Agent skill

Unit Conversion

Convert between Wei, Ether, Gwei, and other Ethereum denominations with Nethereum.

Install Unit Conversion

skills CLI

$ npx skills add Nethereum/Nethereum --skill unit-conversion -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum unit-conversion --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/nethereum-skills/skills/unit-conversion .claude/skills/unit-conversion && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "unit-conversion" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion into .claude/skills/unit-conversion/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-conversion", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Nethereum/Nethereum --skill unit-conversion -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum unit-conversion --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/nethereum-skills/skills/unit-conversion .agents/skills/unit-conversion && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "unit-conversion" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion into .agents/skills/unit-conversion/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-conversion", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Nethereum/Nethereum --skill unit-conversion -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum unit-conversion --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/nethereum-skills/skills/unit-conversion .cursor/skills/unit-conversion && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "unit-conversion" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion into .cursor/skills/unit-conversion/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-conversion", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Nethereum/Nethereum.git --path plugins/nethereum-skills/skills/unit-conversion

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Nethereum/Nethereum --skill unit-conversion -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum unit-conversion --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/nethereum-skills/skills/unit-conversion .gemini/skills/unit-conversion && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "unit-conversion" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion into .gemini/skills/unit-conversion/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-conversion", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Nethereum/Nethereum unit-conversion

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Nethereum/Nethereum --skill unit-conversion -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/nethereum-skills/skills/unit-conversion .github/skills/unit-conversion && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "unit-conversion" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion into .github/skills/unit-conversion/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-conversion", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Nethereum/Nethereum --skill unit-conversion -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum unit-conversion --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/nethereum-skills/skills/unit-conversion .opencode/skills/unit-conversion && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "unit-conversion" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/unit-conversion into .opencode/skills/unit-conversion/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unit-conversion", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: unit-conversion
GitHub stars: 2.3k
Token cost: ~759 tokens
SKILL.md length: 94 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Convert between Wei, Ether, Gwei, and other Ethereum denominations with Nethereum.

The user needs to convert ETH units
SKILL.md covers Wei to Ether and Back, Gwei Conversion, Other Denominations and Custom Decimals for ERC-20…, plus 2 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Handle token decimals

What it does

Unit Conversion is an agent skill from Nethereum/Nethereum. Convert between Wei, Ether, Gwei, and other Ethereum denominations with Nethereum. Use when the user needs to convert ETH units, handle token decimals, or work with BigDecimal precision for large values.

Its SKILL.md is about 760 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs. It works with Ethereum. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

The user needs to convert ETH units
Handle token decimals
Work with BigDecimal precision for large values

Example prompts

“/unit-conversion”

What it can do on your machine

Read from SKILL.md and the folder at commit 229f278. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Unit Conversion loads about 759 tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 94 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~55
When it runs · the whole SKILL.md, loaded when a task matches: ~759

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Nethereum/Nethereum at commit 229f278, republished under its MIT licence (© Nethereum). 94 words, ~759 tokens.

Download SKILL.mdSave it as .claude/skills/unit-conversion/SKILL.md (or your agent's skills folder).

name: unit-conversion
description: Convert between Wei, Ether, Gwei, and other Ethereum denominations with Nethereum. Use when the user needs to convert ETH units, handle token decimals, or work with BigDecimal precision for large values.
user-invocable: true

Unit Conversion

NuGet: Nethereum.Util (included in Nethereum.Web3)

Source: tests/Nethereum.ABI.UnitTests/UtilDocExampleTests.cs

Wei to Ether and Back

csharp

using System.Numerics;
using Nethereum.Util;

var convert = UnitConversion.Convert;

// Ether to Wei
var oneEtherInWei = convert.ToWei(1, UnitConversion.EthUnit.Ether);
// Result: 1000000000000000000

// Wei to Ether
var etherValue = convert.FromWei(BigInteger.Parse("1500000000000000000"));
// Result: 1.5m

Gwei Conversion

csharp

var convert = UnitConversion.Convert;

// Gwei to Wei (e.g., gas price)
var gweiInWei = convert.ToWei(21, UnitConversion.EthUnit.Gwei);
// Result: 21000000000

// Wei to Gwei
var gweiValue = convert.FromWei(BigInteger.Parse("21000000000"), UnitConversion.EthUnit.Gwei);
// Result: 21m

Other Denominations

csharp

var convert = UnitConversion.Convert;

var finneyInWei = convert.ToWei(1, UnitConversion.EthUnit.Finney);
// Result: 1000000000000000

var szaboInWei = convert.ToWei(1, UnitConversion.EthUnit.Szabo);
// Result: 1000000000000

var ketherInWei = convert.ToWei(1, UnitConversion.EthUnit.Kether);
// Result: 1000000000000000000000

Custom Decimals for ERC-20 Tokens

Use integer decimal places instead of EthUnit for tokens with non-18 decimals (e.g., USDC = 6, WBTC = 8).

