CGS and SI Converter
Convert with explicit units, definitions and assumptions.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Mechanical CGS quantities only; electromagnetic CGS conventions require a separate model.
Example Calculation
- Value: 1
- Quantity: force: dyn ↔ N
- Direction: CGS to SI
1 dyne equals 0.00001 newton.
Method references
Frequently asked questions
How do I use this calculator?
Enter value, quantity, direction. The result updates automatically. Use Reset to restore the example values.
What method does it use?
Apply the CGS-to-SI factor for the selected physical quantity.. Mechanical CGS quantities only; electromagnetic CGS conventions require a separate model.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.