What this skill does
Accurate mathematical calculations. Use when user needs to compute: (1) Basic arithmetic (+, -, *, /), (2) Powers and roots (^, sqrt), (3) Percentages.
Calculator is part of the Other Skills category — OpenClaw skills that extend your agent with new capabilities. You can install it on its own or alongside other other skills skills from the OpenClaw catalog.
How to install Calculator
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
calculatorand click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add Calculator with a single command:
openclaw skills add calculator
This pulls calculator from ClawHub and installs it into ~/.openclaw/skills/calculator/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use Calculator
Once installed, Calculator activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
calculator-1.0.1.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/calculator/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install Calculator?
Install Calculator in the OpenClaw Easy desktop app by opening the Skills panel, searching for calculator, and clicking Install. From a terminal you can run: openclaw skills add calculator. Either way the skill is placed in ~/.openclaw/skills/calculator/.
Is Calculator free?
Yes. Calculator is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does Calculator do?
Accurate mathematical calculations. Use when user needs to compute: (1) Basic arithmetic (+, -, *, /), (2) Powers and roots (^, sqrt), (3) Percentages.
Related: more other skills skills
If Calculator looks useful, you may also want to check out other other skills skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models