Convert millilitre/minute to centilitre/second

Millilitre/minute and Centilitre/second both are the units of volume flow rate. SI Derived Unit of volume flow rate is cubic meter/second.

Millilitre/minute is not the default SI Derived Unit of volume flow rate category.

Millilitre/minute Symbol is mL/min and alternate name for this unit is millilitres/minute.
Centilitre/second Symbol is and alternate name for this unit is centilitres/second.

Scale Factor of Millilitre/minute as compare to SI Derived Unit cubic meter/second is 1.66666666667E-8 and scale factor of Centilitre/second as compare to SI Derived Unit cubic meter/second is 1.0E-5.

To convert centilitre/second to millilitre/minute following formula will be used:

Millilitre/minute = 0.00166666666667 centilitre/second

Millilitre/minute ↔ Centilitre/second Conversion Table
1 Millilitre/minute = 0.00166666666667 centilitre/second
2 Millilitre/minute = 0.00333333333334 centilitre/second
3 Millilitre/minute = 0.00500000000001 centilitre/second
4 Millilitre/minute = 0.00666666666668 centilitre/second
5 Millilitre/minute = 0.00833333333335 centilitre/second
6 Millilitre/minute = 0.01000000000002 centilitre/second
7 Millilitre/minute = 0.01166666666669 centilitre/second
8 Millilitre/minute = 0.01333333333336 centilitre/second
9 Millilitre/minute = 0.01500000000003 centilitre/second
10 Millilitre/minute = 0.0166666666667 centilitre/second
11 Millilitre/minute = 0.01833333333337 centilitre/second
12 Millilitre/minute = 0.02000000000004 centilitre/second
13 Millilitre/minute = 0.02166666666671 centilitre/second
14 Millilitre/minute = 0.02333333333338 centilitre/second
15 Millilitre/minute = 0.02500000000005 centilitre/second
16 Millilitre/minute = 0.02666666666672 centilitre/second
17 Millilitre/minute = 0.02833333333339 centilitre/second
18 Millilitre/minute = 0.03000000000006 centilitre/second
19 Millilitre/minute = 0.03166666666673 centilitre/second
20 Millilitre/minute = 0.0333333333334 centilitre/second
21 Millilitre/minute = 0.03500000000007 centilitre/second
22 Millilitre/minute = 0.03666666666674 centilitre/second
23 Millilitre/minute = 0.03833333333341 centilitre/second
24 Millilitre/minute = 0.04000000000008 centilitre/second
25 Millilitre/minute = 0.04166666666675 centilitre/second
26 Millilitre/minute = 0.04333333333342 centilitre/second
27 Millilitre/minute = 0.04500000000009 centilitre/second
28 Millilitre/minute = 0.04666666666676 centilitre/second
29 Millilitre/minute = 0.04833333333343 centilitre/second
30 Millilitre/minute = 0.0500000000001 centilitre/second
31 Millilitre/minute = 0.05166666666677 centilitre/second
32 Millilitre/minute = 0.05333333333344 centilitre/second
33 Millilitre/minute = 0.05500000000011 centilitre/second
34 Millilitre/minute = 0.05666666666678 centilitre/second
35 Millilitre/minute = 0.05833333333345 centilitre/second
36 Millilitre/minute = 0.06000000000012 centilitre/second
37 Millilitre/minute = 0.06166666666679 centilitre/second
38 Millilitre/minute = 0.06333333333346 centilitre/second
39 Millilitre/minute = 0.06500000000013 centilitre/second
40 Millilitre/minute = 0.0666666666668 centilitre/second
41 Millilitre/minute = 0.06833333333347 centilitre/second
42 Millilitre/minute = 0.07000000000014 centilitre/second
43 Millilitre/minute = 0.07166666666681 centilitre/second
44 Millilitre/minute = 0.07333333333348 centilitre/second
45 Millilitre/minute = 0.07500000000015 centilitre/second
46 Millilitre/minute = 0.07666666666682 centilitre/second
47 Millilitre/minute = 0.07833333333349 centilitre/second
48 Millilitre/minute = 0.08000000000016 centilitre/second
49 Millilitre/minute = 0.08166666666683 centilitre/second
50 Millilitre/minute = 0.0833333333335 centilitre/second

Millilitre/minute Conversion Table:

Conversion of Millilitre/minute to other volume flow rate Units.

