Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
Degrees to Gradians Converter
gradians = degrees × 10 / 9. 90° = 100 gon.
A right angle is 100 gon (gradians), 90°, π/2 rad. Surveying in some countries still uses gon. A full circle is 400 gon. Do not mix gon and degrees in a bearing without saying so.
Degrees
° → gon
100 gon
90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
- You typed
- 90 °
- One gon is
- 0.9 °
- How it’s calculated
- gradians = degrees × 10 / 9. 90° = 100 gon.
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
Degrees
The “Degrees” value used in this tool’s formula. Adjust it to see results update live.
How this calculator works
A right angle is 100 gon (gradians), 90°, π/2 rad. Surveying in some countries still uses gon. A full circle is 400 gon. Do not mix gon and degrees in a bearing without saying so. gradians = degrees × 10 / 9. 90° = 100 gon. Example: 90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
gradians = degrees × 10 / 9. 90° = 100 gon.
Example: 90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
When to use this Degrees to Gradians
Common use cases
- A right angle is 100 gon (gradians), 90°, π/2 rad. Surveying in some countries still uses gon. A full circle is 400 gon. Do not mix gon and degrees in a bearing without saying so.
- Sanity-check with this case: 90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
- The relationship is: gradians = degrees × 10 / 9. 90° = 100 gon.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: Degrees
- gradians = degrees × 10 / 9. 90° = 100 gon.
- Example on the page: 90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
How to Convert Degrees to Gradians Step-by-Step
- 1Enter Degrees. Use the values you have, not a catalog average, unless that is all you know.
- 2gradians = degrees × 10 / 9. 90° = 100 gon.
- 3Worked case: 90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
gradians = degrees × 10 / 9. 90° = 100 gon.
90° → 100 gon. 180° → 200 gon. 45° → 50 gon.
Example: set Degrees = 90, then read the result.
Variable definitions
- value
Degrees
The “Degrees” field. Default 90; typical range -720–720.
- The conversion (gradians = degrees × 10 / 9. 90° = 100 gon.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
No. Gradians split the circle into 400. Radians into 2π.
Related calculators
Unit Converters
- Degrees to ArcminutesSixty arcminutes in a degree. Survey bearings, astronomy declination, and map minutes all use this 60, not SI prefixes. 0.5° is 30′. A full turn is 21,600′.
- Degrees to Arcseconds3,600 arcseconds in a degree. Seeing of 1″, GPS, and IAU constants live here. 1/3600° is one arcsecond. Parallax of 1″ at 1 au defines the parsec.
- Fahrenheit to Gas MarkAn American 350 °F cake is UK Gas Mark 4. The mark scale jumps about 25 °F per number. Round to the nearest mark your knobs actually have. Pizza steel at 500 °F is past Mark 9 — just use the number.
- Milliradians to DegreesA milliradian is 0.001 rad ≈ 0.057296°. Optics, ballistics “mils,” and some scopes use mrad. NATO mil is often 1/6400 of a circle (~0.98175 mrad) — not this SI milliradian. Read the reticle manual.
- Radians to Degreesπ rad is 180°. A full turn is 2π rad or 360°. Calculators in radian mode will ruin a trig exam if you type 90 thinking it is a right angle.
- Rankine to FahrenheitRankine is absolute Fahrenheit: 0 °R is absolute zero, and the degrees are the same size as °F. Subtract 459.67. Thermodynamics homework in US customary units lives here. 530 °R is about 70 °F.
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4.8
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4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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