EPSG:4326 aur EPSG:3857 mein kya antar hai?

4326 saada WGS84 latitude-longitude degree mein hai. 3857 unhi coordinates ka Web Mercator projection hai, metre mein naapi chaukor plane par — tile-based map andar isi par kaam karte hain.

Web Mercator 85 degree par kyun ruk jaata hai?

Kyunki projection poles par infinity chali jaati hai. 85.0511287° par kaatne se projected duniya jitni chaudi utni hi oonchi ho jaati hai, jisse use chaukor tile ke quadtree mein baanta ja sakta hai.

Kya Web Mercator purana EPSG:900913 code hi hai?

Haan — 900913 registration se pehle ka gair-sarkari code tha, aur 3857 aadhikarik pehchaan hai. 102100 aur 3785 bhi isi ke liye dikhte hain.

Kya Web Mercator metre mein area naapa ja sakta hai?

Bharose ke saath nahi. Scale factor latitude ke saath badhta hai, isliye projected plane par nikala area lagbhag us factor ke varg se bada aata hai.

Tile par ground resolution ka matlab kya hai?

Kisi zoom par ek screen pixel kitne asli metre dhakta hai. Zoom 0 par lagbhag 156 km per pixel, aur har level par aadha, latitude ke cosine se scaled.

Web Mercator Converter

Latitude-longitude ko Web Mercator metre mein aur wapas badliye, scale aur resolution ke saath.

Web Mercator Converter poori tarah aapke browser mein chalta hai. Coordinates aapke device par project hote hain, kisi server par nahi.

Map tiles nikaaliye

Web Mercator Converter ke baare mein

Web Mercator lagbhag har slippy map ke peeche wali projection hai, aur iske coordinates ellipsoid par degree nahi, sphere par metre hote hain. Dono ke beech aana-jaana do chhoti formula hain, par aisi jinme raat do baje typo ho jaata hai, aur ek sign ki galti marker ko doosre hemisphere mein rakh deti hai. Ye converter poori coordinate list par dono disha chalata hai. Saath hi wo do aankde bhi deta hai jo map ki shakal tay karte hain: aapke latitude par scale distortion, aur har zoom level par metre per pixel wali ground resolution.

Features

WGS84 degree ko EPSG:3857 metre mein aur wapas, line dar line
Poori list ek saath, har line ke liye error message
Daale gaye latitude par scale distortion factor
Kisi bhi zoom par metre per pixel ground resolution
256-pixel tile grid par global pixel coordinates
Disha badal kar output ko agla input banaya ja sakta hai
CSV export jisme latitude, longitude, x aur y saath hote hain

Web Mercator Converter kaise use karein

Disha chuniye: degree se metre, ya metre se degree
Apne coordinates paste kijiye, har line par ek jodi
Badle hue values padhiye aur copy ya CSV download kijiye
Zoom level set kijiye taaki resolution aur pixel position dikhe

Example

Input

51.5074, -0.1278

Output

-14226.631, 6711542.476

London EPSG:3857 metre mein — x longitude se, y latitude ke logarithmic term se.

Common errors aur troubleshooting

Poles ke paas y infinity ho jaata hai. — Web Mercator unhe dikha hi nahi sakta. Latitude ±85.0511° par kaat di jaati hai, wahi cut jo projected duniya ko chaukor banata hai.
Coordinates map par galat jagah girte hain. — Kram dekhiye. Yahan degree latitude pehle padhe jaate hain, jaise log likhte hain, jabki metre wali jodi x phir y hoti hai — ulti convention.
EPSG:3857 mein naapi doori zyada lagti hai. — Bhoomadhya rekha se door aisa hoga hi. Mercator 1/cos(latitude) se khinchta hai, isliye Delhi mein ek projected metre lagbhag 0.85 metre zameen ka hai.
Nateeje kisi GIS se thoda alag hain. — Kuchh tool WGS84 ellipsoid par project karte hain, us sphere par nahi jo Web Mercator paribhashit karta hai. Yahan wahi spherical roop hai jo EPSG:3857 kehta hai.

Aksar pooche jaane wale sawaal

EPSG:4326 aur EPSG:3857 mein kya antar hai?: 4326 saada WGS84 latitude-longitude degree mein hai. 3857 unhi coordinates ka Web Mercator projection hai, metre mein naapi chaukor plane par — tile-based map andar isi par kaam karte hain.
Web Mercator 85 degree par kyun ruk jaata hai?: Kyunki projection poles par infinity chali jaati hai. 85.0511287° par kaatne se projected duniya jitni chaudi utni hi oonchi ho jaati hai, jisse use chaukor tile ke quadtree mein baanta ja sakta hai.
Kya Web Mercator purana EPSG:900913 code hi hai?: Haan — 900913 registration se pehle ka gair-sarkari code tha, aur 3857 aadhikarik pehchaan hai. 102100 aur 3785 bhi isi ke liye dikhte hain.
Kya Web Mercator metre mein area naapa ja sakta hai?: Bharose ke saath nahi. Scale factor latitude ke saath badhta hai, isliye projected plane par nikala area lagbhag us factor ke varg se bada aata hai.
Tile par ground resolution ka matlab kya hai?: Kisi zoom par ek screen pixel kitne asli metre dhakta hai. Zoom 0 par lagbhag 156 km per pixel, aur har level par aadha, latitude ke cosine se scaled.

Related tools

Map Tile Calculator — Coordinates, XYZ, TMS aur quadkey, tile count ke saath.
Coordinate Converter — Ek lat/long pair ko decimal degrees, DMS aur DDM ke beech convert karein.
UTM Converter — Lat/long aur UTM zone, easting aur northing ke beech dono taraf convert karein.
Coordinate Distance — Do coordinates ke beech great-circle distance, bearing aur midpoint nikalein.
GeoJSON Bounding Box — Kisi bhi GeoJSON ka bbox, centre, area aur length dono orders mein.
Geohash Converter — Lat/long ko geohash mein encode karein aur point, bounding box aur neighbors mein decode karein.