Degrees ↔ Gradians Converter

Convert between degrees and gradians instantly

Enter degrees value to convert to gradians
Enter gradians value to convert to degrees
Conversion Result
90° = 100 gon
90 degrees = 100 gradians = 1.5708 radians

📚 Degrees ↔ Gradians Conversion Details

Degrees to Gradians Formula

gradians = degrees × (400 / 360)
gradians = degrees × (10 / 9)

To convert degrees to gradians, multiply degrees by 10/9.

Gradians to Degrees Formula

degrees = gradians × (360 / 400)
degrees = gradians × (9 / 10)

To convert gradians to degrees, multiply gradians by 9/10.

Bidirectional Conversion

This converter works both ways simultaneously:

  • Type in degrees → gradians updates automatically
  • Type in gradians → degrees updates automatically
  • No buttons to click - works as you type

Common Uses

  • Surveying and land measurement
  • Navigation systems
  • Engineering calculations
  • Mathematics education

📏 Angle Units Explained

Degrees (°) are the most common unit for measuring angles. A full circle is 360°.

Gradians (gon) are an alternative unit where a full circle is divided into 400 gradians.

// Key Relationships:
1 full circle = 360° = 400 gon
1° = (400/360) gon = (10/9) gon ≈ 1.1111 gon
1 gon = (360/400)° = (9/10)° = 0.9°

// Example Conversions:
90° = 90 × (10/9) = 100 gon
100 gon = 100 × (9/10) = 90°

📊 Conversion Table

Degrees (°) Gradians (gon) Description
0 gon Zero angle
45° 50 gon Eighth of a circle
90° 100 gon Right angle
180° 200 gon Straight angle
270° 300 gon Three-quarters circle
360° 400 gon Full circle

❓ Frequently Asked Questions

Q: What are gradians used for?

A: Gradians are primarily used in surveying, navigation, and some engineering fields where decimal divisions are preferred over fractional degrees.

Q: How many gradians are in a full circle?

A: There are exactly 400 gradians in a full circle, compared to 360 degrees.

Q: Is the conversion between degrees and gradians exact?

A: Yes, the conversion is mathematically exact: 1° = 10/9 gon and 1 gon = 9/10°.

Q: Which countries use gradians?

A: Gradians are commonly used in France and some other European countries, especially in surveying and military applications.