Particle Size Calculator

Mesh Size	Microns	Inches	Millimeters	Nanometers
10	2000	0.0787	2	2,000,000
12	1680	0.0661	1.679	1,679,000
14	1410	0.0555	1.41	1,410,000
16	1190	0.0469	1.191	1,191,000
18	1000	0.0394	1.001	1,001,000
20	841	0.0331	0.841	841,000
25	707	0.0278	0.706	706,000
30	595	0.0234	0.594	594,000
35	500	0.0197	0.5	500,000
40	420	0.0165	0.419	419,000
45	354	0.0139	0.353	353,000
50	297	0.0117	0.297	297,000
60	250	0.0098	0.249	249,000
70	210	0.0083	0.211	211,000
80	177	0.007	0.178	178,000
100	149	0.0059	0.15	150,000
120	125	0.0049	0.125	125,000
140	105	0.0041	0.104	104,000
170	88	0.0035	0.089	89,000
200	74	0.0029	0.074	74,000
230	63	0.0025	0.064	64,000
270	53	0.0021	0.053	53,000
325	44	0.0017	0.044	44,000
400	37	0.001501	0.037	37,000
N.A.	20	N.M.	0.02	20,000
N.A.	10	N.M.	0.01	10,000
N.A.	1	N.M.	0.001	1,000
N.A.	0.9	N.M.	0.0009	900
N.A.	0.1	N.M.	0.0001	100
N.A.	0.05	N.M.	0.00005	50
N.A.	0.02	N.M.	0.00002	20
N.A.	0.01	N.M.	0.00001	10

Volume Reference Calculator

From / To	cm³	liter	m³	in³	ft³	yd³	fl oz	fl pt	fl qt	gal
cm³	1	0.001	1 x 10^-6	0.06102	3.53x10^-5	1.31x10^-6	0.03381	0.00211	0.00106	2.64x10^-4
liter	1000	1	0.001	61.02	0.03532	0.00131	33.81	2.113	1.057	0.2642
m³	1 x 10⁶	1000	1	6.10x10⁴	35.31	1.308	3.38x10⁴	2113	1057	264.2
in³	16.39	0.01639	1.64x10^-5	1	5.79x10^-4	2.14x10^-5	0.5541	0.03463	0.01732	0.00433
ft³	2.83x10⁴	28.32	0.02832	1728	1	0.03704	957.5	69.84	29.92	7.481
yd³	7.65x10⁵	764.5	0.7646	4.67x10⁴	27	1	2.59x10⁴	1616	807.9	202
fl oz	29.57	0.02957	2.96x10^-5	1.805	0.00104	3.87x10^-5	1	0.0625	0.03125	0.00781
fl pt	473.2	0.4732	473x10^-4	28.88	0.01671	619x10^-4	16	1	0.6	0.125
fl qt	946.4	0.9463	9.46x10^-4	57.75	0.03342	0.00124	32	2	1	0.25
gal	3785	3.786	0.00379	231	0.1337	0.00495	128	8	4	1

WEIGHT REFERENCE CALCULATOR

From / To	g	kg	metric ton	grain	oz	lb
g	1	0.001	1 x 10^-6	15.43	0.03527	0.0022
kg	1000	1	0.001	1.54 x 104	35.27	2.205
metric ton	1 x 10⁶	1000	1	1.54 x 10⁷	3.53 x 10⁴	2205
grain	6.48 x 10^-2	6.48 x 10^-5	6.48 x 10^-5	1	2.29 x 10^-3	1.43 x 10^-4
oz	28.35	0.02835	2.83 x 10^-5	437.5	1	0.0625
lb	453.6	0.4536	4.54 x 10⁴	7000	16	1

LENGTH REFERENCE CALCULATOR

From / To	cm	m	km	in	ft	mile
cm	1	0.01	1 x 10^-5	0.3937	0.03281	6.214 x 10^-6
m	100	1	0.001	39.37	3.281	6.214 x 10^-4
km	1 x 105	1000	1	3.94 x 104	3281	0.6214
in	2.54	0.0254	2.540 x 10^-5	1	0.08333	1.578 x10^-5
ft	30.48	0.3048	3.048 x 10-4	12	1	18.94 x 10^-4
mile	1.609 x 105	1609	1.609	6.336 x 104	5280	1

TEMPERATURE REFERENCE CALCULATOR

°C to °F	°F to °C
(°C x 9/5) + 32 = °F	(°F-32) x 5/9 = °C

FLOW RATE REFERENCE CALCULATOR

From / To	lit/sec	gal/min	ft³/sec	ft³/min	bbl/hr	bbl/day
lit/sec	1	15.85	2.23 x 10^-3	2.12	22.66	543.8
gal/min	6.31 x 10^-2	1	3.532 x 10^-2	0.13	1.43	34.3
ft³/sec	28.32	448.8	1	60	641.10	1.54 x 104
ft³/min	0.47	7.48	1.67 x 10-2	1	10.69	256.50
bbl/hr	4.42 x 10^-2	0.70	1.56 x 10^-3	9.36 x 10^-2	1	24
bbl/day	1.84 x 10^-3	2.917 x 10^-2	6.50 x 10^-5	3.90 x 10^-3	4.167 x 10^-2	1

