A gradian (also called grad or gon) is a unit of angle measurement where a full circle equals 400 gradians. This makes a right angle exactly 100 grad, which simplifies calculations in surveying and engineering.

What is the formula to convert gradians to degrees?

Multiply the gradian value by 9/10. For example, 100 grad × (9/10) = 90°. This works because 400 grad = 360°, so the ratio is 360/400 = 9/10.

How many degrees are in 400 gradians?

400 gradians equal exactly 360 degrees — one full circle. A right angle is 100 grad = 90°, and a straight angle is 200 grad = 180°.

Where are gradians used?

Gradians are commonly used in surveying, civil engineering, and some military and navigation contexts, particularly in continental Europe. Many scientific calculators have a "grad" mode alongside degrees and radians.

What is the difference between grad and gon?

"Grad" and "gon" are two names for the same unit. "Gon" is the ISO 31-1 standard name, while "grad" is the older term still commonly used on calculators and in engineering.

Gradians to Degrees Converter

Name: Gradians to Degrees Converter
Availability: InStock
Author: Nham Vu

Convert any angle from gradians (grad/gon) to degrees instantly using the formula degrees = gradians × 9/10, with a step-by-step breakdown and reference table.

Enter Angle in Gradians

Gradians (grad / gon)

Formula: deg = grad × (9/10)

Common Angle Reference Table

Click any row to load that angle into the converter.

Gradians (grad)	Degrees (°)	Common Name

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