공학용 단위환산표
많은 분들께서 단위환산을 등한시 하시더군요.. 정말 중요한 문제일수록 단위환산이 큰 비중을 차지합니다.
길이
|
단위 |
mm |
cm |
m |
km |
in |
feet |
yard |
mile |
|
mm |
1 |
0.1 |
0.001 |
- |
0.03937 |
- |
- |
- |
|
cm |
10 |
1 |
0.01 |
- |
0.393701 |
0.032808 |
- |
- |
|
m |
1000 |
100 |
1 |
0.001 |
39.3701 |
3.28084 |
1.09361 |
- |
|
km |
- |
- |
1000 |
1 |
- |
3280.84 |
1093.61 |
0.621371 |
|
in |
25.4 |
2.54 |
- |
- |
1 |
0.083333 |
0.027778 |
- |
|
feet |
304.8 |
30.48 |
0.3048 |
- |
12 |
1 |
0.33333 |
- |
|
yard |
914.4 |
91.44 |
0.9144 |
0.000914 |
36 |
3 |
1 |
0.000568 |
|
mile |
- |
- |
1609.344 |
1.609344 |
- |
5280 |
1760 |
1 |
면적
|
단위 |
㎠ |
㎡ |
㎢ |
in² |
ft² |
yd² |
acre |
mile² |
|
㎠ |
1 |
0.0001 |
- |
0.155 |
0.001076 |
0.00012 |
- |
- |
|
㎡ |
10000 |
1 |
0.000001 |
1550 |
10.7639 |
1.19599 |
0.000247 |
- |
|
㎢ |
- |
1000000 |
1 |
- |
- |
- |
247.105 |
0.386102 |
|
in² |
6.4516 |
0.000645 |
- |
1 |
0.006944 |
0.000772 |
- |
- |
|
ft² |
929.03 |
0.092903 |
- |
144 |
1 |
0.111111 |
0.000023 |
- |
|
yd² |
8361.27 |
0.836127 |
- |
1296 |
9 |
1 |
0.000207 |
- |
|
acre |
- |
4046.86 |
0.004047 |
- |
43560 |
4840 |
1 |
0.001562 |
|
mile² |
- |
- |
2.589987 |
- |
- |
- |
640 |
1 |
|
단위 |
㎏ |
ton |
lb |
UK cwt |
UK ton |
US cwt |
US ton |
|
㎏ |
1 |
0.001 |
2.20462 |
0.019684 |
0.000984 |
0.022046 |
0.001102 |
|
ton |
1000 |
1 |
2204.62 |
19.6841 |
0.984207 |
22.0462 |
1.10231 |
|
lb |
0.453592 |
0.000454 |
1 |
0.008929 |
0.000446 |
0.01 |
0.0005 |
|
UK cwt |
50.8023 |
0.050802 |
112 |
1 |
0.05 |
1.12 |
0.056 |
|
UK ton |
1016.05 |
1.01605 |
2240 |
20 |
1 |
2204 |
1.12 |
|
US cwt |
45.3592 |
0.045359 |
100 |
0.892857 |
0.044643 |
1 |
|
|
US ton |
907.185 |
0.907185 |
2000 |
17.8571 |
0.892857 |
20 |
|
부피/용량
|
단위 |
㎤ |
㎥ |
ltrs(dm³) |
in³ |
ft³ |
yd³ |
UK pint |
UK gall |
US pint |
US gall |
|
㎤ |
1 |
- |
0.001 |
0.061024 |
0.0000353 |
- |
0.00176 |
0.00022 |
0.002113 |
0.000264 |
|
㎥ |
- |
1 |
1000 |
61023.7 |
35.3147 |
1.30795 |
1759.75 |
219.969 |
2113.38 |
264.172 |
|
ltrs(dm³) |
1000 |
0.001 |
1 |
61.0237 |
0.035315 |
0.001308 |
1.75975 |
0.219969 |
2.11338 |
0.264172 |
|
in³ |
16.3871 |
0.000016 |
0.016387 |
1 |
0.000579 |
0.0000214 |
0.028837 |
0.003605 |
0.034632 |
0.004172 |
|
ft³ |
28316.8 |
0.028317 |
28.3168 |
1728 |
1 |
0.037037 |
49.8307 |
6.22883 |
59.8442 |
7.48052 |
|
yd³ |
764555 |
0.764555 |
764.555 |
46656 |
27 |
1 |
1345.429 |
168.1784 |
1615.793 |
201.974 |
|
UK pint |
568.261 |
0.0005683 |
0.568261 |
34.6774 |
0.020068 |
0.000743 |
1 |
0.125 |
1.20095 |
0.150119 |
|
UK gall |
4546.09 |
0.0045461 |
4.54609 |
277.42 |
0.160544 |
0.005946 |
8 |
1 |
9.6076 |
1.20095 |
|
US pint |
473.176 |
0.0004732 |
0.473176 |
28.875 |
0.01671 |
0.000619 |
0.832674 |
0.104084 |
1 |
0.125 |
|
US gall |
3785.41 |
0.0037854 |
3.785411 |
231 |
0.133681 |
0.004951 |
6.661392 |
0.832674 |
8 |
1 |
부피/유속
|
단위 |
ltrs/sec |
ltrs/h |
㎥/sec |
㎥h |
cfm |
ft³/h |
UK gall/m |
UK gall/h |
US gall/m |
US gal/h |
|
ltrs/sec |
1 |
3600 |
0.001 |
3.6 |
2.118882 |
127.133 |
13.19814 |
791.8884 |
15.85032 |
