Free Date & Time
Timestamp, formatting, and duration tools. All processing occurs directly in your web browser using HTML5 Canvas, WebAssembly, and modern Web Workers. No files are uploaded to external servers.
Available Date & Time
Direct in-browser utilities
Unix Timestamp Converter
Convert Unix Timestamps to Human-Readable Dates
Time Difference Calculator
Calculate duration between two dates
Time Zone Converter
Convert time across multiple time zones
Date Format Converter
Parse and format dates into standard strings
Week Number Calculator
Find ISO week number for any date
Age Calculator
Calculate exact age & next birthday
Business Days Calculator
Calculate working days between dates
Why Use Client-Side Date & Time?
Most online conversion and manipulation websites upload your sensitive files directly to remote cloud servers. This exposes confidential company documents, legal contracts, medical forms, and private photos to third-party data breaches, surveillance, and corporate storage policies.
100% Data Confidentiality
Your files remain inside your computer's RAM. They never transit across an external API, preventing any chance of interception or unauthorized storage.
Zero Bandwidth & Queue Delays
Without upload or download wait times, large files process at native memory speed using multi-threaded Web Workers.
Unlimited & No Paywalls
No subscription tiers, daily file limits, watermarks, or forced registrations. Complete freedom for professionals, students, and businesses.
Date & Time FAQs
Answers to common questions regarding local browser processing, quality, and security.
Does the Unix timestamp converter support millisecond and microsecond timestamps?
Yes. It automatically detects and converts standard 10-digit second timestamps and 13-digit millisecond timestamps across all global timezones.
How are business days and time differences calculated?
Calculations run accurately in your browser taking into account leap years, timezone offsets, and custom weekend configurations.