Radioactive Half-Life Calculator
Calculate radioactive decay — find remaining amount at any time using N(t) = N₀ × (½)^(t/t½).
Carbon-14 — t½ = 5,730 years · Radiocarbon dating
Results
Remaining Amount8.8606e+2
Decayed Amount1.1394e+2
% Remaining88.61%
Half-Lives Elapsed0.17
Relative Activity88.6062%
89%
📊 Decay at Each Half-Life
| Half-Lives (n) | Time | Remaining | % |
|---|---|---|---|
| 0 | 0.000e+0 years | 1.000e+3 | 100.000% |
| 1 | 5.730e+3 years | 5.000e+2 | 50.000% |
| 2 | 1.146e+4 years | 2.500e+2 | 25.000% |
| 3 | 1.719e+4 years | 1.250e+2 | 12.500% |
| 4 | 2.292e+4 years | 6.250e+1 | 6.250% |
| 5 | 2.865e+4 years | 3.125e+1 | 3.125% |
| 6 | 3.438e+4 years | 1.563e+1 | 1.563% |
| 7 | 4.011e+4 years | 7.813e+0 | 0.781% |