UNITS OF MEASURE REFERENCE CALCULATOR

Percent	Parts per Million	Parts per Billion	Parts per Trillion
0.001%	10 ppm	-	-
0.0001%	1 ppm	1,000 ppb	1,000,000 ppt
0.00001%	.1 ppm	100 ppb	100,000 ppt
0.000001%	.01 ppm	10 ppb	10,000 ppt
-	.001 ppm	1 ppb	1,000 ppt
-	.0001 ppm	.1 ppb	100 ppt
-	-	.01 ppb	10 ppt
-	-	.001 ppb	1 ppt

FRACTIONS REFERENCE CALCULATOR

Prefix	Factor	Fraction
centi	10^-2	1/100 (part per hundred)
milli	10^-3	1/1,000 (part per thousand)
micro	10^-6	1/1,000,000 (ppm, part per million)
nano	10^-9	1/1,000,000,000 (ppb, part per billion)
pico	10^-12	1/1,000,000,000,000 (ppt, part per trillion)
femto	10^-15	1/1,000,000,000,000,000 (ppq, part per quadrillion)
atto	10^-18	1/1,000,000,000,000,000,000 (part per quintillion)

U.S. AND EUROPEAN RING SIZE CHART

US Size	Dia.in inch	Dia. in MM	British	French	German	Japanese	Swiss
0000	.390	9.91	-
00	.422	10.72	-
0	.454	11.53	-
1/2	.474	11.95	A
3/4	.482	12.18	A 1/2
1	.487	12.37	B			1
1 1/4	-	12.60	B 1/2
1 1/2	.503	12.78	C
1 3/4	-	13.00	C 1/2
2	.520	13.21	D	41 1/2	13 1/2	2	1 1/2
2 1/4	-	13.41	D 1/2	-	-
2 1/2	.536	13.61	E	42 3/4	13 3/4	3	2 3/4
2 3/4	-	13.83	E 1/2	-	-
3	.553	14.05	F	44	14	4	4
3 1/8	-	14.15	F 1/2	-	-
3 1/4	-	14.25	-	-	-
3 3/8	-	14.36	G	45 1/4	-	5	5 1/4
3 1/2	.569	14.45	-	-	14 1/2
3 5/8	-	14.56	G 1/2	-		6
3 3/4	-	14.65	H	46 1/2			6 1/2
4	.585	14.86	H 1/2	-	15	7
4 1/4	-	15.04	I	47 3/4			7 3/4
4 1/2	.601	15.27	I 1/2	-	15 1/4	8
4 5/8	-	15.40	J	49	15 1/2		9
4 3/4	-	15.53	-	-
5	.618	15.70	J 1/2	-	15 3/4	9
5 1/8	-	15.80	K	50			10
5 1/4	-	15.90	-	-
5 3/8	-	16.0	K 1/2	-		10
5 1/2	.634	16.10	L	51 3/4	16		11 3/4
5 3/4	-	16.30	-	-
5 7/8	-	16.41	L 1/2	-
6	.650	16.51	M	52 3/4	16 1/2	12	12 3/4
6 1/4	-	16.71	M 1/2	-
6 1/2	.666	16.92	N	54	17	13	14
6 3/4	-	17.13	N 1/2	-
7	.683	17.35	O	55 1/4	17 1/4	14	15 1/4
7 1/4	-	17.45	O 1/2	-
7 1/2	.699	17.75	P	56 1/2	17 3/4	15	16 1/2
7 3/4	-	17.97	P 1/2	-
8	.716	18.19	Q	57 3/4	18	16	17 3/4
8 1/4	-	18.35	Q 1/2	-
8 1/2	.732	18.53	-	-	18 1/2	17
8 5/8	-	18.61	R	59			19
8 3/4	-	18.69	-	-
8 7/8	-	18.80	R 1/2	-
9	.748	18.89	-	-	19	18
9 1/8	-	19.10	S	60 1/4			20 1/4
9 1/4	-	19.22	-	-
9 3/8	-	19.31	S 1/2	-
9 1/2	.764	19.41	-	-	19 1/2	19
9 5/8	-	19.51	T	61 1/2			21 1/2
9 3/4	-	19.62	-	-
10	.781	19.84	T 1/2	-	20	20
10 1/4	-	20.02	U	62 3/4		21	22 3/4
10 1/2	.797	20.20	U 1/2	-	20 1/4	22
10 5/8	-	20.32	V	63			23 3/4
10 3/4	-	20.44	-	-
11	.814	20.68	V 1/2	-	20 3/4	23
11 1/8	-	20.76	W	65			25
11 1/4	-	20.85	-	-
11 3/8	-	20.94	W 1/2	-
11 1/2	-	21.08	-	-	21	24
11 5/8	.830	21.18	X	66 1/4			26 1/4
11 3/4	-	21.24	-	-
11 7/8	-	21.30	X 1/2	-
12	.846	21.49	Y	67 1/2	21 1/4	25	27 1/2
12 1/4	-	21.69	Y 1/2	-
12 1/2	.862	21.89	Z	68 3/4	21 3/4	26	28 3/4
12 3/4	-	22.10	Z 1/2	-
13	.879	22.33	-	-	22	27

Printable Periodic Table