millilitre/minute	Other Units	Converter
1 millilitre/minute =	1.1674269967375E-6 acre foot/day	Millilitre/minute to Acre Foot/day
1 millilitre/minute =	1.1674199930647E-6 acre foot/day [survey]	Millilitre/minute to Acre Foot/day [survey]
1 millilitre/minute =	4.8642791530841E-8 acre foot/hour	Millilitre/minute to Acre Foot/hour
1 millilitre/minute =	4.8642499710918E-8 acre foot/hour [survey]	Millilitre/minute to Acre Foot/hour [survey]
1 millilitre/minute =	8.1071319217831E-10 acre foot/minute	Millilitre/minute to Acre Foot/minute
1 millilitre/minute =	8.1070832851529E-10 acre foot/minute [survey]	Millilitre/minute to Acre Foot/minute [survey]
1 millilitre/minute =	1.3511886536327E-11 acre foot/second	Millilitre/minute to Acre Foot/second
1 millilitre/minute =	1.3511805475255E-11 acre foot/second [survey]	Millilitre/minute to Acre Foot/second [survey]
1 millilitre/minute =	1.400912396081E-5 acre inch/day	Millilitre/minute to Acre Inch/day
1 millilitre/minute =	1.4009039916757E-5 acre inch/day [survey]	Millilitre/minute to Acre Inch/day [survey]
1 millilitre/minute =	5.8371349836873E-7 acre inch/hour	Millilitre/minute to Acre Inch/hour
1 millilitre/minute =	5.8370999653033E-7 acre inch/hour [survey]	Millilitre/minute to Acre Inch/hour [survey]
1 millilitre/minute =	9.7285583061681E-9 acre inch/minute	Millilitre/minute to Acre Inch/minute
1 millilitre/minute =	9.7284999421835E-9 acre inch/minute [survey]	Millilitre/minute to Acre Inch/minute [survey]
1 millilitre/minute =	1.6214263843645E-10 acre inch/second	Millilitre/minute to Acre Inch/second
1 millilitre/minute =	1.6214166570306E-10 acre inch/second [survey]	Millilitre/minute to Acre Inch/second [survey]
1 millilitre/minute =	0.0090573274711627 barrel/day [petroleum]	Millilitre/minute to Barrel/day [petroleum]
1 millilitre/minute =	0.0087987699319656 barrel/day [UK]	Millilitre/minute to Barrel/day [UK]
1 millilitre/minute =	0.012271217864115 barrel/day [US beer/wine]	Millilitre/minute to Barrel/day [US Beer/wine]
1 millilitre/minute =	0.012076436628239 barrel/day [US]	Millilitre/minute to Barrel/day [US]
1 millilitre/minute =	0.00037738864463127 barrel/hour [petroleum]	Millilitre/minute to Barrel/hour [petroleum]
1 millilitre/minute =	0.00036661541383255 barrel/hour [UK]	Millilitre/minute to Barrel/hour [UK]
1 millilitre/minute =	0.0005113007443397 barrel/hour [US beer/wine]	Millilitre/minute to Barrel/hour [US Beer/wine]
1 millilitre/minute =	0.00050318485950874 barrel/hour [US]	Millilitre/minute to Barrel/hour [US]
1 millilitre/minute =	6.2898107438592E-6 barrel/minute [petroleum]	Millilitre/minute to Barrel/minute [petroleum]
1 millilitre/minute =	6.1102568972091E-6 barrel/minute [UK]	Millilitre/minute to Barrel/minute [UK]
1 millilitre/minute =	8.5216790723109E-6 barrel/minute [US beer/wine]	Millilitre/minute to Barrel/minute [US Beer/wine]
1 millilitre/minute =	8.3864143251456E-6 barrel/minute [US]	Millilitre/minute to Barrel/minute [US]
1 millilitre/minute =	1.0483017906432E-7 barrel/second [petroleum]	Millilitre/minute to Barrel/second [petroleum]
1 millilitre/minute =	1.0183761495349E-7 barrel/second [UK]	Millilitre/minute to Barrel/second [UK]
1 millilitre/minute =	1.4202798453876E-7 barrel/second [US beer/wine]	Millilitre/minute to Barrel/second [US Beer/wine]
1 millilitre/minute =	1.3977357208576E-7 barrel/second [US]	Millilitre/minute to Barrel/second [US]
