How to Use a Calculator for Exponents
Enter any base and exponent to get the value and a typical key sequence. Then match the power key name used by your scientific, phone, or graphing calculator.
Written and checked by TheToolNet Editorial Team · Last reviewed: September 19, 2026
Exponent key-sequence helper
Scientific calculator steps
- Type the base, such as 5.
- Press xʸ, yˣ, ^, or the calculator's power template.
- Type the exponent, such as 3.
- Close a template or parentheses if the display requires it, then press equals.
For 5³, the result is 125. The repeated-multiplication check is 5 × 5 × 5 = 125.
Negative and fractional exponents
For 2⁻³, type the exponent using the dedicated negative key when available, not the subtraction operator. The result is 0.125. For 161/2, enter the exponent as (1 ÷ 2) or use the square-root key; the result is 4.
How to do exponents on an iPhone calculator
Rotate the iPhone to landscape with orientation lock off to reveal scientific functions. Depending on the iOS version, use the power control shown in the scientific layout. Parenthesize negative or fractional exponents and verify with a familiar example before entering a longer expression.
Frequently asked questions
Is x² the same as the power key?
x² is a shortcut only for squaring. The general xʸ or ^ key accepts any exponent.
Why did my negative exponent produce an error?
The calculator may distinguish the unary negative key from subtraction, or may require parentheses around the exponent.
Can I simplify variables here?
Use the simplify exponents calculator for symbolic exponent rules.