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Bacterial growth

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Formula

N = N₀·2^(t/tₐ)

Worked example

Given: Initial count = 1,000; Time = 6 h; Doubling time = 20 min

Result: Final count = 262,144,000

How it is calculated

1. Enter the values you know. 2. The calculator converts them to base units and applies the formula. 3. The result is shown in the unit you choose.

Frequently asked questions

How do I calculate it?

Formula: N = N₀·2^(t/tₐ). Given: Initial count = 1,000; Time = 6 h; Doubling time = 20 min. Result: Final count = 262,144,000.

Is the calculator free and private?

Yes. It is free, needs no sign-up and runs in your browser — the numbers you type stay on your device.

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Updated November 9, 2026