Oct 2025
Conversion tables
Conversion table for units of force
| |
N |
p |
kp |
dyn |
| 1 Newton = 1 N |
1 |
102 |
0.102 |
105 |
| 1 pond = 1 p |
9.81·10-3 |
1 |
10-3 |
981 |
| 1 Kilopond = kp |
9.81 |
1000 |
1 |
9.81·105 |
| 1 dyn |
10-5 |
1.02·10-3 |
1.02·10-6 |
1 |
Conversion table for units of mechanical stress:
| |
Pa |
N/mm² |
kp/cm² |
kp/mm² |
| 1 Pa = 1 N/m² = 10 N/cm² |
1 |
10-6 |
1,02·10-5 |
1,02·10-7 |
| 1 N/mm² = 1 MPa |
106 |
1 |
10,2 |
0,102 |
| 1 kp/cm² = 1 at |
9,81·104 |
9,81·10-2 |
1 |
10-2 |
| 1 kp/mm² |
9,81·106 |
9,81 |
100 |
1 |
Conversion table for units of work, energy and heat:
| |
J |
kJ |
kWh |
kcal |
kpm |
| 1 J = 1 N·m = 1 W·s |
1 |
10-3 |
2.78·10-7 |
2.39·10-4 |
0.102 |
| 1 kJ |
1000 |
1 |
2.78·10-4 |
0.239 |
102 |
| 1 kWh |
3.6·106 |
3.6.103 |
1 |
860 |
3.67·105 |
| 1 kcal |
4.19·103 |
4.19 |
1.16·10-3 |
1 |
427 |
| 1 kpm |
9.81 |
9.81·10-3 |
2.72·10-6 |
2.34·10-3 |
1 |
Conversion table for units of power and heat flow:
| |
W |
kW |
kcal/s |
kcal/h |
kpm/s |
| 1 W = 1 N·m/s = 1 J/s |
1 |
10-3 |
2.39·10-4 |
0.860 |
0.102 |
| 1 kW |
1000 |
1 |
0.239 |
860 |
102 |
| 1 kcal/s |
4.9·103 |
4.19 |
1 |
3.6·103 |
427 |
| 1 kcal/h |
1.16 |
1.16·10-3 |
2.78·10-4 |
1 |
0.119 |
| 1 kpm/s |
9.81 |
9.81·10-3 |
2.34·10-3 |
8.34 |
1 |
Conversion table for units of pressure for gases, vapours and liquids
| |
Pa |
bar |
kp/m² |
at |
Torr |
| 1 Pa = 1 N/m² |
1 |
10-5 |
0.102 |
1.02·10-5 |
7.5·10-3 |
| 1 bar = 0.1 MPa = 0.1 N/mm² |
105 |
1 |
1.02·104 |
1.02 |
750 |
| 1 kp/m² |
9.81 |
9.81·10-5 |
1 |
10-4 |
7.36·10-2 |
| 1 at = 1 kp/cm² |
9.81·104 |
0.981 |
104 |
1 |
736 |
| 1 Torr = 1/760 atm |
133 |
1.33·10-3 |
13.6 |
1.36·10-3 |
1 |
Conversion of the units into SI units:
| Value |
Previous unit |
Symbol |
New unit |
Symbol |
Defining equation |
| Length | Ångström | Å | Meter | m | 1 Å = 10-10 m |
| Pressure | mm mercury | mm Hg | Pascal | Pa | 1 mm Hg = 133,3 Pa |
| Energy | Erg | erg | Joule | J | 1 erg = 10-7 J |
| Power | horsepower | PS | Watt | W | 1 PS = 735,5 W |
| Dynamic viscosity | Poise | P | Pascal Second | Pa·s | 1 P = 0,1 Pa·s = 1/c P = 1 m Pa·s |
| Kinematic viscosity | Stokes | St | Cm2/s | – | 1 St = 1 cm2/s = 10-4 m2/s |
| Impact value | kpm/cm2 | – | J/cm2 | – | 1 kpm/cm2 = 9,087 J/cm2 |
| Heat capacity | kcal/°C | – | J/K | – | 1 kcal/°C = 4,187·103 J/K |
| Heat conductivity | kcal/m·h·°C | – | W/K·m | – | 1 kcal/m·h·°C = 1,163 W/K·m |
| Specific heat | kcal/kg·°C | – | J/kg·K | – | 1 kcal/kg·°C = 4,187·103 J/kg·K |
| Magnetic field strength | Oersted | Oe | Ampere/meter | A/m | 1 Oe = 79,6 A/m |
| Magnetic flux density | Gauss | G | Tesla | T | 1 G = 10-4 T |
| Magnetic flux | Maxwell | M | Weber | Wb | 1 M = 10-8 Wb |
| Luminous intensity | internat. candle | IK | Candela | cd | 1 IK = 1,019 cd |
