determine flight aerodynamic regimes.