ISO 80000: Quantities and units
International standard defining physical quantities, their units, and mathematical relationships.
ISO 80000 is a series of international standards defining physical quantities, their units, symbols, and mathematical relationships. It covers space and time, mechanics, thermodynamics, electricity, and other physical quantities.
Key Formulas
Area of rectangle
Area of circle
Volume of cylinder
Reference Tables
SI base units
| Quantity | Unit | Symbol |
|---|---|---|
| Length | metre | m |
| Mass | kilogram | kg |
| Time | second | s |
| Electric current | ampere | A |
| Temperature | kelvin | K |
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Frequently Asked Questions
What is this standard used for?
This standard provides guidelines and requirements for specific calculations and design procedures in its field of application.
How do I apply this standard?
This page provides educational context about the standard. For actual design work, consult the official standard documents and qualified engineers. Our calculators can help with preliminary estimations, but they are not a substitute for professional design.