Exponential Growth Calculator

Exponential growth and decay — final value, doubling time, half-life, and continuous compounding.

Calculator Numbers & Math Updated Apr 20, 2026
How to Use
  1. Enter initial value, rate (negative for decay), and time.
  2. Pick discrete or continuous compounding.
Input
Presets
Result

Show Work

Enter values to see the step-by-step calculation.

Formulas

Discrete
A = P(1 + r)^t
Continuous
A = P · e^(rt)
Rule of 72
doubling time ≈ 72 / r% (good to ~15% growth)

About the Exponential Growth Calculator

The Exponential Growth Calculator gives you a fast, free answer for everyday maths and number work without sending anything off your device. Exponential growth and decay — final value, doubling time, half-life, and continuous compounding.

How it works

Enter your figures and the result appears instantly, updating the moment you change anything. There is no submit button and nothing to wait for, so it is easy to try a few what-if numbers and compare the results. Just check each box holds the kind of value it expects.

Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.

Frequently Asked Questions

How do I use the Exponential Growth Calculator?

Simply type your numbers and read the result, which refreshes the instant you change something. There is nothing to submit and nothing to wait for.

Does it cost anything or need an account?

No. The tool is completely free, there is no account to create, and it keeps working offline after the page first loads.

Is anything I type uploaded?

No. The tool works entirely on your device, so the values you enter never leave your browser.

Common Use Cases

Nothing to set up

Open the page and start. There is nothing to install, and no account to make.

Check your work

Worked it out yourself? Use the Exponential Growth Calculator to make sure your answer is right.

Learn while you do it

Seeing what you put in and what comes out helps you understand how they fit together.

Stays on your device

Your inputs never leave the browser — nothing is uploaded, logged, or stored anywhere.

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