Square feet per hour to Square millimeters per second converter (thermal diffusivity)
Convert Square feet per hour (ft²/h) to Square millimeters per second (mm²/s) for thermal diffusivity. Check the formula and worked example.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Value | Enter value using the definition in the method and example. |
| From | Select the unit or currency in which the entered number is currently expressed. |
| To | Select the unit or currency you need for the answer. |
Understanding your result
The converted value describes the same thermal diffusivity quantity in the selected target unit. Display rounding does not add precision to the original measurement.
Common mistakes
- Confusing the source and target units, or overlooking a prefix or case-sensitive symbol.
Check your calculation
- Convert to the target unit and then reverse the direction. Within display rounding, you should recover the original value.
Read the thermal diffusivity measurement guide · Calculation checks, sources and review limits
How do I convert Square feet per hour to Square millimeters per second?
Enter the known measurement and select its source and target units. The converter expresses the same thermal diffusivity quantity in the target unit, using the stated definitions.
Common uses
- Compare measurements stated in different units.
- Translate a known value before using it in a formula or specification.
How it works
Convert through the shared base quantity using the two defined factors. Thermal diffusivity has the same dimensions as kinematic viscosity but describes heat diffusion rather than fluid momentum diffusion. Conversion changes the unit of a known measurement; it does not calculate another physical quantity or imply a material model. Factors with π or repeating rational values use finite precision; results display up to 12 significant digits.
Worked example
10 ft²/h equals approximately 258.064 mm²/s. Reverse the units to convert in the other direction.
Common values
Use “Swap units” above for the reverse conversion. Values below are rounded to six significant digits.
| Square feet per hour | Square millimeters per second |
|---|---|
| 1 | 25.8064 |
| 5 | 129.032 |
| 10 | 258.064 |
| 20 | 516.128 |
| 30 | 774.192 |
| 50 | 1290.32 |
| 100 | 2580.64 |