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Batch Coordinate Converter Pro
Data Never Leaves Your Browser
Convert up to 50,000 coordinates instantly. Support for any EPSG coordinate system, MGRS, UTM, DMS, Tokyo Datum, and more —all processed locally in your browser.
Quick Reference: Batch Conversion Risk
Professional warning: 50,000 rows amplify errors. A single wrong datum or EPSG code can propagate mistakes across the entire dataset and create $150,000+ defense costs.
Save your configuration now and restore it later to avoid repeated mapping mistakes.
Drag & Drop Your File Here
or click anywhere to browse from your device
CSV
TSV
TXT
Excel (.xlsx)
GeoJSON
Auto-detects delimiters. Max recommended: 50,000 rows.
Frequently Asked Questions
Is there a row limit?
We recommend batches of up to 50,000 rows for optimal browser performance. Larger datasets (up to 100,000 rows) will still process but may take longer. For files exceeding 100k rows, we recommend splitting them into smaller batches for reliability.
What happens to my data?
Nothing leaves your device. All geodetic transformations are performed in your browser's RAM using JavaScript Web Workers. No coordinate data is ever transmitted to our servers. This tool is fully client-side for maximum security and privacy compliance.
How accurate are the results?
We use the same high-precision geodetic library found in our manual tools. MGRS transformations are accurate to the 1-meter grid, UTM calculations use the full WGS84 ellipsoid model, and EPSG transformations leverage the industry-standard Proj4js library with definitions sourced directly from the EPSG registry.
Can I save my column mappings for recurring projects?
Yes. After configuring your conversion method and column mappings, click "Save This Configuration". On your next visit, the Batch Converter will automatically restore your previous settings, including the selected conversion method and EPSG code.
Which coordinate systems are supported?
We support any EPSG-registered coordinate system (10,000+ projections worldwide), plus MGRS, UTM, DMS, Tokyo Datum, Web Mercator, and decimal degree conversions. Enter any valid EPSG code in the Advanced Options panel to access the full registry.
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Certified Geodetic Insight
Verified against professional geodetic standards
The $50,000 Geodetic Drift Liability: NAD83 vs WGS84
Because the North American Plate moves ~2cm/year, NAD83(2011) and WGS84(G1762) currently diverge by over 2.2 meters. Using a "standard" GPS WGS84 coordinate for a high-precision NAD83 cadastral staking has triggered $50,000 Professional Liability claims for foundational rework and utility misplacement.
Risk Exposure Metric:
2.2-Meter Tectonic Drift & Epoch Accumulation
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Warning: Verify Your Calculation
Coordinate accuracy varies by device and datum. Do not use these results for legal or construction purposes without checking:
GPS Accuracy Alert
Your phone's GPS can be off by 30 meters. This can cause critical errors in your data.
Check My Accuracy →Datum Shift Risk
Using the wrong coordinate system (e.g. WGS84 vs NAD83) creates a permanent 1-meter offset.
Verify My Datum →Professional Context: Why Precision Matters
The WGS84 vs. NAD83 Dilemma
Most beginners assume that all latitude/longitude coordinates are the same. However, in North America, the difference between the WGS84 (used by GPS) and NAD83 (used for local surveying) can result in a physical shift of up to 1 meter. For high-precision construction projects, failing to account for this "datum shift" can lead to catastrophic misalignment of foundations or property boundaries.
Coordinate Drift Over Time
Tectonic plate movement means that your physical location on Earth is constantly moving relative to the GPS satellite network. In regions like Australia, this drift is significant enough that coordinate reference systems must be updated periodically. Our tools utilize the most stable geodetic algorithms to ensure that your conversions remain mathematically sound across different epochs.