Calculate the Area of an Equilateral Triangle

This will calculate the area of a triangle when all three sides are equal in length.

Radius
Area
389.711432
(results are rounded)

Equilateral Triangle Formula

The formula for the area of an equilateral triangle is below:

Area =  √3  * Side2
4

Equilateral Triangle Table
results are rounded
SideArea
10.4330
21.7321
33.8971
46.9282
510.825
615.588
721.218
827.713
935.074
1043.301
1152.395
1262.354
1373.179
1484.870
1597.428
16110.85
17125.14
18140.30
19156.32
20173.21
21190.96
22209.58
23229.06
24249.42
25270.63
26292.72
27315.67
28339.48
29364.16
30389.71
31416.13
32443.41
33471.55
34500.56
35530.44
36561.18
37592.79
38625.27
39658.61
40692.82
41727.89
42763.83
43800.64
44838.31
45876.85
46916.25
47956.53
48997.66
491,039.7
501,082.5
511,126.3
521,170.9
531,216.3
541,262.7
551,309.9
561,357.9
SideArea
571,406.9
581,456.7
591,507.3
601,558.8
611,611.2
621,664.5
631,718.6
641,773.6
651,829.5
661,886.2
671,943.8
682,002.3
692,061.6
702,121.8
712,182.8
722,244.7
732,307.5
742,371.2
752,435.7
762,501.1
772,567.3
782,634.4
792,702.4
802,771.3
812,841.0
822,911.6
832,983.0
843,055.3
853,128.5
863,202.6
873,277.5
883,353.3
893,429.9
903,507.4
913,585.8
923,665.0
933,745.1
943,826.1
953,907.9
963,990.6
974,074.2
984,158.7
994,244.0
1004,330.1
1054,774.0
1105,239.5
1155,726.6
1206,235.4
1256,765.8
1307,317.9
1357,891.7
1408,487.0
1459,104.1
1509,742.8
15510,403
16011,085
SideArea
16511,789
17012,514
17513,261
18014,030
18514,820
19015,632
19516,465
20017,321
20518,197
21019,096
21520,016
22020,958
22521,921
23022,906
23523,913
24024,942
24525,992
25027,063
25528,157
26029,272
26530,408
27031,567
27532,747
28033,948
28535,171
29036,416
29537,683
30038,971
30540,281
31041,613
31542,966
32044,341
32545,737
33047,155
33548,595
34050,056
34551,539
35053,044
35554,570
36056,118
36557,688
37059,279
37560,892
38062,527
38564,183
39065,861
39567,561
40069,282
40571,025
41072,789
41574,576
42076,383
42578,213
43080,064
43581,937
44083,831
SideArea
44585,747
45087,685
45589,644
46091,625
46593,628
47095,653
47597,698
48099,766
485101,855
490103,966
495106,099
500108,253
505110,429
510112,627
515114,846
520117,087
525119,349
530121,633
535123,939
540126,267
545128,616
550130,986
555133,379
560135,793
565138,228
570140,686
575143,165
580145,665
585148,188
590150,732
595153,297
600155,885
605158,493
610161,124
615163,776
620166,450
625169,146
630171,863
635174,602
640177,362
645180,144
650182,948
655185,773
660188,620
665191,489
670194,379
675197,291
680200,225
685203,180
690206,157
695209,156
700212,176
705215,218
710218,282
715221,367
720224,474
SideArea
725227,602
730230,752
735233,924
740237,118
745240,333
750243,570
755246,828
760250,108
765253,410
770256,733
775260,078
780263,445
785266,833
790270,243
795273,675
800277,128
805280,603
810284,100
815287,618
820291,158
825294,719
830298,302
835301,907
840305,534
845309,182
850312,852
855316,543
860320,256
865323,991
870327,747
875331,525
880335,325
885339,146
890342,989
895346,854
900350,740
905354,648
910358,578
915362,529
920366,502
925370,496
930374,513
935378,551
940382,610
945386,691
950390,794
955394,918
960399,065
965403,232
970407,422
975411,633
980415,865
985420,120
990424,396
995428,693
1,000433,013