1 millilitre/minute =	5.0853119346368E-11 billion cubic foot/day	Millilitre/minute to Billion Cubic Foot/day
1 millilitre/minute =	2.1188799727648E-12 billion cubic foot/hour	Millilitre/minute to Billion Cubic Foot/hour
1 millilitre/minute =	3.5314666212732E-14 billion cubic foot/minute	Millilitre/minute to Billion Cubic Foot/minute
1 millilitre/minute =	5.885777702122E-16 billion cubic foot/second	Millilitre/minute to Billion Cubic Foot/second
1 millilitre/minute =	143.99999999997 centilitre/day	Millilitre/minute to Centilitre/day
1 millilitre/minute =	6.0000000000072 centilitre/hour	Millilitre/minute to Centilitre/hour
1 millilitre/minute =	0.1 centilitre/minute	Millilitre/minute to Centilitre/minute
1 millilitre/minute =	0.00166666666667 centilitre/second	Millilitre/minute to Centilitre/second
1 millilitre/minute =	3.4547437197666E-13 cubem/day	Millilitre/minute to Cubem/day
1 millilitre/minute =	1.4394765499032E-14 cubem/hour	Millilitre/minute to Cubem/hour
1 millilitre/minute =	2.3991275831686E-16 cubem/minute	Millilitre/minute to Cubem/minute
1 millilitre/minute =	3.9985459719496E-18 cubem/second	Millilitre/minute to Cubem/second
1 millilitre/minute =	1439.9999999997 cubic centimetre/day	Millilitre/minute to Cubic Centimetre/day
1 millilitre/minute =	60.000000000072 cubic centimetre/hour	Millilitre/minute to Cubic Centimetre/hour
1 millilitre/minute =	1 cubic centimetre/minute	Millilitre/minute to Cubic Centimetre/minute
1 millilitre/minute =	0.0166666666667 cubic centimetre/second	Millilitre/minute to Cubic Centimetre/second
1 millilitre/minute =	1.4399999999997 cubic decimetre/day	Millilitre/minute to Cubic Decimetre/day
1 millilitre/minute =	0.060000000000072 cubic decimetre/hour	Millilitre/minute to Cubic Decimetre/hour
1 millilitre/minute =	0.001 cubic decimetre/minute	Millilitre/minute to Cubic Decimetre/minute
1 millilitre/minute =	1.66666666667E-5 cubic decimetre/second	Millilitre/minute to Cubic Decimetre/second
1 millilitre/minute =	1.4399999999997E-6 cubic dekametre/day	Millilitre/minute to Cubic Dekametre/day
1 millilitre/minute =	6.0000000000072E-8 cubic dekametre/hour	Millilitre/minute to Cubic Dekametre/hour
1 millilitre/minute =	1.0E-9 cubic dekametre/minute	Millilitre/minute to Cubic Dekametre/minute
1 millilitre/minute =	1.66666666667E-11 cubic dekametre/second	Millilitre/minute to Cubic Dekametre/second
1 millilitre/minute =	0.050853119346368 cubic foot/day	Millilitre/minute to Cubic Foot/day
1 millilitre/minute =	0.0021188799727648 cubic foot/hour	Millilitre/minute to Cubic Foot/hour
1 millilitre/minute =	3.5314666212732E-5 cubic foot/minute	Millilitre/minute to Cubic Foot/minute
1 millilitre/minute =	5.885777702122E-7 cubic foot/second	Millilitre/minute to Cubic Foot/second
1 millilitre/minute =	87.874190230632 cubic inch/day	Millilitre/minute to Cubic Inch/day
1 millilitre/minute =	3.661424592935 cubic inch/hour	Millilitre/minute to Cubic Inch/hour
1 millilitre/minute =	0.061023743215493 cubic inch/minute	Millilitre/minute to Cubic Inch/minute
1 millilitre/minute =	0.0010170623869274 cubic inch/second	Millilitre/minute to Cubic Inch/second
1 millilitre/minute =	1.4399999999997E-12 cubic kilometre/day	Millilitre/minute to Cubic Kilometre/day
1 millilitre/minute =	6.0000000000072E-14 cubic kilometre/hour	Millilitre/minute to Cubic Kilometre/hour
1 millilitre/minute =	1.0E-15 cubic kilometre/minute	Millilitre/minute to Cubic Kilometre/minute
