Convert SWEREF99 to WGS 84

Convert coordinates from SWEREF99 (EPSG:4619) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-4619-to-epsg-4326

About converting SWEREF99 to WGS 84

SWEREF99 (EPSG:4619) is Sweden's national realisation of ETRS89, established from a 1999 GNSS campaign. It is the datum behind SWEREF99 TM (EPSG:3006) — the standard projection for Swedish national data — and the twelve local SWEREF99 dd mm zones.

Like all ETRS89 realisations, SWEREF99 is plate-fixed: it moves with the Eurasian plate, while WGS 84 tracks the global frame. The published transformation is a metre-level "null" operation, with the true difference growing at about 2.5 cm/year since 1989 — roughly 0.9 m by the mid-2020s.

For mapping, treat SWEREF99 and WGS 84 as equal. For engineering and geodesy, transform via ETRF/ITRF with explicit epochs.

Why people convert EPSG:4619 to EPSG:4326

Publishing SWEREF99 TM national data on web maps
Integrating Swedish open geodata with GPS workflows
Cross-Nordic projects mixing national ETRS89 realisations
Understanding metre-level offsets in precise comparisons

Try it: Stockholm, Sweden

Input (EPSG:4619): 18.0686, 59.3293

Official EPSG transformation from SWEREF99 to WGS 84

The EPSG Geodetic Parameter Dataset defines 1 transformation between SWEREF99 (EPSG:4619) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.

SWEREF99 to WGS 84 (1)

EPSG:1879±1 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Sweden
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	0	metre
Y-axis translation(ty)	0	metre
Z-axis translation(tz)	0	metre

Approximation at the +/- 1m level assuming that ETRS89 is equivalent to WGS 84. SWEREF99 is a regional realization of ETRS89.

Convert EPSG:4619 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4619", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4619 — SWEREF99

geographic system using latitude and longitude on an ellipsoid · Area of use: Sweden

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

More about EPSG:4619 →

Target: EPSG:4326 — WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs

More about EPSG:4326 →

Frequently asked questions

Why do SWEREF99 and WGS 84 differ at all?: SWEREF99 is fixed to the Eurasian plate (ETRS89), while WGS 84 follows the global ITRF. Continental drift accumulates ~2.5 cm/year, now approaching a metre — exactly the accuracy EPSG quotes for the null transformation.
Which EPSG code should Swedish data use: 4619 or 3006?: EPSG:4619 is the geographic (lat/lon) CRS; EPSG:3006 (SWEREF99 TM) is its national Transverse Mercator projection in metres. National datasets are usually delivered in 3006.
How accurate is converting SWEREF99 to WGS 84?: The most accurate official EPSG transformation between these systems is accurate to about ±1 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation in a desktop GIS.
Does my data leave the browser when I use this converter?: No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.

Need the reverse? Convert EPSG:4326 to EPSG:4619 →