Mathematiques
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Antilog Calculator.
Calculate an antilogarithm with an explicit base.
Saisissez vos valeurs
Les résultats se mettent à jour pendant la saisie.
Results update automatically as you type.
Use Cases
Solving exponential equations
When you have a logarithmic equation, use the antilog to find the original value. For example, if log_2(x) = 5, then x = 2^5 = 32.
Example: log_2(x) = 5 → x = 2^5 = 32
Scientific and engineering calculations
Antilogs are used in fields like acoustics (decibels), chemistry (pH), and earthquake magnitude (Richter scale) to convert logarithmic measurements back to linear values.
Example: pH = 7 → [H+] = 10^-7 M
Frequently Asked Questions
- What is an antilogarithm?
- An antilogarithm is the inverse operation of a logarithm. If log_b(x) = y, then the antilogarithm of y with base b is x = b^y. This calculator computes that value.
- How do I use this antilog calculator?
- Enter the exponent (the logarithm value) and the base. The calculator will compute the antilog by raising the base to the power of the exponent. For example, with exponent 3 and base 10, the result is 1000.
- Can the base be any number?
- Yes, you can enter any positive base. Common bases are 10, e (Euler's number), and 2. The calculator will compute the antilog for the base you provide.
Tips & Common Mistakes
Tips
- Ensure the base is a positive number (greater than 0) for valid results.
- The exponent can be negative, zero, or fractional; the calculator handles all real numbers.
- For base 10, the antilog is often called the 'inverse log' or '10^x' function.
- Double-check your inputs: a small change in exponent can lead to a large change in the result.
Common Mistakes to Avoid
- Using a negative base, which is not defined for real antilogs.
- Confusing the exponent and base fields – the exponent is the logarithm value, and the base is the logarithm's base.
- Forgetting that the antilog of 0 is always 1 (for any base), not 0.
Last updated: August 13, 2026