Antilog Calculator
Inverse logarithm for any base.
Enter your values
Enter the logarithm value you are working with.
Choose one of: Base 10, Base e (natural), Base 2.
Enter the custom base (optional) you are working with.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Antilog
- 501.187234
- Base used
- 10
- Check: log of result
- 2.7
- Scientific notation
- 5.0119e+2
Quick answer
The antilog is the inverse of a logarithm: antilog_b(x) = b^x.
antilog_b(x) = b^x
At a glance
| What it does | Inverse logarithm for any base. |
|---|---|
| Category | Math |
| Inputs needed | Logarithm value, Base, Custom base (optional) |
| Formula | antilog_b(x) = b^x |
| Cost | Free — no sign-up, no download |
How to use the Antilog Calculator
- 1Enter the logarithm value you want to reverse.
- 2Choose the base of the original logarithm.
- 3Use the custom field for unusual bases.
Inputs explained
- Logarithm value
- Enter the logarithm value you are working with.
- Base
- Choose one of: Base 10, Base e (natural), Base 2.
- Custom base (optional)
- Enter the custom base (optional) you are working with.
Frequently asked questions
What is antilog of 3 base 10?
1000, because 10³ = 1000.
Is antilog the same as exp?
Only for base e — exp(x) is antilog base e.
What do I need to enter into the Antilog Calculator?
Just 3 values: logarithm value, base, custom base (optional). Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Antilog Calculator work out the answer?
The antilog is the inverse of a logarithm: antilog_b(x) = b^x. It applies the formula antilog_b(x) = b^x and shows the working so you can check each step by hand.
Is the Antilog Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.