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SaveTime Tools

Free online developer tools that help you work faster. Format JSON, convert JSON to C# classes, generate UUIDs and more.

Popular Developer Tools

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JSON Formatter

Format and beautify JSON instantly.

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Base64 Encoder

Encode and decode Base64 strings quickly.

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UUID Generator

Generate unique UUID identifiers instantly.

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AI Token Calculator

Estimate tokens and API costs for AI models.

All Developer Tools

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JSON to C# Generator

Convert JSON into C# classes automatically.

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Regex Tester

Test and debug regular expressions instantly.

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Regex Builder

Generate regex patterns for emails, URLs and numbers.

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Password Generator

Generate strong and secure passwords instantly.

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QR Generator

Generate QR codes for URLs and text.

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Prompt Cost Calculator

Estimate AI prompt cost for GPT, Claude and Gemini models.

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Context Window Calculator

Check prompt and response token limits for AI models.

Free Online Developer Tools

SaveTime Tools provides free online utilities for developers and creators. These tools help you format JSON, convert JSON data to C# classes, test regular expressions, encode Base64 strings, generate UUID identifiers and calculate AI tokens quickly.

Tools That Help Developers Save Time

Modern development often requires quick utilities to format data, debug text patterns or generate identifiers. SaveTime Tools provides a collection of lightweight tools that run directly in your browser.

Our tools include JSON formatters, regex testers, UUID generators, Base64 encoders and AI token calculators. They are designed to help developers work faster without installing additional software.

AI Developer Tools

The platform also includes AI related tools such as token calculators, prompt cost estimators and context window calculators for models like GPT, Claude and Gemini.