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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Quick Answer: 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.

How to Calculate Coordinates Converter

  1. Enter the coordinates: Type latitude and longitude as a pair separated by a comma.
  2. Choose the input format: Select DD, DDM, or DMS.
  3. Choose the output format: Pick the format you want to view.
  4. Read the result: The calculator converts both latitude and longitude at once.

Coordinates Converter Formula

DD = degrees + minutes/60 + seconds/3600
Variable Meaning Unit
DD Decimal degrees degrees
DMS Degrees, minutes, seconds degrees/minutes/seconds

Worked Examples

USA - City center
  • 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.

UK - Reverse check
  • 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.

EU - Minutes format
  • 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.

GCC - Southern hemisphere
  • 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.
Common latitude and longitude format styles.
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

Yes. Enter the coordinate pair and the calculator converts both parts together.

Yes. Negative values and hemisphere letters are supported.

DD means decimal degrees, the most compact coordinate format.

DMS means degrees, minutes, and seconds, a traditional map format.
Planning note: Coordinate formatting only. Verify sign conventions and hemisphere labels for your mapping system.

References

Last reviewed: March 2026