Coordinates Converter
Convert latitude and longitude between decimal degrees, degrees decimal minutes, and degrees minutes seconds. This page also keeps the formula, examples, FAQs, and references close by so you can check the result with confidence.
What This Coordinates Converter Helps You Do
40.748417, -73.985833 in decimal degrees becomes 40° 44' 54.3012" N, 73° 59' 9.0000" W in DMS. Review the formula and examples below if you want to see how the result is derived.
This page is meant to give you a fast answer, but it also helps you double-check the math before you make a decision. Start with the inputs that you already know, run the calculation, and then compare the output with the formula, examples, and FAQs below so you can see whether the answer fits the situation you are modeling.
If the result looks off, the usual causes are a unit mismatch, a missing decimal, the wrong scenario, or a value that needs to be entered as a rate instead of a total. The notes on this page are designed to make those checks easy without forcing you to leave the calculator and search for context elsewhere.
- Use the calculator first for a quick estimate.
- Use the formula to understand how the result is built.
- Use the examples to compare common use cases.
- Use the references when the answer depends on a standard or assumption.
Common Checks
A quick result is useful, but the best result is one that still makes sense when you look at it a second time. If you are comparing scenarios, try changing one input at a time so you can see which variable has the biggest impact on the final answer. That makes it much easier to spot whether the calculation matches your expectations.
It also helps to keep the context of the problem in mind. A calculator can tell you the math, but you still need to decide whether the input represents a total, a rate, an average, or a category-specific assumption. When in doubt, start with a simple example from the page and scale up from there.
- Check that every unit matches the rest of the problem.
- Keep rates, totals, and averages separate.
- Adjust one variable at a time when testing scenarios.
- Use the smallest realistic input first, then scale upward.
Scenario Planning
This calculator is especially useful when you want a quick answer before you commit time, money, or effort. Try one baseline input set, then change a single number and compare the result so you can see how sensitive the answer is to that variable.
That makes the page useful for more than just arithmetic. It becomes a small decision aid that helps you compare options, test assumptions, and explain the final number with confidence when you need to share it with someone else.
Converted Result
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How to Calculate Coordinates Converter
- Enter the coordinates: Type latitude and longitude as a pair separated by a comma.
- Choose the input format: Select DD, DDM, or DMS.
- Choose the output format: Pick the format you want to view.
- Read the result: The calculator converts both latitude and longitude at once.
Coordinates Converter Formula
| Variable | Meaning | Unit |
|---|---|---|
| DD | Decimal degrees | degrees |
| DMS | Degrees, minutes, seconds | degrees/minutes/seconds |
Worked Examples
- Coordinate pair: 40.748417, -73.985833
- From format: Decimal degrees
- To format: Degrees minutes seconds
Result: 40° 44' 54.3012" N, 73° 59' 9.0000" W
A decimal degree pair becomes a map-friendly DMS value.
- Coordinate pair: 51° 30' 26" N, 0° 7' 39" W
- From format: Degrees minutes seconds
- To format: Decimal degrees
Result: 51.507222, -0.127500
DMS coordinates can be converted back to decimal degrees for GIS tools.
- Coordinate pair: 48° 51.5' N, 2° 17.2' E
- From format: Degrees decimal minutes
- To format: Decimal degrees
Result: 48.858333, 2.286667
DDM is a common middle ground for navigation data.
- Coordinate pair: 33.9249, 18.4241
- From format: Decimal degrees
- To format: Degrees decimal minutes
Result: 33° 55.494' S, 18° 25.446' E
The formatter preserves hemispheres when switching formats.
Coordinate format reference
Common latitude and longitude format styles.
| Range | Meaning | Action |
|---|---|---|
| Decimal degrees | Best for software and maps | Use when you want compact coordinates. |
| DDM | Good compromise for navigation | Use when you need a human-readable format with decimals. |
| DMS | Traditional map format | Use for surveying, charts, and printed references. |
| Format | Example | Notes |
|---|---|---|
| DD | 40.748417, -73.985833 | Decimal degrees |
| DDM | 40° 44.904' N | Degrees and decimal minutes |
| DMS | 40° 44' 54.3012" N | Degrees, minutes, seconds |
Frequently Asked Questions
References
Last reviewed: March 2026