Conversion Factor Chain
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.
- Physical unit chains only; this tool does not infer unprovided density or other cross-dimension relationships.
Example Calculation
- Starting value: 36
- Unit chain: in, ft, yd, m
36 inches → 3 feet → 1 yard → 0.9144 metre.
Frequently asked questions
How do I use this calculator?
Enter starting value, unit chain. The result updates automatically. Use Reset to restore the example values.
What method does it use?
Multiply the starting value by each consecutive unit-factor ratio; intermediate units cancel.. Physical unit chains only; this tool does not infer unprovided density or other cross-dimension relationships.
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.