Time Converter is a free, open-source web tool designed to make time unit conversions instant, accurate, and effortless. Whether you're a developer setting API timeouts, a project manager calculating sprint durations, or a student learning about time measurements, our tool provides the precision and convenience you need.
We believe that tools should be simple, accessible, and focused on solving real problems. Time conversion is a common task that often requires mental math, calculator usage, or searching for conversion formulas. Our mission is to eliminate these friction points by providing an intuitive, always-available tool that works instantly in your browser.
As developers and technical professionals, we found ourselves constantly converting between time units—whether calculating milliseconds for setTimeout functions, converting hours to seconds for API rate limits, or translating project estimates between days and hours. Existing solutions were either cluttered with ads, required downloads, or lacked the precision needed for professional work.
We created Time Converter to be:
Enter a value in any field and watch all other units update instantly. No need to click "Convert" buttons or wait for calculations.
Convert between weeks, days, hours, minutes, seconds, and milliseconds—all the units you need for most applications.
Quickly copy any converted value with a single click, perfect for pasting into code, documents, or spreadsheets.
Use Escape to clear all values and Ctrl/Cmd+/ to focus the first input for faster workflow.
Works seamlessly on desktop, tablet, and mobile devices with an optimized touch-friendly interface.
Automatically adapts to your system's color scheme preference for comfortable viewing in any lighting.
Our tool serves a diverse community of users across various fields:
Convert milliseconds to seconds for JavaScript timeouts, calculate API rate limit windows, optimize database query intervals, and debug timing-related issues in applications.
Translate sprint durations from weeks to hours, calculate resource allocation in person-hours, estimate project timelines, and convert client estimates between different time scales.
Normalize timestamp data across different units, calculate average session durations, aggregate metrics over various time periods, and convert time-series data for analysis.
Learn about time unit relationships, verify homework calculations, understand real-world time conversion applications, and teach measurement concepts with interactive examples.
Calculate sensor polling intervals, optimize device sleep cycles for battery life, schedule data transmission windows, and convert between milliseconds for embedded systems.
Time Converter is built with modern web technologies to ensure speed, reliability, and accessibility:
Your privacy is paramount. Time Converter:
We take accuracy seriously. Our conversion algorithms use standard time unit relationships defined by the International System of Units (SI):
Calculations maintain up to 6 decimal places of precision, which is more than sufficient for virtually all professional and scientific applications. For extremely small values, the tool uses scientific notation to prevent display errors.
We're committed to continuously improving Time Converter. Planned enhancements include:
Start converting between time units instantly with our free tool.
Use Time ConverterWe value your feedback and suggestions. While Time Converter is designed to be simple and focused, we're always interested in learning how we can better serve our users. If you have ideas for improvements, encounter any issues, or just want to share how you're using the tool, we'd love to hear from you.
Time Converter is built with transparency in mind. We believe in the power of open collaboration and may release the source code for community contributions in the future. This ensures the tool remains free, trustworthy, and continuously improved by developers worldwide.