Practical guide · 6 min read
Scientific Notation on a Calculator
Enter, compare, and interpret very large and very small numbers without exponent errors.
Scientific notation writes a number as a coefficient between 1 and 10 multiplied by a power of ten.
Use the exponent key
Enter 6.02 × 10²³ as 6.02e23. The exponent key is not the same as raising the preceding value to a power.
Handle negative exponents
The number 1.6 × 10⁻¹⁹ is entered as 1.6e-19; keep the exponent sign separate from subtraction.
Compare magnitudes
Compare exponents first. For equal exponents, compare coefficients.
Try the related calculator
Use the method above with an interactive tool that keeps the equation and units visible.
Open calculatorEditorial note
This guide is educational. Examples are deliberately compact and cannot cover every model, course convention, or laboratory condition. See our methodology for how formulas and examples are reviewed.