951.019 |
|
ltrs/h |
0.000278 |
1 |
- |
0.001 |
0.00588 |
0.035315 |
0.003666 |
0.219969 |
0.004403 |
0.264172 |
|
㎥/sec |
1000 |
3600000 |
1 |
3600 |
2118.88 |
127133 |
13198.1 |
791889 |
1585 |
0.3951019 |
|
㎥h |
0.277778 |
1000 |
0.000278 |
1 |
0.588578 |
35.3147 |
3.66615 |
219.969 |
4.402863 |
264.1718 |
|
cfm |
0.471947 |
1699.017 |
0.000472 |
1.699017 |
1 |
60 |
6.228833 |
373.73 |
7.480517 |
448.831 |
|
ft³/h |
0.007866 |
28.3168 |
- |
0.028317 |
0.016667 |
1 |
0.103814 |
6.228833 |
0.124675 |
7.480517 |
|
UK gall/m |
0.075768 |
272.766 |
0.0000758 |
0.0272766 |
0.160544 |
9.63262 |
1 |
60 |
1.20095 |
72.057 |
|
UK gall/h |
0.001263 |
4.54609 |
- |
0.004546 |
0.002676 |
0.160544 |
0.016667 |
1 |
0.020016 |
1.20095 |
|
US gall/m |
0.06309 |
227.125 |
0.0000758 |
0.227125 |
0.133681 |
8.02832 |
0.832674 |
49.96045 |
1 |
60 |
|
US gal/h |
0.001052 |
3.785411 |
- |
0.003785 |
0.002228 |
0.133681 |
0.013878 |
0.832674 |
0.016667 |
1 |
압력
|
단위 |
atmos |
mmHg |
bar |
pascal |
inH₂O |
inHg |
psi |
㎏/㎠ |
|
atmos |
1 |
760 |
1.0132 |
101325 |
406.781 |
29.9213 |
14.6959 |
1.033 |
|
mmHg |
0.0013158 |
1 |
0.001333 |
133.322 |
0.53524 |
0.03937 |
0.019337 |
0.00136 |
|
bar |
0.9869 |
750.062 |
1 |
100000 |
401.463 |
29.53 |
14.504 |
1.01957 |
|
pascal |
0.0000099 |
0.007501 |
0.00001 |
1 |
0.004015 |
0.000295 |
0.000145 |
0.00001 |
|
inH₂O |
0.0024583 |
1.86832 |
0.002491 |
249.089 |
1 |
0.073556 |
0.036127 |
0.00254 |
|
inHg |
0.033421 |
25.4 |
0.033864 |
3386.391 |
3.5951 |
1 |
0.491154 |
0.003452 |
|
psi |
0.068046 |
51.7149 |
0.068948 |
6894.76 |
27.6799 |
2.03602 |
1 |
0.07029 |
|
㎏/㎠ |
0.968 |
7835.72 |
0.9808 |
98088 |
393.786 |
28.965 |
14.226 |
1 |
1 kgf/cm2 = 10,000 kgf/m²= 10 mH2O
1 MPa=10^6 N/m²= 101971.6 kgf/m2 = 10.19716 kgf/cm2
열
|
단위 |
Btu/h |
w |
㎉/h |
kw |
|
Btu/h |
1 |
0.293017 |
0.251996 |
0.000293 |
|
w |
3.41214 |
1 |
0.859845 |
0.001 |
|
㎉/h |
3.96832 |
1.163 |
1 |
0.001163 |
|
kw |
3462.14 |
1000 |
589.845 |
1 |
에너지
|
단위 |
Btu |
Therm |
J |
KJ |
㎈ |
|
Btu |
1 |
0.00001 |
1055.06 |
1.055 |
251.996 |
|
Therm |
100000 |
1 |
- |
105.5 |
25199.60 |
|
J |
0.00094 |
- |
1 |
0.001 |
0.2388 |
|
KJ |
0.9478 |
9.478E-06 |
1000 |
1 |
238.85 |
|
㎈ |
0.0039683 |
0.0039683x105 |
4.1868 |
- |
1 |
비열
|
단위 |
Btu/lb ℉ |
J/㎏℃ |
|
Btu/lb ℉ |
1 |
4186.8 |
|
J/㎏℃ |
0.00023 |
1 |
1㎉/㎏℃= 1 Btu/lb ℉
열용량
|
단위 |
Btu/lb |
J/㎏ |
|
Btu/lb |
1 |
2.326 |
|
J/㎏ |
0.4299 |
1 |
전열계수
|
단위 |
Btu/ft²h℉ |
w/㎡℃ |
㎉/㎡h℃ |
|
Btu/ft²h℉ |
1 |
5.67826 |
4.88243 |
|
w/㎡℃ |
0.17611 |
1 |
0.859845 |
|
㎉/㎡h℃ |
0.204816 |
1.163 |
1 |
전열속도
|
단위 |
Btu/ft²h |
w/㎡ |
㎉/㎡h |
|
Btu/ft²h |
1 |
3.154 |
2.712 |
|
w/㎡ |
0.3169 |
1 |
0.859 |
|
㎉/㎡h |
0.368 |
1.163 |
1 |
선속도
|
단위 |
ft/m |
ft/sec |
m/sec |
|
ft/m |
1 |
0.016666 |
0.00508 |
|
ft/sec |
m/sec 60 |
1 |
0.3048 |
|
m/sec |
196.85 |
3.28084 |
1 |
점도
|
단위 |
pa·s |
㎏f·s/㎡ |
g/cm·s(p) |
㎏m·h |
lbf·s/ft² | |||||
|
pa·s |
1 |
0.10197 |
10 |
3.6x10³ |
2.089x10² | |||||
|
㎏f·s/㎡ |
9.80665 |
1 |
98.07 |
3.53x10⁴ |
0.20481 | |||||
|
g/cm·s(p)
|