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Units of Measurement Chart
In the previous article, I have written about the fundamental and derived quantities, the different system of units, Importance of measurement etc in detail. If you are not aware of that topics consider first reading my complete article about the measurement of physical quantities.
This article focuses on the units of measurement chart which is very useful while measuring a quantity. The units of measurement charts are nothing but a collection of several charts which includes the multiples and submultiples chart, units conversion chart, length unit conversion chart, mass conversion chart, time conversion chart, volume conversion chart, area conversion chart, speed conversion chart, temperature conversion chart and some physical constants list.
By going through this article you will get a brief idea about the conversion between different units and you can learn the values of some important constants.
Multiples and Submultiples chart
The multiples and submultiples of units become useful for expressing the magnitudes of physical quantities which are either too large or too small in comparison to the unit. The multiples and submultiples of units with their prefixes and symbols are given in the below table.
|
Prefix Name |
Prefix Symbol |
Base 10 |
Decimal |
English Word |
| yotta | Y | 1,000,000,000,000,000,000,000,000 | 1024 | septillion |
| zetta | Z | 1,000,000,000,000,000,000,000 | 1021 | sextillion |
| exa | E | 1,000,000,000,000,000,000 | 1018 | quintillion |
| peta | P | 1,000,000,000,000,000 | 1015 | quadrillion |
| tera | T | 1,000,000,000,000 | 1012 | trillion |
| giga | G | 1,000,000,000 | 109 | billion |
| mega | M | 1,000,000 | 106 | million |
| kilo | k | 1,000 | 103 | thousand |
| hecto | h | 100 | 102 | hundred |
| deca | da | 10 | 101 | ten |
| 1 | 100 | one | ||
| deci | d | 0.1 | 10-1 | tenth |
| centi | c | 0.01 | 10-2 | hundredth |
| milli | m | 0.001 | 10-3 | thousandth |
| micro |  |
0.000,001 | 10-6 | millionth |
| nano | n | 0.000,000,001 | 10-9 | billionth |
| pico | p | 0.000,000,000,001 | 10-12 | trillionth |
| femto | f | 0.000,000,000,000,001 | 10-15 | quadrillionth |
| atto | a | 0.000,000,000,000,000,001 | 10-18 | quintillionth |
| zepto | z | 0.000,000,000,000,000,000,001 | 10-21 | sextillionth |
| yocto | y | 0.000,000,000,000,000,000,000,001 | 10-24 | septillionth |
Chart 1: Multiples & submultiples of units.
Units of measurement chart conversion
The units of measurement chart for some commonly used unit conversion are given below.
|
Quantity |
From |
To |
Operation |
|
Length |
inch (in) |
metre (m) |
(inch) x 0.0254 |
|
Mass |
pound (lb) |
kilogram (kg) |
(pound) x 0.4536 |
|
Volume |
litre (l) |
cubic metre (m3) |
(litre) x 0.001 |
|
Temperature |
fahrenheit (F) |
Kelvin (K) |
{(fahrenheit) – 32} x |
+ 273.15Chart 2: Units conversion chart.
For example, a length of 15 inches can be converted into its SI unit metre using the above table:
(15 inches) x 0.0254 = 0.381 metres.
Similarly, a temperature of 113 Fahrenheit can be converted to Kelvin using the above table:
(113°F − 32) × 5/9 + 273.15 = 318.15K
Now let us discuss each units conversion chart separately.
Length unit conversion chart
Given below is the units of measurement chart for length unit conversion where you can convert from one unit to other.
| Nano-metre (nm) |
Micro-metre (μm) |
Milli-metre (mm) |
Centi-metre (cm) |
Inch
(in) |
Feet
(ft) |
Yard
(yd) |
Metre
(m) |
Kilo-metre (km) |
Mile
(mi) |
Nautical mile (nmi) |
| 1 | 0.001 | 1e-6 | 1e-7 | 3.94e-8 | – | – | – | – | – | – |
| 1000 | 1 | 0.001 | 1e-4 | 3.94e-5 | – | – | – | – | – | – |
| 1e+6 | 1000 | 1 | 0.1 | 0.0394 | 0.00328 | 0.00109 | .001 | 0.000001 | 6.21e-07 | – |
| 1e+7 | 10000 | 10 | 1 | 0.3937 | 0.03281 | 0.01094 | 0.01 | 0.00001 | 0.000006 | – |
| – | – | 25.4 | 2.54 | 1 | 0.08333 | 0.02778 | 0.0254 | 0.000025 | 0.000016 | – |
| – | – | 304.8 | 30.48 | 12 | 1 | 0.33333 | 0.3048 | 0.000305 | 0.000189 | – |
| – | – | 914.4 | 91.44 | 36 | 3 | 1 | 0.9144 | 0.000914 | 0.000568 | 0.00049 |
| 1e+9 | 1e+6 | 1000 | 100 | 39.370 | 3.28084 | 1.09361 | 1 | 0.001 | 0.000621 | 0.00054 |
| – | – | 1000000 | 100000 | 39370.1 | 3280.84 | 1093.61 | 1000 | 1 | 0.621371 | 0.53996 |
| – | – | 1609344 | 160934.4 | 63360 | 5280 | 1760 | 1609.3 | 1.609344 | 1 | 0.86898 |
| – | – | – | 185200 | 72913.4 | 6076.12 | 2025.37 | 1852 | 1.852 | 1.15078 | 1 |
Chart 3: Length unit conversion chart
For example, a length of 185 feet can be converted into metre using the above table:
(185 feet) x 0.3048 = 56.388 metres.
