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DMS Calculator (Degrees, Minutes, Seconds)

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The DMS Calculator is a tool used to convert between different angular measurement formats, such as Degrees, Minutes, and Seconds (DMS), Decimal Degrees, Radians, and Gradians. This calculator helps professionals, students, and hobbyists accurately convert angles for navigation, surveying, astronomy, and engineering applications.

Formulas DMS Calculator

Decimal Degrees to DMS

Degrees = Floor(Decimal Degrees)
Minutes = Floor((Decimal Degrees - Degrees) × 60)
Seconds = ((Decimal Degrees - Degrees) × 60 - Minutes) × 60

Where:

  • Floor() represents the integer part of a decimal number
  • Decimal Degrees is the angle in decimal form (e.g., 45.5°)
  • Degrees is the whole degree value
  • Minutes ranges from 0 to 59
  • Seconds ranges from 0 to 59.999...
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DMS to Decimal Degrees

Decimal Degrees = Degrees + (Minutes / 60) + (Seconds / 3600)

Where:

  • Degrees is the whole degree value
  • Minutes ranges from 0 to 59
  • Seconds ranges from 0 to 59.999...
  • Decimal Degrees is the resulting angle in decimal form

Radians to DMS

Decimal Degrees = Radians × (180 / π)

Then apply Decimal Degrees to DMS conversion.

DMS to Radians

Decimal Degrees = Degrees + (Minutes / 60) + (Seconds / 3600)
Radians = Decimal Degrees × (π / 180)

Where:

  • π (pi) is approximately 3.14159265359
  • Radians is the angle in radian form

Gradians to DMS

Decimal Degrees = Gradians × (9 / 10)

Then apply Decimal Degrees to DMS conversion.

DMS to Gradians

Decimal Degrees = Degrees + (Minutes / 60) + (Seconds / 3600)
Gradians = Decimal Degrees × (10 / 9)

Where:

  • Gradians is the angle in gradian form (400 gradians in a full circle)
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Conversion Table for Quick Reference

Measurement TypeFormulaExample
Decimal to DMSDegrees = Floor(Decimal) Minutes = Floor((Decimal - Degrees) × 60) Seconds = ((Decimal - Degrees) × 60 - Minutes) × 6045.75° = 45° 45' 00"
DMS to DecimalDecimal Degrees = Degrees + (Minutes / 60) + (Seconds / 3600)45° 45' 00" = 45.75°
Radians to DMSDecimal Degrees = Radians × (180 / π)1 rad = 57.2958°
DMS to RadiansRadians = Decimal Degrees × (π / 180)180° = π rad
Gradians to DMSDecimal Degrees = Gradians × (9 / 10)100 grad = 90°
DMS to GradiansGradians = Decimal Degrees × (10 / 9)90° = 100 grad

Example of DMS Calculator

Convert 48.2564° to DMS

Degrees = Floor(48.2564) = 48°
Minutes = Floor((48.2564 - 48) × 60) = 15'
Seconds = ((48.2564 - 48) × 60 - 15) × 60 = 23.04"
Result: 48° 15' 23.04"

Most Common FAQs

2. How accurate is a conversion between DMS and Decimal Degrees?

The conversion is highly accurate as long as all calculations maintain precision up to at least six decimal places, which is standard for scientific applications.

3. Can I use this calculator for GPS coordinates?

Yes, the DMS Calculator can convert GPS coordinates between DMS and Decimal Degrees formats, which is essential for mapping and navigation applications.

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