How to Find the Antilog on a Calculator

If your calculator has a log button, it calculates antilog too.

The antilogarithm function is the inverse of the logarithm function. For instance, the logarithm of 100,000 to the base of 10 is 5, and the antilogarithm of 5 to the base of 10 is 100,000. These functions work on fractions as well. The logarithm of 25,000 is 4.398, and the antilogarithm of 4.398 is 25,000. Scientific calculators vary as to which symbols they display to represent the antilogarithm. The function and the logarithm button usually share a button.

Instructions

1. Enter the number whose antilogarithm you want to find.

2. Locate the calculator's antilog button. It may be marked as "alog," "log-1" or "10^x." It will either have its own button or will be the logarithm button's secondary function.

3. Press your calculator's "shift," "2nd" or "Function" key if the antilogarithm is the log button's secondary function.

4. Press the antilog key.

References

• University of Washington: Find the Antilog Function on Your Calculator
• Community College of Baltimore County: Use of the Scientific Calculator

Resources

• Web 2.0 Calculator