| Luminance | Stilb | sb | Cd/m2 | – | 1 sb = 104 cd/m2 |
| Absorbed dose | Rem | rem | J/kg | – | 1 rem = 0,01 J/kg |
| Ion dose | Röntgen | R | C/kg | – | 1 R = 2,58·10-4 C/kg |
Conversion tables imperial to metric :
Measures of length:
| Metric |
|
Imperial |
|
| 1 millimeter | mm | 0.03937 | inches in. |
| 1 centimeter | cm | 0.39370 | inches in. |
| 1 meter | m | 39.3700 | inches in. |
| 3.2808 | feet ft. |
| 1.0936 | yards yd. |
| 1 kilometer | km | 0.62137 | miles m. |
| Imperial | Metric |
|---|
| 1 inch | 25.400 mm |
| 2.540 cm |
| 1 foot | 304.800 mm |
| 30.480 cm |
| 0.3048 m |
| 1 yard | 91.4400 cm |
| 0.9144 m |
| 1 mile | 1609.35 m |
| 1.609 km |
Measures of area:
| Metric |
Imperial |
|
| 1 mm2 |
0.00155 |
sq.inches sq.in. |
| 1 cm2 |
0.1550 |
sq.inches sq.in. |
| 1 m2 |
10.7640 |
sq.feet sq.ft. |
| 1.196 |
sq.yard sq.yd. |
| 1 km2 |
0.38614 |
sq.miles sq.m. |
| Imperial |
Metric |
| 1 sq.inch |
645.16 mm2 |
| 6.4516 cm2 |
| 1 sq.foot |
929.00 cm2 |
| 1 sq.yard |
0.836 m2 |
| 1 sq.mile |
2.5889 km2 |
Measures of Capacity:
| Metric |
|
Imperial |
|
| 1 milliliter |
ml |
0.27 fluid drachms |
dr.fl. |
| 1 centiliter |
cl |
0.338 fluid ounces |
oz.fl. |
| 1 deziliter |
dl |
0.0528 pints |
pt. |
| 1 liter |
l |
1.0567 quarts |
qt. |
| 0.26 gallons |
gal. |
| 1 hectoliter |
hl |
26.417 gallons |
gal. |
| Imperial |
Metric |
|
| 1 fluid ounce |
2.957 |
cl |
| 1 pint |
4.732 |
dl |
| 0.4732 |
l |
| 1 quart |
0.9463 |
l |
| 1 gallon |
3.7853 |
l |
| 1 barrel (bl) |
119.237 |
l |
| 1.192 |
hl |
Weights:
| Metric |
|
Imperial | |
| 1 gram |
gr. |
15.432 grains |
gr. |
| 1 kilogram |
kg |
2.2046 pounds |
lb. |
| 1 quintal |
dz. |
220.46 pounds |
lb. |
| 1 tonne |
t |
2204.6 pounds |
lb. |
| 1.102 shorttons |
tn.sh. |
| Imperial |
Metric |
|
| 1 grain |
64.7989 |
mg |
| 1 ounce |
28.35 |
g |
| 1 pound |
0.4536 |
kg |
| 1 short |
907.200 |
kg |
|
9.072 |
dz. |
|
0.9072 |
t |
Temperature
Conversion from Fahrenheit into Celsius: Subtract 32; divide result by 1.8
| °F |
°C |
°F |
°C |
| 212 | 100 | 100 | 37.8 |
| 200 | 93.3 | 90 | 32.2 |
| 194 | 90 | 86 | 30 |
| 190 | 87.8 | 80 | 26.7 |
| 180 | 82.8 | 70 | 21.1 |
| 176 | 80 | 68 | 20 |
| 170 | 76.7 | 60 | 15 |
| 160 | 71.1 | 50 | 10 |
| 158 | 70 | 40 | 4.4 |
| 150 | 65.6 | – | – |
| 140 | 60 | 32 | 0 |
| 130 | 54.4 | 30 | –1.1 |
| 122 | 50 | 20 | –6.7 |
| 120 | 48.9 | 14 | –10 |
| 110 | 43.3 | 10 | –12.2 |
| 104 | 40 | 0 | –17.8 |
Conversion from Celsius into Fahrenheit: Multiply by 1.8; add 32 to result
| °C |
°F |
°C |
°F |
| 100 | 212 | 35 | 95 |
| 95 | 203 | 30 | 86 |
| 90 | 194 | 25 | 77 |
| 85 | 182 | 20 | 68 |
| 80 | 176 | 15 | 59 |
| 75 | 167 | 10 | 50 |
| 70 | 158 | 5 | 41 |
| 65 | 149 | – | – |
| 60 | 140 | 0 | 32 |
| 55 | 131 | -5 | 23 |
| 50 | 122 | -10 | 14 |
| 45 | 113 | -15 | 5 |
| 40 | 104 | -17.8 | 0 |