Convert Years to Timestamp

This tool converts numeric values that represent years since the Unix epoch into full UTC timestamps. The Unix epoch begins on 1970-01-01 00:00:00 UTC. If you enter 1, the result will be 1971-01-01 00:00:00. A decimal like 1.5 returns 1971-07-02 00:00:00, which is halfway through the second year.

You can use this tool to convert age-based offsets, analytics exports, or backend counters into readable datetime values. The interface works instantly and entirely in your browser. It supports fractional years, handles large offsets, and gives results in YYYY-MM-DD HH:MM:SS format.

It also comes with copy/export, file import, and toggles to ignore invalid data or maximize the output display.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Total items: 0
Options
Trim input lines
Ignore invalid values
Maximize output

How to Use:

  • Paste one value per line into the Input Years Since Epoch field.
  • Each number represents years since 1970-01-01 00:00:00 UTC.
  • Use the Trim input lines toggle to remove extra spacing automatically.
  • Enable Ignore invalid values to skip over negative or non-numeric entries.
  • Turn on Maximize output to expand the results panel.
  • Results update automatically as you type, or click Convert to refresh manually.
  • Use Copy Output to copy results the button flashes “Copied!” briefly.
  • Click Export to File to save the output as .txt.
  • Click Choose File to import .txt, .csv, .log, or .json files.
  • Click Clear All to reset everything: input, output, filename, toggles, and counter.

What Convert Years to Timestamp can do:

This tool interprets each input as a number of years since the Unix epoch. For example, 5 becomes 1975-01-01 00:00:00, while 10.5 becomes 1980-07-02 00:00:00. The decimal portion of the year is converted into a proportional position within the year, based on the actual number of milliseconds that year spans (to account for leap years).

The result is always in UTC, and the timestamp is zero-padded and formatted cleanly for spreadsheet imports, log syncing, or system auditing. Invalid lines like -3 or abc are either skipped or flagged as Invalid depending on your toggle.

Example:

Here’s a list of values demonstrating full years, fractional offsets, and invalid lines.

Input:

0
1
1.5
5
10.25
50.5
-3
not-a-number

Output:

1970-01-01 00:00:00
1971-01-01 00:00:00
1971-07-02 00:00:00
1975-01-01 00:00:00
1980-04-02 00:00:00
2020-07-02 00:00:00
Invalid
Invalid

Convert Years to Timestamp Table:

This table includes 10 real-world examples of years since epoch and their full UTC timestamp equivalents.

YearsUTC TimestampDescription
01970-01-01 00:00:00Epoch start
11971-01-01 00:00:00One year
1.51971-07-02 00:00:00Mid 2nd year
51975-01-01 00:00:005 years
10.251980-04-02 00:00:0010¼ years
201990-01-01 00:00:0020 years
302000-01-01 00:00:0030 years
40.52010-07-02 00:00:0040½ years
50.52020-07-02 00:00:0050½ years
53.752023-10-01 00:00:00Almost 54 years

Common Use Cases:

This tool is great for converting abstract “years since epoch” values into readable timestamps. Use it to decode backend metrics, align log values, or prep time-based data for reports and exports. It’s also helpful when you receive offsets from APIs or legacy systems that use year-based tracking.

Related Tools