ヘルプセンター (ご利用ガイド) & User Guide
座標変換ツールの使い方をマスターする with detailed formatting rules and common solutions.
MGRS Formatting
We accept MGRS strings with or without spaces. Valid examples include:
18T WL 848 122
18TWL8480012200
UTM Formatting
Provide the Zone, Hemisphere, Easting, and Northing spaced clearly. Valid examples include:
18 N 543210 4567890
18T 543210 4567890
よくあるご質問 (FAQ) (FAQ)
Why is my Lat/Long output slightly off compared to Google Maps?
Google Maps uses a specific projection called Webメルカトル (EPSG:3857) but displays coordinates in WGS84 (EPSG:4326). If you are integrating with GIS software spanning different datums (like NAD27), you must apply a specific mathematical datum shift. Our converter defaults to pure mathematical WGS84 for MGRS and UTM mappings.
How large can my CSV file be?
Our native client-side engine is highly optimized. We consistently test with files up to 50,000 rows without crashing modern browsers. Since the data never uploads to a server, the only limit is your device's available local RAM.
My coordinate was auto-detected incorrectly.
The ユニバーサル測地エンジン instantly scans your input formatting. If it fails, please check for rogue characters like tabs, misaligned comma separators, or missing letters in MGRS inputs. Ensure Lat/Longs do not contain letters like "N" and "W" if using strict decimal format.
Still need technical assistance?
Our geomatics support team is ready to analyze your edge cases.
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重要：計算結果の正確性を確認してください
座標精度はデバイスや測地系によって異なります。以下の確認を行わずに実務で使用しないでください：