Large number
4,500,0004.5 x 10^6
Use this free scientific notation calculator to convert standard numbers into scientific notation or convert coefficient and exponent form back into standard form with steps.
Rewrite very large or very small numbers in scientific notation.
Convert a coefficient and power of 10 back into standard form.
Check science, chemistry, physics, astronomy, and math notation examples.
Compare coefficient, exponent, and standard-form output in one place.
4.5 x 10^6
4.2 x 10^-4
602,000,000,000,000,000,000,000
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Quick answers about powers of 10, coefficients, exponents, standard form, and privacy.
Scientific notation writes a number as a coefficient times a power of 10. Normalized scientific notation uses one nonzero digit to the left of the decimal point.
Choose To scientific, enter the standard number, and calculate. The calculator moves the decimal point and counts those moves as the exponent.
The main inputs are the numbers, operation, mode, or known values the calculator needs. Keep units consistent, enter percentages the way the page label shows, and use the examples as a quick check before trusting the answer.
Read the headline answer, then check the supporting lines and examples to understand how the calculator got there. If one input changes, rerun the tool and compare the new answer instead of guessing.
Check units, signs, rounding, and the selected mode before copying the answer. If the number feels weird, rerun one of the examples first, then put your own values back in slowly.
Choose To standard, enter the coefficient and whole-number exponent, and calculate. Positive exponents move the decimal right; negative exponents move it left.
Yes. A negative number keeps a negative coefficient, such as -3.2 x 10^5.
Scientific notation is best for compact display and powers of 10. The Big Number Calculator is best for exact whole-number arithmetic with very large integers.
Yes. Recent notation conversions stay only in the current browser tab while you use the page. They are not sent to a server.