Similarly, a length of 12 miles is equivalent to 21120 yards
(12 miles) x 1760 = 21120 yards.
Mass conversion chart
The unit conversion table for mass is given below. By using the below units of measurement chart, you can convert a quantity from one mass unit to other.
|
Microgram (μg) |
Milligram
(mg) |
Grams
(g) |
Ounces
(oz) |
Pounds
(lb) |
Kilograms
(kg) |
Stone
(st) |
Short ton /US ton
(shton) |
Metric tonne/ Tonne (t) |
Long ton /Imperial tonne (Lton) |
| 1 | 0.001 | 1e-6 | – | – | – | – | – | – | – |
| 1000 | 1 | 0.001 | 3.53e-5 | – | – | – | – | – | – |
| 1e+6 | 1000 | 1 | 0.03527 | 0.00221 | 0.001 | 0.00016 | 0.000001 | 0.000001 | 9.84e-07 |
| 28349500 | 28349.5 | 28 | 1 | 0.0625 | 0.02835 | 0.00446 | 0.000031 | 0.000028 | 0.000028 |
| 4.536e+8 | 453592 | 453.6 | 16 | 1 | 0.4536 | 0.07143 | 0.0005 | 0.000454 | 0.000446 |
| 1e+9 | 999999.2 | 1000 | 35.2734 | 2.20459 | 1 | 0.15747 | 0.001102 | 0.001 | 0.000984 |
| – | 6350290 | 6350.29 | 224 | 14 | 6.35029 | 1 | 0.007 | 0.006350 | 0.00625 |
| – | – | 907200 | 32000 | 2000 | 907.2 | 142.857 | 1 | 0.9072 | 0.892913 |
| – | – | 1000000 | 35273.4 | 2204.59 | 1000 | 157.473 | 1.102293 | 1 | 0.984252 |
| – | – | 1016000 | 35837.7 | 2239.86 | 1016 | 160 | 1.1199291 | 1.016 | 1 |
Chart 4: Mass conversion chart
For example, a mass of 2863 kilogram can be converted into metric tonne using the above table:
(2863 kg) x 0.001 = 2.863 tonne.
Similarly, a mass of 29 pounds is equivalent to 13154 grams.
(29 lb) x 453.6 = 13154 grams.
Time conversion chart
You can convert from one unit of time to other by using the time conversion chart given below.
| Nano-second | Micro-second | Milli-second | Seconds | Minutes | Hours | Days | Weeks | Month | Year | Decade | Century |
| 1 | 0.001 | 1e-6 | – | – | – | – | – | – | – | – | – |
| 1000 | 1 | 0.001 | 1e-6 | – | – | – | – | – | – | – | – |
| 1e+6 | 1000 | 1 | 0.001 | 1.67e-5 | – | – | – | – | – | – | – |
| 1e+9 | 1e+6 | 1000 | 1 | 0.01667 | 0.0003 | – | – | – | – | – | – |
| 6e+10 | 6e+7 | 60000 | 60 | 1 | 0.0167 | 0.0007 | – | – | – | – | – |
| – | 3.6e+9 | 3.6e+6 | 3600 | 60 | 1 | 0.0417 | 0.0059 | 0.001 | 0.0001 | – | – |
| – | – | 8.6e+7 | 86400 | 1440 | 24 | 1 | 0.1427 | 0.033 | 0.0027 | – | – |
| – | – | – | 604800 | 10080 | 168 | 7 | 1 | 0.230 | 0.0192 | – | – |
| – | – | – | 2.63e+6 | 43800 | 730.00 | 30.417 | 4.3452 | 1 | 0.0833 | 0.0083 | – |
| – | – | – | – | 525600 | 8760 | 365 | 52.143 | 12 | 1 | 0.1 | 0.01 |
| – | – | – | – | – | 87600 | 3650 | 521.43 | 120 | 10 | 1 | 0.1 |
| – | – | – | – | – | 876000 | 36500 | 5214.3 | 1200 | 100 | 10 | 1 |
Chart 5: Time conversion chart
For example, 4244 seconds can be converted to minutes using the above table
(4244 seconds) x 0.01667 = 70.74 minutes
Similarly, 20 decade is equivalent to 200 years.
