Wei to Ether Converter

How it is calculated

The tool multiplies the wei amount by fixed powers of ten: ether = wei × 10−18 and gwei = wei × 10−9. Both results are printed in scientific notation with four digits after the decimal point, for example 2.1000e-5 meaning 2.1000 × 10⁻⁵, followed by the unit name. The notation is always used, even for ordinary amounts such as 1.5 ether, which appears as 1.5000e+0. Only the first five significant digits are shown, so very long wei values lose their last digits in the display. Negative numbers are accepted and keep their sign, and the tool does not check that the input is a whole number, although real wei amounts always are.

Common mistakes

• Misreading the exponent. 2.1000e-5 is 0.000021, not 2.1; the minus sign after the e moves the decimal point five places left.
• Typing the amount with commas or spaces, such as 21,000,000,000,000. Enter digits only, or use a form like 2.1e13.
• Confusing gwei with ether when quoting a gas price. A gas price of 20 gwei is 0.00000002 ether per unit of gas, not 20 ETH.
• Expecting every digit of a large wei balance to appear. Only five significant digits are displayed, so the result is for reading, not for exact accounting.
• Using this tool for the other direction. It converts from wei only; to go from ether to wei multiply by 10¹⁸ yourself.