Convert candela/square metre to blondel

Vice Versa: blondel to candela/square metre

Candela/Square Metre

The candela per square metre (cd/m²) is the SI unit of luminance, measuring the luminous intensity per unit area of light travelling in a given direction. It is also known as the nit. It is used to characterise the brightness of display screens and other light sources.

Blondel

The blondel is a unit of luminance, equivalent to the apostilb, named after the French engineer André Blondel. One blondel equals 1/π candela per square metre (approximately 0.3183 cd/m²). The term apostilb is preferred in modern usage.

Candela/Square Metre to Blondel conversion table

Candela/Square Metre	Blondel	Blondel	Candela/Square Metre
1	3.14159	1	0.31831
2	6.28319	2	0.63662
3	9.42478	3	0.95493
5	15.708	5	1.59155
10	31.4159	10	3.1831
20	62.8319	20	6.3662
25	78.5398	25	7.95775
50	157.08	50	15.9155
100	314.159	100	31.831
250	785.398	250	79.5775
500	1570.8	500	159.155
1000	3141.59	1000	318.31

How to convert Candela/Square Metre to Blondel

1 cd/m² = 3.14159 blondel. To convert any value, multiply it by 3.14159. For example, 25 cd/m² = 78.5398 blondel.

Frequently asked questions

How many blondel are there in one cd/m²?: One cd/m² is equal to 3.14159 blondel.
How do you convert Candela/Square Metre to Blondel?: Multiply the value in Candela/Square Metre by 3.14159 to get the result in Blondel.
How much is 25 cd/m² in blondel?: 25 cd/m² is equal to 78.5398 blondel.
How do you convert Blondel back to Candela/Square Metre?: Divide by the same factor: multiply the value in Blondel by 0.31831 to get Candela/Square Metre.