Time & Date
Time and date conversion tools. 3 free tools available.
Free Online Time Zone and Date Calculation Tools
Time is the most universal measurement, yet managing it across different time zones, calendar systems and date formats remains one of the most common sources of confusion in both personal and professional contexts. Remote teams schedule meetings across continents. Developers work with Unix timestamps in databases and APIs. Project managers calculate delivery dates based on working days, excluding weekends and holidays.
Our time and date tools collection provides precise, instant solutions for the most common time-related tasks. Convert between time zones without mental math, translate Unix timestamps to human-readable dates and calculate the exact number of working days between any two dates. Every tool runs in your browser using your system's timezone data for maximum accuracy.
Need to convert time between different time zones?
Open Timezone Converter →Time Zone Converter
With businesses operating globally, time zone conversion is a daily necessity. Scheduling a meeting with colleagues in New York, London and Tokyo requires knowing the exact time in each location, accounting for daylight saving time changes that differ by country and date.
Our Time Zone Converter lets you:
- Select any two time zones from a comprehensive list covering every region worldwide.
- Enter a specific date and time and see the equivalent in the target time zone instantly.
- Account for daylight saving time transitions automatically using your browser's built-in timezone database.
- View the UTC offset for both time zones to understand the difference at a glance.
- Convert the current time between zones or specify any past or future date and time.
Common Time Zone Conversions
The most frequently converted time zone pairs include EST to PST for US coast-to-coast business, EST to GMT for US-UK collaboration, PST to IST for US-India tech teams, CET to EST for Europe-US operations and JST to PST for Japan-US coordination. Our converter handles all of these and hundreds more timezone combinations with full daylight saving time awareness.
Unix Timestamp Converter
Unix timestamps, also known as epoch time, represent the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC. This format is used extensively in programming, databases, APIs, log files and system administration. While machines work efficiently with timestamps, humans need readable dates.
Our Unix Timestamp Converter handles bidirectional conversion:
- Timestamp to date – Enter a Unix timestamp and see the equivalent date and time in your local timezone and UTC. Supports both seconds and milliseconds precision.
- Date to timestamp – Select a date and time and get the corresponding Unix timestamp in seconds and milliseconds.
- Current timestamp – View the current Unix timestamp updating in real time. Useful for quick reference when debugging or logging.
- Multiple formats – See the converted date in ISO 8601, RFC 2822, relative time and custom format strings.
The converter is essential for developers working with API responses, database records, JWT token expiration times, cookie timestamps and system log files that use epoch time.
Working with epoch timestamps in your code? Convert them instantly.
Open Unix Timestamp Converter →Working Days Calculator
Calculating the number of business days between two dates is required for project planning, contract deadlines, delivery estimates, legal timeframes and HR processes like notice periods. Simply counting calendar days gives an inaccurate result because it includes weekends and potentially public holidays.
Our Working Days Calculator provides accurate business day calculations:
- Business days between dates – Enter a start and end date to get the exact count of working days, excluding Saturdays and Sundays.
- Add working days – Start from a date and add a specific number of working days to find the target date. Essential for calculating deadlines like "10 business days from today".
- Holiday exclusion – Optionally exclude public holidays from the count for even more accurate results.
- Calendar visualization – See the date range on a calendar with working days highlighted and weekends marked.
Why Time Tools Matter in a Global World
Global Scheduling
Convert time across any time zone for meetings, calls and deadlines with remote teams worldwide.
Developer Essential
Convert Unix timestamps for API debugging, database queries, log analysis and JWT token inspection.
Project Planning
Calculate business days for accurate project timelines, delivery estimates and contractual deadlines.
Real-Time Updates
Live clocks and instant conversions. No need to submit forms or wait for results.
DST Aware
Automatic daylight saving time handling using your browser's timezone database for accurate conversions year-round.
Privacy First
All calculations run locally in your browser. No data is sent to any server.
Understanding Time Formats
Working with time involves several standard formats. Here is a quick reference guide:
- Unix Timestamp – Seconds since Jan 1, 1970 UTC. Example:
1700000000= November 14, 2023. Used in programming and databases. - ISO 8601 – The international standard format:
2023-11-14T22:13:20Z. The "Z" indicates UTC. Used in APIs and data interchange. - RFC 2822 – Email date format:
Tue, 14 Nov 2023 22:13:20 +0000. Found in email headers and HTTP headers. - UTC (Coordinated Universal Time) – The global time standard. All time zones are expressed as offsets from UTC (e.g., EST = UTC-5, IST = UTC+5:30).
- Epoch – Another name for Unix timestamp, referring to the Unix epoch starting point of January 1, 1970.
Frequently Asked Time & Date Questions
Yes. The Time Zone Converter uses your browser's built-in Intl API and timezone database, which includes all historical and current daylight saving time rules for every time zone. When you convert a date that falls during a DST transition period, the converter automatically applies the correct offset.
A Unix timestamp is the number of seconds elapsed since January 1, 1970 at 00:00:00 UTC (known as the Unix epoch). Developers use timestamps because they are timezone-independent, easily comparable (a larger number means a later time), compact for database storage and simple to perform arithmetic on (adding 86400 equals adding one day). Our Unix Timestamp Converter translates between this machine format and human-readable dates.
Working days (also called business days) exclude Saturdays and Sundays from the count. For example, if today is Monday and a deadline is "5 working days away", the deadline falls on the following Monday, not Saturday. Our Working Days Calculator can also exclude public holidays for even more precise calculations.
Yes. The Unix Timestamp Converter automatically detects whether your input is in seconds (10 digits) or milliseconds (13 digits) and converts accordingly. JavaScript's Date.now() returns milliseconds, while many server-side languages use seconds. The tool handles both seamlessly.
The Time Zone Converter supports all IANA time zones, which includes over 400 entries covering every country and territory in the world. This includes both standard names (America/New_York, Europe/London, Asia/Tokyo) and common abbreviations (EST, GMT, IST, PST, CET, JST).
Whether you are coordinating global meetings, debugging API timestamps or planning project deadlines, our time and date tools give you precise answers in seconds. Bookmark this page for instant access whenever time calculations come up in your work.