Surveying & Mapping
GPS Coordinate Converter
Converts GPS coordinates between decimal degrees and degrees-minutes-seconds (DMS)
Updated May 13, 2026 · Live
What this tool does
Converts GPS coordinates between decimal degrees and degrees-minutes-seconds (DMS) format.
Converts a GPS coordinate between degrees-minutes-seconds ({degrees}° {minutes}' {seconds}" {hemisphere}) and decimal degrees, returning {result}.
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Formula Used
How the gps coordinate converter works
Converts GPS coordinates between decimal degrees, DMS, and UTM. The calculator takes your dimensions and supplier rates, applies a standard US construction formula, and returns a quantity with an indicative cost. Every figure is an estimate — site conditions always move the final number.
Typical US surveying and mapping wastage
Setting-out errors do not waste material at the survey stage but compound through every following trade — a 1/2" error at framing becomes a 2" problem by finish. Our defaults reflect common US trade allowances, and can be adjusted upwards for non-standard geometry or downwards where experience supports a lower figure.
What this tool does not do
It does not replace a professional quote, factor regional pricing, assess structural adequacy, or confirm building code compliance. Those remain the responsibility of a suitably qualified designer, engineer, or your local building official.
On-site considerations for gps coordinate converter
Boundary disputes are expensive. For plot-critical measurements, commission a Professional Land Surveyor (PLS) survey rather than relying on plat or assessor maps.
Codes and compliance
Wetland boundaries, flood zones (FEMA), and easements all need survey input. Floodplain construction follows the local floodplain ordinance and FEMA elevation certificates. When in doubt, file a pre-application question with your local building department — early clarity is cheaper than a corrective inspection.
Before you order
Rent rather than buy survey kit unless used weekly. A total station plus rod operator runs $400–600/day from a survey-equipment rental. Cross-checking the calculator’s output against a supplier quote helps catch differences in pricing assumptions — ask for exact product specifications (grade, finish, batch number) and confirm delivery timescales against your programme.
Adjusting the defaults
Every input in this calculator is editable. Enter your own dimensions, supplier prices, and wastage allowance — the output recalculates instantly. If the defaults feel off for your region or project type, your own numbers always override them.
Using this gps coordinate converter alongside other BuildMetricLab tools
This calculator works best as part of a planning workflow. Pair the quantity with our project contingency, labor-hours, and material-cost calculators to build a complete estimate before you pick up the phone to a supplier. All BuildMetricLab tools run entirely in your browser — no sign-up, no data sent anywhere, and every formula is shown on-page so you can audit the math.
Sources & methodology
This tool converts GPS coordinates between decimal degrees (DD) and degrees-minutes-seconds (DMS) format. DMS-to-decimal conversion applies DD = D + M/60 + S/3600, with sign determined solely by the hemisphere selector (N/E positive, S/W negative) — enter the Degrees field as a positive value and use the Hemisphere dropdown to set North/South or East/West; any negative sign typed into the Degrees field is ignored in favor of the hemisphere selection. Decimal-to-DMS conversion reverses this by taking the integer degree, the integer minutes from the remaining fraction, and the remaining seconds, with the hemisphere inferred from the sign of the decimal value and the selected axis (latitude or longitude). Both formats represent the same point on the Earth's surface; no positional accuracy is added or removed during conversion.
Frequently asked questions
Are GPS coordinate converter results accurate enough for navigation or surveying?
The conversion itself is an exact mathematical transformation with no loss of precision. However, the underlying coordinate's real-world accuracy depends on how it was originally captured (e.g. consumer GPS, survey-grade GNSS); always verify critical positions against a certified source before relying on them for legal or construction purposes.
Which coordinate format should I use as input?
Use DMS → Decimal when you have degrees, minutes and seconds (e.g. from a paper map or GPS receiver) and want a decimal value for mapping software. Use Decimal → DMS when you have a decimal coordinate (e.g. from Google Maps) and need the traditional degrees-minutes-seconds format.
Is this tool a substitute for a licensed land surveyor?
No. This tool performs a mathematical coordinate conversion only. For legal boundary determination, construction staking, or any survey requiring certified accuracy, consult a licensed land surveyor.
What does a negative degrees value mean when converting DMS to decimal?
Sign is set by the hemisphere selector, not by entering a negative number in the Degrees field. Enter degrees as a positive whole number and choose N/S or E/W to set the sign; the tool applies the negative sign automatically for South latitudes and West longitudes.
Spotted something off?
Calculations or display — let us know.
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