csharp

var convert = UnitConversion.Convert;

// USDC (6 decimals): raw value to human-readable
var usdcValue = convert.FromWei(BigInteger.Parse("1000000"), 6);
// Result: 1m

// Human-readable to raw value
var usdcRaw = convert.ToWei(1m, 6);
// Result: 1000000

BigDecimal Precision

For very large values where decimal would lose precision, use FromWeiToBigDecimal.

csharp

var convert = UnitConversion.Convert;
var largeWei = BigInteger.Parse("123456789012345678901234567890");

var bigDecimal = convert.FromWeiToBigDecimal(largeWei, UnitConversion.EthUnit.Ether);

// Round-trip back to Wei without precision loss
var backToWei = convert.ToWei(bigDecimal, UnitConversion.EthUnit.Ether);
// backToWei == largeWei

Denomination Reference Table

Unit	EthUnit Enum	Wei
Wei	`EthUnit.Wei`	1
Gwei	`EthUnit.Gwei`	1,000,000,000
Szabo	`EthUnit.Szabo`	1,000,000,000,000
Finney	`EthUnit.Finney`	1,000,000,000,000,000
Ether	`EthUnit.Ether`	1,000,000,000,000,000,000
Kether	`EthUnit.Kether`	1,000,000,000,000,000,000,000

For custom token decimals, pass an int instead of EthUnit:

USDC/USDT: 6
WBTC: 8
DAI/ETH: 18

Files

Just SKILL.md in plugins/nethereum-skills/skills/unit-conversion of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Unit Conversion next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Unit Conversion compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Unit Conversion this skillNethereum/Nethereum	2.3k	—	~759	Automated safety check: Pass	MIT	4 days ago
Explorer Contract Verificationsablier-labs/evm-monorepo	353	—	~1.9k	Automated safety check: Pass	Custom licence	2 days ago
Developing Smart ContractsLFDT-Lineth/lineth-monorepo	126	—	~1.4k	Automated safety check: Pass	AGPL-3.0	today
Deposit QrSuperior-Trade/superior-skills	214	—	~1.1k	Automated safety check: Pass	MIT	29 days ago
Squash BugbotLFDT-Lineth/lineth-monorepo	126	—	~3.3k	Automated safety check: Pass	Apache-2.0	today
Ops Indexer Queryboundless-xyz/boundless	193	—	~3.5k	Automated safety check: Pass	Apache-2.0	1 mo ago

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Works with

Ethereum

Questions about Unit Conversion

What does Unit Conversion do?

Convert between Wei, Ether, Gwei, and other Ethereum denominations with Nethereum. Unit Conversion is an agent skill from Nethereum/Nethereum. Convert between Wei, Ether, Gwei, and other Ethereum denominations with Nethereum.

When should I use Unit Conversion?

Unit Conversion fits situations like: the user needs to convert ETH units; handle token decimals; work with BigDecimal precision for large values.

How do I install Unit Conversion in Claude Code?

Run `npx skills add Nethereum/Nethereum --skill unit-conversion -a claude-code`. Or copy the skill folder (plugins/nethereum-skills/skills/unit-conversion in Nethereum/Nethereum) into .claude/skills/unit-conversion in your project. Claude Code loads it when a task matches its description.

How do I install Unit Conversion in Codex?

Run `npx skills add Nethereum/Nethereum --skill unit-conversion -a codex`. Or copy the skill folder (plugins/nethereum-skills/skills/unit-conversion in Nethereum/Nethereum) into .agents/skills/unit-conversion in your project. Codex loads it when a task matches its description.

Can I use Unit Conversion in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Nethereum/Nethereum --skill unit-conversion -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/unit-conversion, .gemini/skills/unit-conversion, .github/skills/unit-conversion and .opencode/skills/unit-conversion in your project.

What does Unit Conversion need to run?

SKILL.md names no scripts, command-line tools or credentials: Unit Conversion is instructions for the agent only.

Does Unit Conversion access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Unit Conversion safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Unit Conversion use?

Unit Conversion is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Unit Conversion use?

About 759 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Unit Conversion?

Skills that share tags, products or a category with Unit Conversion: Explorer Contract Verification (sablier-labs/evm-monorepo, 353 stars), Developing Smart Contracts (LFDT-Lineth/lineth-monorepo, 126 stars), Deposit Qr (Superior-Trade/superior-skills, 214 stars) and Squash Bugbot (LFDT-Lineth/lineth-monorepo, 126 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Unit Conversion?

Nethereum (a GitHub organization) maintains it in Nethereum/Nethereum, which has 2,260 GitHub stars. The repository holds 71 skills in this directory. The repository was last updated on October 5, 2026.

Source: Nethereum/Nethereum on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Unit Conversion

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Unit Conversion

Wei to Ether and Back

Gwei Conversion

Other Denominations

Custom Decimals for ERC-20 Tokens

BigDecimal Precision

Denomination Reference Table

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Unit Conversion