Answer: It is SI multiple of weight and mass unit kilogram .
Symbol : Gg
So As 1 gigagrams = 1000000 kilogram.
Let us look at an Example : 65 gigagrams = 1000000 X 65 kilograms.
Or we can say, 65 Gg = 65000000 kg.
Compare one Gigagrams with other weight units
| 350262697.02277 rebahs | 1102.3113109244 short-tons |
| 5710.1471301634 slinches | 68521.765561961 slugs |
| 157473.04441777 stones | 0.001 teragrams |
| 78736.522208885 tods | 32150746.361894 troy-ounces |
| 2679228.8778477 troy-pounds | 39368.261104442 trusses |
| 1.0E+33 yoctograms | 1.0E-15 yottagrams |
| 1.0E+30 zeptograms | 1.0E-12 zettagrams |
| 6.0240963855422E+32 avograms | 22046.226218488 centals |
| 100000000000 centigrams | 371.39928394218 chaldrons |
| 314960.62992126 cloves | 11123470522.803 criths |
| 6.0240963855422E+32 daltons | 10000000000 decigrams |
| 10000 decitonnes | 100000000 dekagrams |
| 100 dekatonnes | 263157894.73684 drachmes |
| 270512195907.1 drams | 100000000000 dynes |
| 1.0977693108051E+36 electrons | 6.25E+24 electronvolts |
| 1.0E-9 exagrams | 1.0E+24 femtograms |
| 28818.443804035 flasks | 1.0E+15 gammas |
| 1 gigagrams | 1.0E-6 gigatonnes |
| 15432098765.432 grains | 1000000000 grams |
| 261506276.15063 groses | 10000000 hectograms |
| 101971.62129779 hyls | 5.2631578947368E-22 jupiters |
| 1000000 kilos | 6.0221366516752E+29 kilodaltons |
| 1000000 kilograms | 101971.62129779 kilograms-force |
| 1 kilotonnes | 224.80894387096 kips |
| 984.20652741733 long-tons | 6.0240963855422E+26 megadaltons |
| 1000 megagrams | 0.001 megatonnes |
| 2143392.9911049 mercantile-pounds | 1000 metric-tons |
| 1.0E+15 mics | 1.0E+15 micrograms |
| 6.0240963855422E+35 millidaltons | 1000 millers |
| 1000000000000 milligrams | 6.0240963855422E+35 millimass-units |
| 100000 myriagrams | 1.0E+18 nanograms |
| 1000000 newtons | 35273962.105112 ounces |
| 3596943.1019354 ounces-force | 1.0E-6 petagrams |
| 1.0E+21 picograms | 5092958.1750334 points |
| 2204622.6218488 pounds | 224808.94387096 pounds-force |
| 629892.17767108 quarterns | 551155.65546219 quarterns-loaf |
Use the following list of links to quickly convert values from gigagrams to other commonly used Weight measurement units.