Enter your coordinates in decimal degrees here to calculate how accurate they are likely to be:

Lat: Long: [Datum is assumed to be WGS84]

Precision = 1
Latitude = 59°57'N (As the uncertainty decreases as you move away from the equator)

Equations Source : MaNIS/HerpNet/ORNIS Georeferencing Guidelines [elib.cs.berkeley.edu]

If the above link doesnt work, found a copy at manisnet.org :)