International System of Units (SI) ndi njira yomwe imagwiritsidwa ntchito kwambiri poyeza kuchuluka kwa thupi. SI imagwiritsidwa ntchito m'maiko ambiri padziko lapansi komanso pafupifupi nthawi zonse mu sayansi.
Gome ili m'munsili limapereka chidziwitso pa mayunitsi 7 oyambira a SI: dzina ndi mayina ( ndi Chingerezi / Padziko Lonse), komanso mtengo woyezedwa.
| Dzina Unit | mayina | Mtengo woyezedwa | ||
| Engl. | Engl. | |||
| Chachiwiri | Chachiwiri | с | s | Time |
| Mitha | mita | м | m | Utali (kapena mtunda) |
| Kilogalamu | Kilogalamu | kg | kg | Kunenepa |
| Ampere | Ampere | А | A | Mphamvu zamagetsi |
| Kelvin | Kelvin | К | K | Thermodynamic kutentha |
| Mole | misa | misa | mol | Kuchuluka kwa zinthu |
| Candela | Makandulo | cd | cd | Mphamvu ya kuwala |
Zindikirani: Ngakhale dziko likugwiritsa ntchito njira yosiyana, ma coefficients ena amayikidwa pazinthu zake, kuwalola kuti atembenuzidwe ku mayunitsi a SI.