Generation Time Calculator

Calculate bacterial growth and doubling time

Calculate:

Initial Population (N0)

Final Population (Nt)

Time Elapsed (t)

Generation Time

1.0000

hours

Generations (n)

3.00

Growth Rate (k)

0.6931

Doubling Time

1.00 hours

Formulas

Generations: n = log2(Nt/N0) = (log Nt - log N0) / log 2

Generation Time: g = t / n

Final Population: Nt = N0 x 2^(t/g)

Initial Population: N0 = Nt / 2^(t/g)

Generation Time Facts

🦠E. coli doubles every 20 minutes under optimal conditions

🧬Mycobacterium tuberculosis has a 15-24 hour generation time - very slow

🍄Yeast doubles every 90-120 minutes in nutrient-rich medium

🔬Mammalian cells in culture typically divide every 24-48 hours

🧫Log phase is when bacteria grow exponentially - generation time is constant

📈Knowing generation time helps predict culture density at any time point

🦋Human generation time (average parent age) is about 25-30 years

⏰Cancer cells often have shorter generation times than normal cells