Gon to Gradian Converter
Convert gons to gradians with our free online angle converter.
Quick Answer
1 Gon = 1 gradians
Formula: Gon × conversion factor = Gradian
Use the calculator below for instant, accurate conversions.
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All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.
Gon to Gradian Calculator
How to Use the Gon to Gradian Calculator:
- Enter the value you want to convert in the 'From' field (Gon).
- The converted value in Gradian will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Angle category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Gon to Gradian: Step-by-Step Guide
Converting Gon to Gradian involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
grad = gon × 1Example Calculation:
1 gon = 1 grad
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
Need to convert to other angle units?
View all Angle conversions →What is a Gon and a Gradian?
1 gon = 1/400 of a full circle = 0.9 degrees = 0.01571 radians
Key conversions:
- 100 gons = 90 degrees (right angle)
- 200 gons = 180 degrees (straight angle)
- 400 gons = 360 degrees (full circle)
- 1 gon = 0.9° = π/200 radians
Alternative names: Gradian, grad, grade (same unit, different names)
1 gradian = 1/400 of a full circle = 0.9 degrees = 0.01571 radians
Key conversions:
- 100 gradians = 90 degrees (right angle)
- 200 gradians = 180 degrees (straight angle)
- 400 gradians = 360 degrees (full circle)
- 1 gradian = 0.9° = π/200 radians
Symbols: grad, gon, or superscript "g" (e.g., 100ᵍ)
Note: The Gon is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Gradian belongs to the imperial/US customary system.
Common Uses and Applications: gons vs gradians
Explore the typical applications for both Gon (imperial/US) and Gradian (imperial/US) to understand their common contexts.
Common Uses for gons
Surveying: Land surveys and topographic mapping in Europe, especially France, Germany, Switzerland - THE standard in continental Europe. Civil Engineering: Construction projects, road gradients, slope calculations - preferred by engineers trained in metric system. Military: Artillery targeting and ballistics in some European armies - standardized for ballistics calculations. Cartography: Map making and coordinate systems in countries using metric system - seamless with metric philosophy.
When to Use gradians
Surveying: Primary angle unit in France, Germany, Switzerland, and Scandinavia for land surveys. Civil Engineering: Building construction, road design, slope measurements in Europe. Military: Artillery calculations and targeting in European armed forces. Geodesy: Precise Earth measurements and coordinate systems in metric countries.
Additional Unit Information
About Gon (gon)
How do I convert gons to degrees?
Formula: Degrees = Gons × 0.9 (or Gons × 9/10)
Examples:
- 100 gons = 90°
- 200 gons = 180°
- 400 gons = 360°
- 50 gons = 45°
- 1 gon = 0.9°
How do I convert degrees to gons?
Formula: Gons = Degrees ÷ 0.9 (or Degrees × 10/9)
Examples:
- 90° = 100 gons
- 45° = 50 gons
- 180° = 200 gons
- 360° = 400 gons
- 1° = 1.111 gons
Why use gons instead of degrees?
Decimal convenience: Base-10 system makes calculations easier without fractions.
Advantages:
- Right angle = 100 (clean decimal)
- Easier to divide: 400 ÷ 4 = 100, 400 ÷ 8 = 50
- Better for percentage calculations
- Aligns with metric system philosophy
- Simpler mental arithmetic
Metric integration: Designed to work with decimal measurement system used in surveying.
Are gons and gradians the same?
Yes, identical units with different names:
- Gon: Modern term, ISO standard (ISO 31-1)
- Gradian: Traditional term, still widely used
- Grad: Abbreviated form, common in calculators
- Grade: French term (same unit)
All refer to 1/400 of a circle. The term "gon" is preferred in modern standards to avoid confusion with other uses of "grade" (like road gradients or academic grades).
Symbol variations: gon, grad, or superscript "g" (e.g., 50ᵍ)
About Gradian (grad)
How do I convert gradians to degrees?
Formula: Degrees = Gradians × 0.9 (or Gradians × 9/10)
Examples:
- 100 gradians = 90°
- 200 gradians = 180°
- 400 gradians = 360°
- 50 gradians = 45°
- 25 gradians = 22.5°
Gradians to Degrees converter →
How do I convert gradians to radians?
Formula: Radians = Gradians × (π/200) ≈ Gradians × 0.01571
Examples:
- 100 gradians = π/2 ≈ 1.571 radians
- 200 gradians = π ≈ 3.142 radians
- 400 gradians = 2π ≈ 6.283 radians
- 50 gradians = π/4 ≈ 0.785 radians
Gradians to Radians converter →
What's the difference between gradians and gons?
No difference - they're the same unit:
- Gradian: Traditional name, widely recognized
- Gon: Modern ISO standard term (ISO 31-1)
- Grad: Common abbreviation used on calculators
- Grade: French name (le grade)
All represent 1/400 of a circle. "Gon" is preferred in modern technical standards to avoid confusion with other meanings of "grade" (road grade, academic grade, etc.).
Why were gradians created?
Decimal system alignment: Part of French Revolution's metrication effort to create base-10 measurements.
Historical context:
- Created in 1795 alongside metric system
- Right angle = 100 (easier than 90 degrees)
- Full circle = 400 (divisible by 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200)
- Percentage calculations simpler: 25 gradians = 25% of right angle
Advantages over degrees:
- Pure decimal arithmetic (no sexagesimal base-60 calculations)
- Easier mental math: 50 gradians = half right angle
- Better integration with metric measurements
- Simpler for computing and digital systems
Modern usage: While degrees dominate globally, gradians remain standard in European surveying, civil engineering, and cadastral work. France, Switzerland, and Germany extensively use gradians in official surveying.
Conversion Table: Gon to Gradian
| Gon (gon) | Gradian (grad) |
|---|---|
| 0.5 | 0.5 |
| 1 | 1 |
| 1.5 | 1.5 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 25 | 25 |
| 50 | 50 |
| 100 | 100 |
| 250 | 250 |
| 500 | 500 |
| 1,000 | 1,000 |
People Also Ask
How do I convert Gon to Gradian?
To convert Gon to Gradian, enter the value in Gon in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our angle converter page to convert between other units in this category.
Learn more →What is the conversion factor from Gon to Gradian?
The conversion factor depends on the specific relationship between Gon and Gradian. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.
Can I convert Gradian back to Gon?
Yes! You can easily convert Gradian back to Gon by using the swap button (⇌) in the calculator above, or by visiting our Gradian to Gon converter page. You can also explore other angle conversions on our category page.
Learn more →What are common uses for Gon and Gradian?
Gon and Gradian are both standard units used in angle measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our angle converter for more conversion options.
For more angle conversion questions, visit our FAQ page or explore our conversion guides.
Helpful Conversion Guides
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📚 How to Convert Units
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⚖️ Metric vs Imperial
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⚠️ Common Mistakes
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Verified Against Authority Standards
All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.
National Institute of Standards and Technology — Fundamental physical constants and unit conversions
Bureau International des Poids et Mesures — International System of Units (SI) definitions and standards
International Organization for Standardization — Quantities and units international standards series
Last verified: February 19, 2026