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Scientific Notation Converter
Convert a number to scientific and engineering notation, and convert values between SI unit prefixes.
- Enter a number to see it in scientific/engineering form
- Or use the prefix converter below
Runs entirely in your browser.
Scientific & Engineering Notation
Standard
602,200,000,000,000,000,000,000
Scientific notation
6.022 × 10²³
Engineering notation (exponent ÷ 3)
602.2 × 10²¹
SI Unit Prefix Converter
1 k = 1,000,000 m
Runs entirely in your browser.
Frequently asked questions
- Scientific notation writes a number as a value between 1 and 10 times a power of ten (e.g. 4.2 × 10⁵). Engineering notation restricts the exponent to multiples of 3 (e.g. 420 × 10³), which lines up with SI prefixes like kilo and mega.
- The full standard range, from atto and nano up through kilo, mega, giga and beyond, so you can convert a value like 1500 milliseconds directly into seconds or microseconds.
- Yes — that’s the point of scientific notation, and the converter handles both extremes without losing precision in the display.
- No. All conversions run entirely in your browser — nothing you type is uploaded or stored.
- No. It runs entirely in your browser — no software install, no account, no email required.
What is the difference between scientific and engineering notation?
What SI prefixes does the prefix converter support?
Does it handle very large or very small numbers?
Is any of my input sent to a server?
Do I need to install anything or sign up?
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