Math

Doubling Time Calculator

Time for a quantity to double at a constant percent growth rate.

Doubling time

periods

This free Doubling Time Calculator covers Time for a quantity to double at a constant percent growth rate.

Constant growth doubles in ln(2) divided by ln(1 + r). Other math tools are linked below.

Doubling Time Calculator — how it works

Time for a quantity to double at a constant percent growth rate. Typical inputs are Growth rate (%). How it works beside the form states the identity the Doubling Time Calculator applies.

FAQ

How do I use the Doubling Time Calculator?

Open the Doubling Time Calculator, fill Growth rate (%), and read the result. Constant growth doubles in ln(2) divided by ln(1 + r).

What formula does the Doubling Time Calculator use?

The Doubling Time Calculator uses the identity in How it works. In words: Constant growth doubles in ln(2) divided by ln(1 + r).

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