Convert Months to Timestamp

This tool converts numbers representing months into full UTC timestamps, using the Unix epoch (1970-01-01 00:00:00 UTC) as the starting point. If you enter 1, the result will be 1970-02-01 00:00:00. A value like 1.5 will return 1970-02-15 00:00:00, placing the timestamp midway through February.

Whether you’re working with analytics exports, data pipelines, or systems that store time in months since epoch, the Convert Months to Timestamp tool gives you clean, consistent, and readable results. It supports decimal inputs, handles large values, and works entirely in your browser.

The tool includes live output, trimming, file import/export, copy/clear, and options to skip invalid entries all instantly available and styled for bulk work.

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 or type values line by line into the Input Months Since Epoch field.
  • Each value is treated as months since 1970-01-01 00:00:00 UTC.
  • Use Trim input lines to remove extra spacing (default: on).
  • Enable Ignore invalid values to skip negative or non-numeric lines.
  • Turn on Maximize output to expand the results area for large lists.
  • Output updates live click Convert if needed to trigger manually.
  • Use Copy Output to copy results (you’ll see a brief “Copied!”).
  • Click Export to File to save results as .txt.
  • Use Choose File to import .txt, .csv, .log, or .json files.
  • Click Clear All to reset input, output, filename, toggles, and counters.

What Convert Months to Timestamp can do:

This tool interprets each value as a number of months from the Unix epoch. The integer part determines the year and month (e.g. 24 = 1972-01-01), while the decimal part is converted into a proportional day offset inside that month.

It uses UTC and returns timestamps in YYYY-MM-DD HH:MM:SS format. That makes the results ideal for sorting, reading, storing, or piping into other tools. Invalid inputs are either skipped or labeled as Invalid, depending on your settings.

You can handle thousands of rows, include fractional months, and copy or export your results with one click. It’s built for working with offset-style time formats in modern backend systems, archival data, and analytics exports.

Example:

This example includes full months, fractions, and invalid inputs.

Input:

0
1
1.5
12
24.25
60.5
-2
not-a-number

Output:

1970-01-01 00:00:00
1970-02-01 00:00:00
1970-02-15 00:00:00
1971-01-01 00:00:00
1972-01-08 00:00:00
1975-01-16 00:00:00
Invalid
Invalid

Convert Months to Timestamp Table:

This table shows 10 real-world month offsets and their equivalent UTC timestamps.

MonthsUTC TimestampDescription
01970-01-01 00:00:00Epoch start
11970-02-01 00:00:00One full month
1.51970-02-15 00:00:00Mid-February
61970-07-01 00:00:006 months later
121971-01-01 00:00:00One year
24.251972-01-08 00:00:0024 months + 1/4
36.751973-01-24 00:00:0036 months + 3/4
60.51975-01-16 00:00:005 years + half month
1201980-01-01 00:00:0010 years later
600.252020-01-08 00:00:0050 years + 1/4 month

Common Use Cases:

Use this when converting analytics values, schedule offsets, or archival timestamps stored in monthly format. It’s especially useful for decoding exported values from analytics dashboards, subscription systems, or SaaS tools that store time in “months since epoch”.

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