How to convert ETH to wei
Multiply the amount in ETH by 1018 (move the decimal point 18 places right).
1 ETH = 1,000,000,000,000,000,000 wei
Wei is the smallest unit of ether. Every ERC-20 amount on-chain is an integer of base units like this.
ETH to wei table
| ETH | wei |
|---|---|
| 0.000001 ETH | 1,000,000,000,000 wei |
| 0.0001 ETH | 100,000,000,000,000 wei |
| 0.001 ETH | 1,000,000,000,000,000 wei |
| 0.01 ETH | 10,000,000,000,000,000 wei |
| 0.05 ETH | 50,000,000,000,000,000 wei |
| 0.1 ETH | 100,000,000,000,000,000 wei |
| 0.5 ETH | 500,000,000,000,000,000 wei |
| 1 ETH | 1,000,000,000,000,000,000 wei |
| 2 ETH | 2,000,000,000,000,000,000 wei |
| 5 ETH | 5,000,000,000,000,000,000 wei |
| 10 ETH | 10,000,000,000,000,000,000 wei |
| 100 ETH | 100,000,000,000,000,000,000 wei |
Questions and answers
How many wei are in 1 ETH?
1 ETH = 1,000,000,000,000,000,000 wei (10¹⁸).
How do I convert ETH to wei?
Multiply by 10^18, i.e. move the decimal point 18 places to the right.
Is the conversion exact?
Yes. ConvertEasy moves the decimal point on the digits as text instead of using floating point numbers, so even 18-decimal amounts stay exact to the last digit.
What should I know about ETH decimals?
Wei is the smallest unit of ether. Every ERC-20 amount on-chain is an integer of base units like this.