Indian systems included
Kalianpur 1880, 1937 and 1975, the India zone grids, UTM zones 42N to 47N on both WGS 84 and Indian datums, and the WGS 84 state systems.
Convert DMS to Decimal Degrees
Convert degrees, minutes and seconds to decimal degrees and back. Accepts the many ways people write coordinates, including 17°17'55.5"N and 17 17 55.5 N.
Why this matters here
Older Indian survey and revenue records sit on the Everest spheroid, not WGS 84. Treating one as the other puts everything a few hundred metres out — enough to move a plot boundary onto a neighbour.
Bulk paste
Paste a column straight out of a spreadsheet. Anything after the first two values is carried through as a label, and the result downloads as CSV.
Nothing leaves your device
The arithmetic runs in your browser with proj4. No coordinate is transmitted, logged or stored anywhere.
Frequently asked questions
What formats can I paste in?
Degrees with a symbol, spaces, or letters all work: 17°17'55.5"N, 17 17 55.5 N, 17d17m55.5sN, and plain decimal degrees such as 17.298765N. A leading minus sign works in place of S or W.
Which order should I enter them in?
Latitude first, then longitude, matching how coordinates are usually written and read aloud. In bulk mode there is a swap option if your list is the other way round.
How precise is the result?
One second of latitude is roughly 31 metres, so a value given to two decimal places of seconds resolves to about 30 centimetres. Results are shown to eight decimal degrees, well beyond any survey requirement.
Is anything uploaded?
No. The arithmetic runs in your browser. Nothing is sent anywhere, which matters when the coordinates are from a property or revenue record.
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