1 millilitre/minute =	1.66666666667E-17 cubic kilometre/second	Millilitre/minute to Cubic Kilometre/second
1 millilitre/minute =	0.0014399999999997 cubic metre/day	Millilitre/minute to Cubic Metre/day
1 millilitre/minute =	6.0000000000072E-5 cubic metre/hour	Millilitre/minute to Cubic Metre/hour
1 millilitre/minute =	1.0E-6 cubic metre/minute	Millilitre/minute to Cubic Metre/minute
1 millilitre/minute =	1.66666666667E-8 cubic meter/second	Millilitre/minute to Cubic Meter/second
1 millilitre/minute =	3.4547437197666E-13 cubic mile/day	Millilitre/minute to Cubic Mile/day
1 millilitre/minute =	1.4394765499032E-14 cubic mile/hour	Millilitre/minute to Cubic Mile/hour
1 millilitre/minute =	2.3991275831686E-16 cubic mile/minute	Millilitre/minute to Cubic Mile/minute
1 millilitre/minute =	3.9985459719496E-18 cubic mile/second	Millilitre/minute to Cubic Mile/second
1 millilitre/minute =	1439999.9999997 cubic millimetre/day	Millilitre/minute to Cubic Millimetre/day
1 millilitre/minute =	60000.000000072 cubic millimetre/hour	Millilitre/minute to Cubic Millimetre/hour
1 millilitre/minute =	1000 cubic millimetre/minute	Millilitre/minute to Cubic Millimetre/minute
1 millilitre/minute =	16.6666666667 cubic millimetre/second	Millilitre/minute to Cubic Millimetre/second
1 millilitre/minute =	0.001883448864679 cubic yard/day	Millilitre/minute to Cubic Yard/day
1 millilitre/minute =	7.8477036028293E-5 cubic yard/hour	Millilitre/minute to Cubic Yard/hour
1 millilitre/minute =	1.3079506004716E-6 cubic yard/minute	Millilitre/minute to Cubic Yard/minute
1 millilitre/minute =	2.1799176674526E-8 cubic yard/second	Millilitre/minute to Cubic Yard/second
1 millilitre/minute =	5.885777702122E-7 cusec	Millilitre/minute to Cusec
1 millilitre/minute =	14.399999999997 decilitre/day	Millilitre/minute to Decilitre/day
1 millilitre/minute =	0.60000000000072 decilitre/hour	Millilitre/minute to Decilitre/hour
1 millilitre/minute =	0.01 decilitre/minute	Millilitre/minute to Decilitre/minute
1 millilitre/minute =	0.000166666666667 decilitre/second	Millilitre/minute to Decilitre/second
1 millilitre/minute =	0.14399999999997 dekalitre/day	Millilitre/minute to Dekalitre/day
1 millilitre/minute =	0.0060000000000072 dekalitre/hour	Millilitre/minute to Dekalitre/hour
1 millilitre/minute =	0.0001 dekalitre/minute	Millilitre/minute to Dekalitre/minute
1 millilitre/minute =	1.66666666667E-6 dekalitre/second	Millilitre/minute to Dekalitre/second
1 millilitre/minute =	0.31675571755136 gallon/day [UK]	Millilitre/minute to Gallon/day [UK]
1 millilitre/minute =	0.38040775378838 gallon/day [US]	Millilitre/minute to Gallon/day [US]
1 millilitre/minute =	0.013198154897948 gallon/hour [UK]	Millilitre/minute to Gallon/hour [UK]
1 millilitre/minute =	0.015850323074492 gallon/hour [US]	Millilitre/minute to Gallon/hour [US]
1 millilitre/minute =	0.00021996924829943 gallon/minute [UK]	Millilitre/minute to Gallon/minute [UK]
1 millilitre/minute =	0.00026417205124195 gallon/minute [US]	Millilitre/minute to Gallon/minute [US]
1 millilitre/minute =	3.6661541383255E-6 gallon/second [UK]	Millilitre/minute to Gallon/second [UK]
1 millilitre/minute =	4.4028675207014E-6 gallon/second [US]	Millilitre/minute to Gallon/second [US]
1 millilitre/minute =	1.0E-10 hectare meter/minute	Millilitre/minute to Hectare Meter/minute
1 millilitre/minute =	1.4399999999997E-7 hectare metre/day	Millilitre/minute to Hectare Metre/day
