3 free browser-based date and time calculators — calculate exact date differences, convert Unix timestamps, and compute your precise age. All calculations run locally in your browser with no server required.
Calculate the exact gap between any two dates in years, months, weeks, and days. Handles leap years and varying month lengths automatically. Useful for calculating project durations, contract periods, age verification, and countdown timers. Works entirely in your browser — no data is sent anywhere.
Convert between Unix timestamps (epoch time) and human-readable dates instantly. Supports both seconds (10-digit) and milliseconds (13-digit) timestamps. Shows results in UTC and your local timezone. Includes ready-to-use code snippets for JavaScript, Python, PHP, and more — essential for backend developers debugging logs and API responses.
Calculate your exact age from date of birth in years, months, days, hours, and minutes. Also shows the day of the week you were born and how many days remain until your next birthday. Accurate to the second and fully accounts for leap years.
Common Unix timestamp formats across programming languages:
| Language | Get Current Timestamp | Unit |
|---|---|---|
| JavaScript | Date.now() | Milliseconds |
| Python | import time; time.time() | Seconds (float) |
| PHP | time() | Seconds |
| Java | System.currentTimeMillis() | Milliseconds |
| Go | time.Now().Unix() | Seconds |
| MySQL | UNIX_TIMESTAMP() | Seconds |
Use the Date Difference Calculator — pick a start date and end date and the tool returns the exact gap in years, months, weeks, and days. It accounts for leap years and varying month lengths so the result is always accurate.
A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since 1 January 1970 00:00:00 UTC. It is a universal way for computers to represent a specific point in time. The Unix Timestamp Converter tool converts between Unix timestamps and human-readable dates in any timezone.
Paste the Unix timestamp (10-digit for seconds, 13-digit for milliseconds) into the Unix Timestamp Converter and the tool instantly shows the equivalent date and time in UTC and your local timezone. You can also convert in reverse — pick a date and time to get the Unix timestamp.
The Age Calculator is accurate to the day. Enter your date of birth and it shows your exact age in years, months, days, hours, and minutes. It also shows your next birthday and how many days remain until it.
Yes. The Date Difference Calculator works for both past and future dates. Set the start date to today and the end date to any future date to get the exact number of days, weeks, and months remaining.
Yes. The Unix Timestamp Converter automatically detects whether the value is in seconds (10 digits) or milliseconds (13 digits) and converts accordingly. This is useful when working with JavaScript timestamps, database logs, or API responses.
Almost all languages use Unix timestamps internally. JavaScript uses milliseconds (Date.now()), Python uses seconds (time.time()), PHP uses seconds (time()), MySQL stores DATETIME as timestamps, and most REST APIs return ISO 8601 or Unix epoch values. The Unix Timestamp Converter shows ready-to-use code snippets for each language.
A leap year adds one extra day (29 February) to the calendar. The Date Difference Calculator fully accounts for leap years, so if your date range spans February in a leap year, the extra day is correctly included in the total count.
Yes. The Date Difference Calculator is useful for working out sprint durations, project deadlines, and contract end dates. Enter the project start and end dates to instantly see the total working period in days, weeks, and months.
No. All date and time tools on DDaverse run entirely in your browser. No date values, birth dates, or timestamps are sent to or stored on any server.
UTC (Coordinated Universal Time) is the world's primary time standard and does not observe daylight saving time. Local time is UTC adjusted by your timezone offset. The Unix Timestamp Converter shows both UTC and local time so you can verify the conversion in both reference frames.
Yes. All date and time tools on DDaverse are completely free with no account, no subscription, and no usage limits.
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