Doubling time vs half life Graphs comparing doubling times and half lives of exponential growths (bold lines) and decay (faint lines), and 70/t and 72/t approximations by CMG Lee. Hover over a graph to highlight it and its complement. r=+100% r=+50% r=+30% r=+20% r=+15% r=+12% r=+10% r=+9% r=+8% r=+7% r=+6% r=+5% r=+4% r=+3% r=-3% r=+2% r=-2% r=+1.5% r=-1.5% r=+1.2% r=+1% r=-1% 0 0.5 1 1.5 2 N__N0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 t 70/r 72/r