(20 decades) x 10 = 200 years
(20 decades) x 120 = 2400 months.
Volume conversion chart
The units of measurement chart for volume unit conversion is given below where you can convert from one unit of volume to other.
| Cubic centimetre (cm3) |
Cubic inch (in3) |
Litre (ℓ) | US gallons (US gal) |
Imperial gallons (Imp. gal) |
Cubic foot (ft3) |
US barrel {oil} (US brl) | Cubic metre (m3) |
| 1 | 0.061024 | 0.001 | 0.000264 | 0.00022 | 0.000035 | 0.000006 | 0.000001 |
| 16.4 | 1 | 0.016387 | 0.004329 | 0.003605 | 0.000579 | 0.000103 | 0.000016 |
| 1000 | 61 | 1 | 0.264201 | 0.22 | 0.035 | 0.00629 | 0.001 |
| 3785 | 231 | 3.79 | 1 | 0.832701 | 0.13 | 0.02381 | 0.003785 |
| 4545 | 277 | 4.55 | 1.20 | 1 | 0.16 | 0.028593 | 0.004545 |
| 28317 | 1728 | 28.31685 | 7.481333 | 6.229712 | 1 | 0.178127 | 0.028317 |
| 158970 | 9701 | 159 | 42 | 35 | 6 | 1 | 0.15897 |
| 1000000 | 61024 | 1000 | 264 | 220 | 35 | 6.29 | 1 |
Chart 6: Volume conversion chart
For example, a volume of 38 litres can be converted into cubic feet using the above table:
(38 ℓ) x 0.035 = 1.33 ft3
Similarly, a volume of 19 cubic meters is equivalent to 19000 litres.
(19 m3) x 1000 = 19000 litres.
Area conversion chart
By using the units of measurement chart given below for area unit conversion, you can convert from one unit of area to another.
| Millimetre square (mm2) |
Centimetre square (cm2) |
Square inch (in2) |
Square foot (ft2) |
Square yard (yd2) |
Square metre (m2) |
Acre | Hectare | Square Kilometre (km2 ) |
Square mile (mi2 ) |
| 1 | 0.01 | 0.0016 | 0.000011 | 0.000001 | 0.000001 | – | – | – | – |
| 100 | 1 | 0.155 | 0.001076 | 0.00012 | 0.0001 | – | – | – | – |
| 645.16 | 6.4516 | 1 | 0.006944 | 0.000772 | 0.000645 | – | – | – | – |
| 92903 | 929.0304 | 144 | 1 | 0.111111 | 0.092903 | – | – | – | – |
| 836127 | 8361.274 | 1296 | 9 | 1 | 0.836127 | 0.00021 | – | – | – |
| 1000000 | 10000 | 1550 | 10.76391 | 1.19599 | 1 | 0.00025 | 1e-4 | 1e-6 | – |
| – | – | – | 43560 | 4840 | 4047.09 | 1 | 0.4047 | 0.004047 | 0.00156 |
| – | – | – | 107639.10 | 11959.9 | 10000 | 2.47105 | 1 | 0.01 | 0.00386 |
| – | – | – | 10763888.9 | 1195987.6 | 999000 | 247.1 | 100 | 1 | 0.38610 |
| – | – | – | 27881999.9 | 3097999.9 | 2590000 | 640.082 | 259 | 2.58999 | 1 |
Chart 7: Area conversion chart
For example, an area of 286 square feet can be converted into square metre using the above table:
(286 ft2) x 0.092903 = .26.570 m2
Similarly, an area of 23 hectares is equivalent to 56.834 acres.
(23 hectares) x 2.47105 = 56.834 acres.
Speed conversion chart
The units of measurement chart for speed conversion is given below, using which you can convert the speed of a body from one unit to other.
| Foot/minute (ft/min) | Metre/minute (m/min) | Kilometre/hour (km/h) | Foot/second (ft/s) | Miles/hour (mi/h) | Knot | Metre/second (m/s) |
| 1 | 0.304739 | 0.018287 | 0.016667 | 0.011365 | 0.009875 | 0.00508 |
| 3.281496 | 1 | 0.060007 | 0.054692 | 0.037293 | 0.032397 | 0.01667 |
| 54.68504 | 16.66467 | 1 | 0.911344 | 0.621371 | 0.539957 | 0.2778 |
| 60 | 18.28434 | 1.09728 | 1 | 0.681818 | 0.592484 | 0.3048 |
| 87.99213 | 26.81464 | 1.60934 | 1.46667 | 1 | 0.868976 | 0.44704 |
| 101.269 | 30.8667 | 1.852 | 1.68781 | 1.15078 | 1 | 0.514444 |
| 196.8504 | 60 | 3.600005 | 3.28084 | 2.23694 | 1.94384 | 1 |
Chart 8: Speed conversion chart
For example, 42 km/h of speed can be converted to Miles/hour using the above table
(42 km/h) x 0.621371 = 26.098 Miles/hour.