1 millilitre/minute =	6.0000000000072E-9 hectare metre/hour	Millilitre/minute to Hectare Metre/hour
1 millilitre/minute =	1.66666666667E-12 hectare metre/second	Millilitre/minute to Hectare Metre/second
1 millilitre/minute =	0.014399999999997 hectolitre/day	Millilitre/minute to Hectolitre/day
1 millilitre/minute =	0.00060000000000072 hectolitre/hour	Millilitre/minute to Hectolitre/hour
1 millilitre/minute =	1.0E-5 hectolitre/minute	Millilitre/minute to Hectolitre/minute
1 millilitre/minute =	1.66666666667E-7 hectolitre/second	Millilitre/minute to Hectolitre/second
1 millilitre/minute =	0.0014399999999997 kilolitre/day	Millilitre/minute to Kilolitre/day
1 millilitre/minute =	6.0000000000072E-5 kilolitre/hour	Millilitre/minute to Kilolitre/hour
1 millilitre/minute =	1.0E-6 kilolitre/minute	Millilitre/minute to Kilolitre/minute
1 millilitre/minute =	1.66666666667E-8 kilolitre/second	Millilitre/minute to Kilolitre/second
1 millilitre/minute =	1439999.9999997 lambda/day	Millilitre/minute to Lambda/day
1 millilitre/minute =	60000.000000072 lambda/hour	Millilitre/minute to Lambda/hour
1 millilitre/minute =	1000 lambda/minute	Millilitre/minute to Lambda/minute
1 millilitre/minute =	16.6666666667 lambda/second	Millilitre/minute to Lambda/second
1 millilitre/minute =	1.4399999999997 litre/day	Millilitre/minute to Litre/day
1 millilitre/minute =	0.060000000000072 litre/hour	Millilitre/minute to Litre/hour
1 millilitre/minute =	0.001 litre/minute	Millilitre/minute to Litre/minute
1 millilitre/minute =	1.66666666667E-5 litre/second	Millilitre/minute to Litre/second
1 millilitre/minute =	1439.9999999997 millilitre/day	Millilitre/minute to Millilitre/day
1 millilitre/minute =	60.000000000072 millilitre/hour	Millilitre/minute to Millilitre/hour
1 millilitre/minute =	0.0166666666667 millilitre/second	Millilitre/minute to Millilitre/second
1 millilitre/minute =	1.1674269967375E-12 million acre foot/day	Millilitre/minute to Million Acre Foot/day
1 millilitre/minute =	4.8642791530841E-14 million acre foot/hour	Millilitre/minute to Million Acre Foot/hour
1 millilitre/minute =	8.1071319217831E-16 million acre foot/minute	Millilitre/minute to Million Acre Foot/minute
1 millilitre/minute =	1.3511886536327E-17 million acre foot/second	Millilitre/minute to Million Acre Foot/second
1 millilitre/minute =	5.0853119346368E-8 million cubic foot/day	Millilitre/minute to Million Cubic Foot/day
1 millilitre/minute =	2.1188799727648E-9 million cubic foot/hour	Millilitre/minute to Million Cubic Foot/hour
1 millilitre/minute =	3.5314666212732E-11 million cubic foot/minute	Millilitre/minute to Million Cubic Foot/minute
1 millilitre/minute =	5.885777702122E-13 million cubic foot/second	Millilitre/minute to Million Cubic Foot/second
1 millilitre/minute =	3.1675571755136E-7 million gallon/day [UK]	Millilitre/minute to Million Gallon/day [UK]
1 millilitre/minute =	3.8040775378838E-7 million gallon/day [US]	Millilitre/minute to Million Gallon/day [US]
1 millilitre/minute =	1.3198154897948E-8 million gallon/hour [UK]	Millilitre/minute to Million Gallon/hour [UK]
1 millilitre/minute =	1.5850323074492E-8 million gallon/hour [US]	Millilitre/minute to Million Gallon/hour [US]
1 millilitre/minute =	2.1996924829943E-10 million gallon/minute [UK]	Millilitre/minute to Million Gallon/minute [UK]
