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Stardate Calculator

Convert Earth date to Star Trek stardate (TNG and TOS).

Stardate (TNG)
-296644.08

How stardates work

  • TNG style: 1000 stardates per year. Year prefix is 2323 + (stardate ÷ 1000).
  • TOS style: roughly half a stardate per day, mostly inconsistent in the original show.
  • Captain's logs in the show often round to the nearest decimal.
  • Memorial Day 2380 ≈ stardate 57000. The stardate at any point you watch the show is canonical only insofar as the writers tracked it.

Stardates are intentionally vague in the Star Trek canon. The TNG-era formula here matches the convention used in the Memory Alpha wiki and most fan sites. Useful for fanfiction, cosplay invitations, and dating Pittsburgh sci-fi club newsletters.

About

Pick a date. Returns TNG-era stardate (1000 per year, anchored at 2323) and TOS-style (1966 reckoning). Useful for fanfiction, cosplay invitations, and trekkie weddings.

How to use

  1. Pick a date.
  2. Pick TNG or TOS format.

FAQ

Is the formula canonical?+

Stardates were intentionally vague in the show. The TNG formula matches what most fan sites and Memory Alpha use. TOS-era stardates were inconsistent even between episodes.