LKS-94 ↔ WGS-84 Coordinate Converter & Meter

5 Geodetic Modules in One Place

1. 📋 Batch Coordinate List Conversion with KML & CSV Export: Paste dozens or hundreds of points directly from Excel, CAD, or GPS logs. The system parses every line and generates downloadable CSV (Excel) and KML (Google Earth & Drone missions) files.
2. 📐 Parcel Area & Perimeter Calculator (Gauss Formula): Enter 3 or more parcel boundary points to automatically calculate land area in m², Ares (a), Hectares (ha), and perimeter in meters (m) using the Gauss Shoelace formula.
3. 🗺️ Direct Integration with REGIA.lt & Geoportal.lt: In addition to Google Maps, instant direct action links open exact land coordinates inside Lithuania national cadastre map portals REGIA.lt and Geoportal.lt.
4. 🧭 Azimuth / Bearing Calculator: Computes the exact straight distance in meters, ΔX and ΔY offsets, along with the precise azimuth / direction angle in degrees, minutes, seconds (e.g., 124° 15′ 32″) and cardinal compass bearing (e.g., South-East / SE).
5. ⚡ Instant Client-Side Calculation (0ms): All processing runs inside the browser in real time as you type — no page reloads, no delay.

LKS-94 vs WGS-84: Why are two different coordinate systems used in Lithuania?

In Lithuania, anyone dealing with real estate, land surveying, or construction eventually encounters a confusing fact: Cadastral certificates or REGIA maps list land boundaries as numbers like X: 6061234, Y: 582123, but entering these numbers into a phone or Google Maps returns no results. Why?

The answer lies in the fundamental mathematics and purpose of both coordinate systems:

1. LKS-94 (Lithuanian Coordinate System 1994)

The official Lithuanian national geodetic system (established on the ETRS89 reference datum). Because the Earth is round and engineers need to measure distances and areas in meters, the LKS-TM (Transverse Mercator) projection flattens Lithuania into a 2D metric grid:

• X Value (Northing): Distance in meters from the Equator to the point in Lithuania (e.g., ~6,061,234 m).
• Y Value (Easting): Distance in meters from the 24°E central meridian with a 500,000 meter false easting offset (e.g., ~582,123 m).

2. WGS-84 (World Geodetic System 1984)

The global 3D ellipsoid standard used worldwide by GPS satellites, smartphones, drones (DJI, Autel), Google Maps, Apple Maps, and Waze. Locations are expressed in angular degrees (Decimal Degrees DD e.g. 54.6872, 25.2797 or DMS degrees/minutes/seconds).

The Cartographic Illusion, Helmert Transformation Mathematics, and Why the Earth Refuses to Be Flat

Humanity’s relentless ambition to compress a turbulent, geoidal, tectonically squashed terrestrial ellipsoid onto a flat Euclidean plane has always culminated in mathematical compromises or bitter neighborhood feuds over fence lines. Prior to 1994, Lithuanian surveying was trapped in a Soviet relic: the Pulkovo 1942 coordinate system built upon the F. Krasovsky ellipsoid. Anchored to the tsarist Pulkovo Observatory near Saint Petersburg, military cartography was deliberately plagued with distortion coefficients and secrecy distortions. The objective was ostensibly to prevent hypothetical NATO missiles from hitting bridges; in practice, it merely ensured that local drainage engineers and tractor drivers got hopelessly lost in their own peat bogs. The establishment of the sovereign LKS-94 system marked both a technical and geopolitical emancipation—ditching manipulated eastern projections for the rigorous, standardized Western ETRS89 and GRS80 reference ellipsoid, devoid of ideological fudge factors.

Behind the refined elegance of LKS-94 operates rigorous mathematical mechanics. The global GRS80 ellipsoid is defined by a semi-major axis a = 6,378,137 m and an inverse flattening factor 1/f = 298.257222101. Because curved surfaces cannot be unrolled onto flat sheets without linear distortion, the Transverse Mercator (LKS-TM) projection adopts the 24°E central meridian and scales it down with a deliberate scale factor of m₀ = 0.9998. This precise constant is engineered to compress scale distortions across central Lithuania to a nominal minimum, leaving peripheral districts (such as the Curonian Spit or Zarasai) with distortions under a few centimeters per kilometer. Transitioning between spatial WGS-84 ellipsoidal geometry and national grid planes relies mathematically on the 7-parameter Helmert transformation (three linear translations ΔX, ΔY, ΔZ, three rotational angles ω_x, ω_y, ω_z, and scale factor μ). Although the ETRS89 frame drifts northeast with the Eurasian tectonic plate at approximately 2.5 cm annually relative to dynamic ITRF/WGS-84, this continental migration remains cosmic trivia for everyday builders—until centimeter-level RTK drone mapping and structural bridge engineering enter the scene.

In practical construction, geodetic precision invariably collides with wooden boundary stakes shifted by burrowing moles or surreptitiously nudged fifty centimeters into your lawn by an enterprising neighbor under the cover of darkness. The most frequent modern blunder occurs when an enthusiastic property owner attempts to verify boundary markers using a commercial smartphone on Google Maps, whose uncorrected consumer GPS chips fluctuate by 3 to 5 meters. The predictable consequence? Finding out that a newly poured foundation legally intrudes upon a neighbor’s potato patch or a municipal right-of-way. Instant LKS-94 to WGS-84 conversion, Gauss shoelace polygon integration, and seamless KML exports provide the critical bridge between satellite constellations and Lithuania’s legally binding cadastre. Rigorous mathematics ensures your property boundaries remain where they belong, rather than evolving into an agonizing decadelong civil court saga.