Quadrant to Gon Converter

Convert quadrants to gons with our free online angle converter.

Quick Answer

1 Quadrant = 100 gons

Formula: Quadrant × conversion factor = Gon

Use the calculator below for instant, accurate conversions.

Our Accuracy Guarantee

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.

Last verified: February 2026Reviewed by: Sam Mathew, Software Engineer

Quadrant to Gon Calculator

How to Use the Quadrant to Gon Calculator:

  1. Enter the value you want to convert in the 'From' field (Quadrant).
  2. The converted value in Gon will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Angle category.
  4. Click the swap button (⇌) to reverse the conversion direction.
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How to Convert Quadrant to Gon: Step-by-Step Guide

Converting Quadrant to Gon involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

gon = quad × 100

Example Calculation:

1 quad = 100 gon

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.

What is a Quadrant and a Gon?

1 quadrant = 1/4 of a full circle = 90 degrees = π/2 radians ≈ 1.5708 radians

Key conversions:

  • 1 quadrant = 90 degrees
  • 1 quadrant = π/2 ≈ 1.5708 radians
  • 1 quadrant = 100 gradians (or gons)
  • 4 quadrants = 360 degrees (full circle)
  • 2 quadrants = 180 degrees (straight angle)

Symbol: quad or Q (sometimes written as "right angle")

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)

Note: The Quadrant is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Gon belongs to the imperial/US customary system.

Common Uses and Applications: quadrants vs gons

Explore the typical applications for both Quadrant (imperial/US) and Gon (imperial/US) to understand their common contexts.

Common Uses for quadrants

Coordinate Systems: Cartesian plane divided into four quadrants (I, II, III, IV). Navigation: Compass quadrants (NE, SE, SW, NW) for direction description. Astronomy: Celestial sphere divided into quadrants for star mapping. Geometry: Right angles and perpendicular measurements in construction and design.

When to Use 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.

Additional Unit Information

About Quadrant (quad)

How do I convert quadrants to degrees?

Formula: Degrees = Quadrants × 90

Examples:

  • 1 quadrant = 90°
  • 2 quadrants = 180°
  • 3 quadrants = 270°
  • 4 quadrants = 360°
  • 0.5 quadrants = 45°

Quadrants to Degrees converter →

How do I convert quadrants to radians?

Formula: Radians = Quadrants × (π/2) ≈ Quadrants × 1.5708

Examples:

  • 1 quadrant = π/2 ≈ 1.571 radians
  • 2 quadrants = π ≈ 3.142 radians
  • 3 quadrants = 3π/2 ≈ 4.712 radians
  • 4 quadrants = 2π ≈ 6.283 radians
  • 0.5 quadrants = π/4 ≈ 0.785 radians

Quadrants to Radians converter →

What are the four quadrants in a coordinate plane?

Quadrant system divides the Cartesian plane using x and y axes:

Quadrant I (First): x > 0, y > 0

  • Angles: 0° to 90° (or 0 to π/2 radians)
  • Example point: (3, 4)

Quadrant II (Second): x < 0, y > 0

  • Angles: 90° to 180° (or π/2 to π radians)
  • Example point: (-3, 4)

Quadrant III (Third): x < 0, y < 0

  • Angles: 180° to 270° (or π to 3π/2 radians)
  • Example point: (-3, -4)

Quadrant IV (Fourth): x > 0, y < 0

  • Angles: 270° to 360° (or 3π/2 to 2π radians)
  • Example point: (3, -4)

Axes: Points on x or y axes are not in any quadrant.

Why is a right angle called a quadrant?

Etymology: "Quadrant" comes from Latin "quadrans" meaning "fourth part."

Historical context:

  • A right angle is 1/4 of a full circle rotation
  • Ancient navigational instruments called "quadrants" were quarter-circle shaped
  • The term emphasizes the fractional relationship: 1 quadrant = 1/4 circle

Modern usage: While "right angle" is more common in everyday geometry, "quadrant" is still used in:

  • Coordinate systems (Quadrant I, II, III, IV)
  • Navigation and surveying
  • Astronomy and celestial mechanics
  • Mathematical analysis and calculus

The term "quadrant" emphasizes the measurement as a fraction of a circle, while "right angle" emphasizes the geometric perpendicularity (90°).

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°

Gons to Degrees converter →

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

Degrees to Gons converter →

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)

Conversion Table: Quadrant to Gon

Quadrant (quad)Gon (gon)
0.550
1100
1.5150
2200
5500
101,000
252,500
505,000
10010,000
25025,000
50050,000
1,000100,000

People Also Ask

How do I convert Quadrant to Gon?

To convert Quadrant to Gon, enter the value in Quadrant 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 Quadrant to Gon?

The conversion factor depends on the specific relationship between Quadrant and Gon. 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 Gon back to Quadrant?

Yes! You can easily convert Gon back to Quadrant by using the swap button (⇌) in the calculator above, or by visiting our Gon to Quadrant converter page. You can also explore other angle conversions on our category page.

Learn more →

What are common uses for Quadrant and Gon?

Quadrant and Gon 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.

All Angle Conversions

Degree to RadianDegree to GradianDegree to ArcminuteDegree to ArcsecondDegree to TurnDegree to RevolutionDegree to QuadrantDegree to GonDegree to MilRadian to DegreeRadian to GradianRadian to ArcminuteRadian to ArcsecondRadian to TurnRadian to RevolutionRadian to QuadrantRadian to GonRadian to MilGradian to DegreeGradian to RadianGradian to ArcminuteGradian to ArcsecondGradian to TurnGradian to RevolutionGradian to QuadrantGradian to GonGradian to MilArcminute to DegreeArcminute to RadianArcminute to GradianArcminute to ArcsecondArcminute to TurnArcminute to RevolutionArcminute to QuadrantArcminute to GonArcminute to MilArcsecond to DegreeArcsecond to RadianArcsecond to GradianArcsecond to ArcminuteArcsecond to TurnArcsecond to RevolutionArcsecond to QuadrantArcsecond to GonArcsecond to MilTurn to DegreeTurn to RadianTurn to GradianTurn to ArcminuteTurn to ArcsecondTurn to RevolutionTurn to QuadrantTurn to GonTurn to MilRevolution to DegreeRevolution to RadianRevolution to GradianRevolution to ArcminuteRevolution to ArcsecondRevolution to TurnRevolution to QuadrantRevolution to GonRevolution to MilQuadrant to DegreeQuadrant to RadianQuadrant to GradianQuadrant to ArcminuteQuadrant to ArcsecondQuadrant to TurnQuadrant to RevolutionQuadrant to MilGon to DegreeGon to RadianGon to GradianGon to ArcminuteGon to ArcsecondGon to TurnGon to RevolutionGon to QuadrantGon to MilMil to DegreeMil to RadianMil to GradianMil to ArcminuteMil to ArcsecondMil to TurnMil to RevolutionMil to QuadrantMil to Gon

Verified Against Authority Standards

All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.

NIST Reference on Constants, Units and Uncertainty

National Institute of Standards and TechnologyFundamental physical constants and unit conversions

BIPM SI Units

Bureau International des Poids et MesuresInternational System of Units (SI) definitions and standards

ISO 80000

International Organization for StandardizationQuantities and units international standards series

Last verified: February 19, 2026