GPS Time Converter

Tool for engineers and researchers to convert GPS time to UTC and Unix time, enabling precise timestamp alignment across logs, datasets, and devices.

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2,072+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how GPS Time Converter processes input data instantly inside your browser.

Sample Input Start: Los Angeles (34.0522, -118.2437), End: New York (40.7128, -74.0060)

Computed Result Geodesic Great-Circle Distance: 3,935 Kilometers (2,445 Miles)

Execution Mode Client-Side In-Browser JS

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About This Tool

This GPS time converter converts between GPS time, UTC, and Unix time. It accepts input as GPS week and seconds_of_week or as ISO UTC or Unix timestamp. It uses the latest leap-second table to produce synchronized results.
\nThe tool then applies the conceptual relations between time standards: GPS time is a continuous count from the GPS epoch (1980-01-06); UTC is GPS time minus cumulative leap seconds; Unix time is UTC plus the Unix epoch offset. The module computes t_gps, applies the leap-second adjustment, and outputs GPS week/seconds, UTC ISO, and Unix time, with additional diagnostic values as needed.
\nBeneficiaries include embedded developers, data scientists, log analysts, and researchers who must align events across satellite feeds, sensors, and back-end systems. Its unique value lies in up-to-date leap-second handling, explicit cross-representation outputs, and the option to expose the leap-second count for audit trails. Core features include multi-format input, robust validation, and clear representations of each time standard for downstream processing.

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How to Use

Select source_time_type (GPS, UTC, or Unix) and provide the corresponding inputs.
Optionally enable leap_seconds_applied or adjust rounding behavior.
Run conversion to generate gps_week, seconds_of_week, utc_datetime, and unix_time.
Review outputs and, if needed, copy to your data pipelines or logs.
Use the GPS week/seconds combination for epoch calculations or cross-system alignment.

Frequently Asked Questions

Find Quick Answers

How is leap second handled in conversions?

The converter uses the cumulative leap seconds as published for the given date. GPS time is converted to UTC by subtracting this leap-second count, and then to Unix time using the standard epoch offset. This yields consistent results across representations.

What inputs and outputs are supported?

Inputs can be GPS (gps_week and seconds_of_week), UTC (ISO 8601), or Unix (seconds since 1970-01-01). Outputs include GPS week, seconds_of_week, UTC ISO, Unix time, and a status field indicating success or error.

What if data is missing or invalid?

Missing required fields or out-of-range values produce explicit error codes. If leap-second data for the specified date is unavailable, the tool returns an error rather than guessing, to avoid mis-timestamps.

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