Conversion Tables

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Metric Conversion Chart

Symbol	When you know	Multiply by	To Find	Symbol
in	inches	25.4	millimeters	mm
mm	millimeters	0.039	inches	in
in	inches	2.54	centimeters	cm
cm	centimeters	0.394	inches	in
ft	feet	30.48	centimeters	cm
cm	centimeters	0.033	feet	ft
ft	feet	0.305	meters	m
m	meters	3.281	feet	ft
yd	yards	0.914	meters	m
m	meters	1.094	yards	yd
oz	ounces	28.35	grams	g
g	grams	0.035	ounces	oz
lb	pounds	0.454	kilograms	kg
kg	kilograms	2.205	pounds	lb

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Incandescent Colors and Temperatures

Color	°F	°C
Black Red	990	533
Dark Blood Red	1050	565
Dark Cherry Red	1175	634
Medium Cherry Red	1250	676
Full Cherry Red	1375	745
Light Cherry	1550	843
Salmon	1650	899
Light Salmon	1725	940
Yellow	1825	995
Light Yellow	1975	1078
White	2220	1203

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Colors of Tempering Heats

Color	°F	°C
Light Straw	430	222
Straw	450	232
Dark Straw	470	244
Yellow Brown	490	255
Dark Brown	510	265
Brown Purple	520	271
Dark Purple	530	277
Bright Purple	550	288
Full Blue	560	293
Dark Blue	600	316

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Hardness Testing Conversion Table

Rockwell C 120 Cone 150 Kg	Brinell 3000 Kg 10 MM Ball	Rockwell C 120 Cone 150 Kg	Brinell 3000 Kg 10 MM Ball
	156	32	302
	159	33	311
	163	34	321
	166	35	332
	170	36	340
	174	37	351
	179	39	364
	183	40	375
	187	41	387
	192	43	402
10	196	44	418
12	202	45	430
14	207	46	444
17	212	48	460
19	217	49	477
21	223	50	495
22	228	52	512
23	235	54	532
24	241	56	555
25	248	58	578
26	255	60	600
27	262	62	627
28	269	65	652
29	277	66	683
30	293	68	744
31	293	68	744