Amtgard Heater Shield Area Calculator

	A	B	C	H	J
1	Unit in Inches	Width	Height	Square Inches	Key

2	2.00	6.00	7.20	34.11	Small Shields = 36-432 Square Inches
3	2.05	6.15	7.38	35.84	Medium Shields = 432-720 Square Inches
4	2.10	6.30	7.56	37.61	Large Shields = 720-1152 Square Inches
5	2.15	6.45	7.74	39.42	Illegal Shields
6	2.20	6.60	7.92	41.27
7	2.25	6.75	8.10	43.17	The unit size for the calculation is determined by the measurement of the rectangle in the image below. It's size will be 1 unit high and 3 units wide.
8	2.30	6.90	8.28	45.11
9	2.35	7.05	8.46	47.09
10	2.40	7.20	8.64	49.12
11	2.45	7.35	8.82	51.19
12	2.50	7.50	9.00	53.30
13	2.55	7.65	9.18	55.45
14	2.60	7.80	9.35	57.65
15	2.65	7.95	9.53	59.89
16	2.70	8.10	9.71	62.17
17	2.75	8.25	9.89	64.49
18	2.80	8.40	10.07	66.86
19	2.85	8.55	10.25	69.27
20	2.90	8.70	10.43	71.72
21	2.95	8.85	10.61	74.21
22	3.00	9.00	10.79	76.75
23	3.05	9.15	10.97	79.33
24	3.10	9.30	11.15	81.95
25	3.15	9.45	11.33	84.62
26	3.20	9.60	11.51	87.32
27	3.25	9.75	11.69	90.07
28	3.30	9.90	11.87	92.87
29	3.35	10.05	12.05	95.70	Image from Wikipedia article on Heater Shields.
30	3.40	10.20	12.23	98.58
31	3.45	10.35	12.41	101.50
32	3.50	10.50	12.59	104.46
33	3.55	10.65	12.77	107.47
34	3.60	10.80	12.95	110.52
35	3.65	10.95	13.13	113.61
36	3.70	11.10	13.31	116.74
37	3.75	11.25	13.49	119.92
38	3.80	11.40	13.67	123.14
39	3.85	11.55	13.85	126.40
40	3.90	11.70	14.03	129.71
41	3.95	11.85	14.21	133.05
42	4.00	12.00	14.39	136.44
43	4.05	12.15	14.57	139.88
44	4.10	12.30	14.75	143.35
45	4.15	12.45	14.93	146.87
46	4.20	12.60	15.11	150.43
47	4.25	12.75	15.29	154.03
48	4.30	12.90	15.47	157.68
49	4.35	13.05	15.65	161.36
50	4.40	13.20	15.83	165.10
51	4.45	13.35	16.01	168.87
52	4.50	13.50	16.19	172.69
53	4.55	13.65	16.37	176.54
54	4.60	13.80	16.55	180.45
55	4.65	13.95	16.73	184.39
56	4.70	14.10	16.91	188.38
57	4.75	14.25	17.09	192.41
58	4.80	14.40	17.27	196.48
59	4.85	14.55	17.45	200.59
60	4.90	14.70	17.63	204.75
61	4.95	14.85	17.81	208.95
62	5.00	15.00	17.99	213.19
63	5.05	15.15	18.17	217.48
64	5.10	15.30	18.35	221.80
65	5.15	15.45	18.53	226.17
66	5.20	15.60	18.71	230.59
67	5.25	15.75	18.89	235.04
68	5.30	15.90	19.07	239.54
69	5.35	16.05	19.25	244.08
70	5.40	16.20	19.43	248.67
71	5.45	16.35	19.61	253.29
72	5.50	16.50	19.79	257.96
73	5.55	16.65	19.97	262.67
74	5.60	16.80	20.15	267.43
75	5.65	16.95	20.33	272.22
76	5.70	17.10	20.51	277.06
77	5.75	17.25	20.69	281.95
78	5.80	17.40	20.87	286.87
79	5.85	17.55	21.05	291.84
80	5.90	17.70	21.23	296.85
81	5.95	17.85	21.41	301.90
82	6.00	18.00	21.59	307.00
83	6.05	18.15	21.77	312.13
84	6.10	18.30	21.95	317.31
85	6.15	18.45	22.13	322.54
86	6.20	18.60	22.31	327.80
87	6.25	18.75	22.49	333.11
88	6.30	18.90	22.67	338.46
89	6.35	19.05	22.85	343.86
90	6.40	19.20	23.03	349.29
91	6.45	19.35	23.21	354.77
92	6.50	19.50	23.39	360.29
93	6.55	19.65	23.57	365.86
94	6.60	19.80	23.75	371.47
95	6.65	19.95	23.93	377.11
96	6.70	20.10	24.11	382.81
97	6.75	20.25	24.29	388.54
98	6.80	20.40	24.47	394.32
99	6.85	20.55	24.65	400.14
100	6.90	20.70	24.83	406.00