By Zencalcy Editorial TeamLast reviewed About us
Undo a logarithm by exponentiation: if y = log_b(x), then x = bʸ. Choose e, 10, or a custom base and enter the log value to recover the original number.
Antilog: raise e, 10, or any base to your power.
x = bʸ
| Symbol | Meaning |
|---|---|
| y | Logarithm value (the exponent) |
| b | Base: e, 10, or custom (positive, ≠ 1) |
antilog₁₀(3) = 10³ = 1000. Natural antilog of 1 is e ≈ 2.718282.
Continue with the Percentage Calculator, all math calculators, or browse the full calculator directory.
The inverse of a logarithm: it raises the base to the given power to recover the original number.
Click to use the Absolute Value Calculator and get instant results.
Click to use the Basic Calculator and get instant results.
Click to use the Scientific Calculator and get instant results.
Click to use the Exponent Calculator and get instant results.
Click to use the Square Root Calculator and get instant results.
Click to use the Cube Root Calculator and get instant results.
Content updated: September 2026