read the result
Units are part of the calculation.
Most simple formulas assume a consistent unit system. Convert first, then keep the input and output units next to the result so a later reader can reconstruct the check.
Conversion relationship
The tool converts an input to the SI base unit using the source factor, then divides by the target factor. No engineering assumption is added by the conversion itself.
Keep the formula context.
- Check whether a formula expects force, mass, weight, pressure, or stress before converting.
- Do not mix millimetres and metres inside a second-moment or deflection formula without converting the powers of length.
- Round only for display; keep full precision in the working calculation where it matters.