Similarly, 35 Metre/second is equivalent to 2100 Metre/minute.
(35 m/s) x 60 = 2100 m/min.
Temperature conversion chart
The units of measurement chart for temperature conversion is given below. The below formulas can be used to convert a value of temperature from degree Celsius to Fahrenheit or to Kelvin or vice-versa.
| Degree Celsius (°C) | Degree Fahrenheit (°F) | Kelvin (K) |
| °C | (°C x 9/5) + 32 | (°C + 273.15) |
| (°F – 32) x 5/9 | °F | {(°F – 32) x 5/9} + 273.15 |
| (K – 273.15) | {(K − 273.15) × 9/5} + 32 | K |
Chart 9: Temperature conversion chart
For example,
- 22°C = (22 x 9/5) + 32 = 39.6+32 = 71.6 °F
- 22°C = 22 + 273.15 = 295.15 K
- 68 °F = (68 – 32) x 5/9 = 36 x 5/9 = 20°C
- 68 °F = {(68 – 32) x 5/9} + 273.15 =20 + 273.15 = 293.15 K
- 285 K = (285 – 273.15) = 11.85 °C
- 285 K = {(285 − 273.15) × 9/5} + 32 = {11.85 × 9/5} + 32 = 53.33 °F
Physical constants list
The units of measurement chart given below contains some important physical constants list and their values and symbols.
| Sl. No | Name | Symbol | Value |
| 1. | The Speed of light in vacuum |  |
2.9979 x 108 ms-1 |
| 2. | Charge of electron |  |
1.602 x 10-19 C |
| 3. | Gravitational constant |  |
6.673 x 10-11 Nm2kg-2 |
| 4. | Planck constant |  |
6.626 x 10-34 Js |
| 5. | Boltzmann constant |  |
1.381 x 10-23 JK-1 |
| 6. | Avogadro number |  |
6.022 x 1023 mol-1 |
| 7. | Universal gas constant |  |
8.314 J mol-1 K-1 |
| 8. | Mass of electron |  |
9.110 x 10-31 kg |
| 9. | Mass of neutron |  |
1.675 x 10-27 kg |
| 10. | Mass of proton |  |
1.673 x 10-27 kg |
| 11. | Electron – charge to mass ratio |  |
1.759 x 1011 C/kg |
| 12. | Faraday constant |  |
9.648 x 104 C/mol |
| 13. | Rydberg constant | |
1.097 x 107 m-1 |
| 14. | Bohr radius |  |
5.292 x 10-11 m |
| 15. | Stefan-Boltzmann constant |  |
5.670 x 10-8 W m-2 K-4 |
| 16. | Wien’s constant |  |
2.898 x 10-3 m K |
| 17. | Permitivity of free space |   |
8.854 x 10-12 C2 N-1 m-2 8.987 x 109 N m2 C-2 |
| 18. | Permeability of free space |  |
4𝜋 x 10-7 T m A-1 ≅ 1.257 x 10-6 Wb A-1 m-1 |
| 19. | Mechanical equivalent of heat |  |
4.186 J cal-1 |
| 20. | Standard atmospheric pressure | 1 atm | 1.013 x 105 Pa |
| 21. | Absolute zero | 0 K | -273.15 oC |
| 22. | Electron volt | 1 eV | 1.602 x 10-19 J |
| 23. | Unified Atomic mass unit | 1 u | 1.661 x 10-27 kg |
| 24. | Electron rest energy | mc2 | 0.511 MeV |
| 25. | The energy equivalent of 1 u Volume of ideal gas(0 0C and 1 atm) |
1 u c2 V |
931.5 MeV 22.4 L mol-1 |
| 26. | Acceleration due to gravity (sea level, at the equator) |
 |
9.78049 m s-2 |
| 27. | 1 light year |  |
9.4607 × 1012 km |
| 28. | 1 horsepower | hp | 745.7 Watts |
Chart 10: Physical constants list
Another chart containing dimensional formulas for more than 100 physical quantities and their SI units are written in my previous article about the dimensions and dimensional formulas.
I hope the information in this article helps you to get a brief idea about the units of measurement chart. If you think I have missed any essential or helpful chart, do let me know in the comments section.