1 millilitre/minute =	2.6417205124195E-10 million gallon/minute [US]	Millilitre/minute to Million Gallon/minute [US]
1 millilitre/minute =	3.6661541383255E-12 million gallon/second [UK]	Millilitre/minute to Million Gallon/second [UK]
1 millilitre/minute =	4.4028675207014E-12 million gallon/second [US]	Millilitre/minute to Million Gallon/second [US]
1 millilitre/minute =	2.3543110808488E-5 miner's inch [AZ/ CA/ OR]	Millilitre/minute to Miner's Inch [AZ/ CA/ OR]
1 millilitre/minute =	2.2601386376148E-5 miner's inch [CO]	Millilitre/minute to Miner's Inch [CO]
1 millilitre/minute =	2.935245013801E-5 miner's inch [ID/ WA/ NM]	Millilitre/minute to Miner's Inch [ID/ WA/ NM]
1 millilitre/minute =	50.680914808257 ounce/day [UK]	Millilitre/minute to Ounce/day [UK]
1 millilitre/minute =	48.692192484935 ounce/day [US]	Millilitre/minute to Ounce/day [US]
1 millilitre/minute =	2.1117047836758 ounce/hour [UK]	Millilitre/minute to Ounce/hour [UK]
1 millilitre/minute =	2.028841353539 ounce/hour [US]	Millilitre/minute to Ounce/hour [US]
1 millilitre/minute =	0.0351950797279 ounce/minute [UK]	Millilitre/minute to Ounce/minute [UK]
1 millilitre/minute =	0.03381402255901 ounce/minute [US]	Millilitre/minute to Ounce/minute [US]
1 millilitre/minute =	0.00058658466213207 ounce/second [UK]	Millilitre/minute to Ounce/second [UK]
1 millilitre/minute =	0.00056356704264979 ounce/second [US]	Millilitre/minute to Ounce/second [US]
1 millilitre/minute =	0.00030820072331093 petrograd standard/day	Millilitre/minute to Petrograd Standard/day
1 millilitre/minute =	1.284169680463E-5 petrograd standard/hour	Millilitre/minute to Petrograd Standard/hour
1 millilitre/minute =	2.1402828007716E-7 petrograd standard/minute	Millilitre/minute to Petrograd Standard/minute
1 millilitre/minute =	3.5671380012861E-9 petrograd standard/second	Millilitre/minute to Petrograd Standard/second
1 millilitre/minute =	1.5216310212001 quart/day	Millilitre/minute to Quart/day
1 millilitre/minute =	0.063401292646477 quart/hour	Millilitre/minute to Quart/hour
1 millilitre/minute =	0.0010566882094347 quart/minute	Millilitre/minute to Quart/minute
1 millilitre/minute =	1.7611470157245E-5 quart/second	Millilitre/minute to Quart/second
1 millilitre/minute =	0.0014399999999997 stere/day	Millilitre/minute to Stere/day
1 millilitre/minute =	6.0000000000072E-5 stere/hour	Millilitre/minute to Stere/hour
1 millilitre/minute =	1.0E-6 stere/minute	Millilitre/minute to Stere/minute
1 millilitre/minute =	1.66666666667E-8 stere/second	Millilitre/minute to Stere/second
1 millilitre/minute =	5.0853119346368E-5 thousand cubic foot/day	Millilitre/minute to Thousand Cubic Foot/day
1 millilitre/minute =	2.1188799727648E-6 thousand cubic foot/hour	Millilitre/minute to Thousand Cubic Foot/hour
1 millilitre/minute =	3.5314666212732E-8 thousand cubic foot/minute	Millilitre/minute to Thousand Cubic Foot/minute
1 millilitre/minute =	5.885777702122E-10 thousand cubic foot/second	Millilitre/minute to Thousand Cubic Foot/second
1 millilitre/minute =	5.0853119346368E-14 trillion cubic foot/day	Millilitre/minute to Trillion Cubic Foot/day
1 millilitre/minute =	2.1188799727648E-15 trillion cubic foot/hour	Millilitre/minute to Trillion Cubic Foot/hour
1 millilitre/minute =	3.5314666212732E-17 trillion cubic foot/minute	Millilitre/minute to Trillion Cubic Foot/minute
1 millilitre/minute =	5.885777702122E-19 trillion cubic foot/second	Millilitre/minute to Trillion Cubic Foot/second