Free Online Converter Tools — Instant, No Account
Convert units, numbers, timestamps, URLs, and encodings right in your browser. Results update as you type; tool code does not submit what you enter to a TOOLGRID processing endpoint.
浏览器本地处理不上传工具输入至 TOOLGRID无需账号
浏览工具常用任务
从常用任务开始，再浏览同组的其他工具。
Unit Converter→
Convert values between common length units.
时间戳转换器→
在 Unix 时间戳、UTC 时间和本地时间之间快速转换。
URL 编码解码→
把文本转换为 URL percent encoding，或把编码内容还原为可读文本。
JSON ↔ YAML Converter→
Convert between JSON and YAML using the standard js-yaml library — both directions, configurable indent, safe-by-default.
更多工具
11 个工具
CSV JSON 转换器
在 CSV 和 JSON 数组之间双向转换，适合数据整理和接口调试。
JSON to TypeScript Types
Generate TypeScript interfaces from a JSON sample — nested types, arrays, optional keys inferred.
Base Converter
Convert signed integers between bases 2, 8, 10, 16, 32, and 36 without precision loss.
Base64 编码解码
在普通文本和 Base64 字符串之间双向转换。
Query String Builder
Compose URL query strings from key-value rows — repeated keys for arrays, automatic percent-encoding, live preview.
URL 解析器
解析 URL 的协议、主机、路径、哈希和查询参数，并支持参数解码。
JWT 解码器
解码 JWT 的 header 和 payload，查看声明、过期时间和签名结构。
开始前需要了解
- Results as You Type
No submit button needed. Conversions update instantly so you can see the output while you work.
- Browser-Local Processing
Conversions run in your browser. Tool code does not submit entered text, files, or values to a TOOLGRID processing endpoint.
- No Account Gate
The current converters open without an account. Practical limits still depend on the browser, device, and input size.
- No Account Required
Open any tool and start converting immediately. No email or registration is required.
常见问题
Do I need to create an account to use these converters?
No account is required. Every tool on ToolGrid is accessible immediately without registration or login.
Are my inputs sent to a server?
Tool code processes conversions in your browser and does not submit what you type or paste to a TOOLGRID processing endpoint.
How accurate are the unit conversions?
Unit conversions use IEEE 754 double-precision arithmetic, which is accurate to 15–17 significant digits — sufficient for all practical engineering and everyday use.
What is Base64 encoding used for?
Base64 encodes binary data as printable ASCII characters. It is commonly used in email attachments, embedding images in CSS or HTML, and encoding API tokens and configuration values.
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) elapsed since 00:00:00 UTC on 1 January 1970. It is the standard time format used in databases, APIs, and log files.
Can I use these tools offline?
Processing happens locally after the necessary page assets load, but TOOLGRID does not promise every converter is offline-ready. Only tools explicitly marked offline-ready make that claim.