Convert lengths, forces, torques, stresses, and other engineering quantities reliably between metric and US units.
100 mm = 3.93700787 in
Convert technical quantities through a central SI basis to keep calculators consistent.
Choose quantity type, input value, source unit, and target unit. Temperatures are treated as absolute values in K, °C, or °F; temperature intervals are outside this calculator's scope.
Units can be exchanged only within the same quantity type: pressure, force and energy are not interchangeable. For temperature, 20 °C absolute is not the same as a 20 K difference.
Values are converted to an internal SI unit and then to the selected unit; prefixes and temperature offsets are explicit.
1 bar = 100 kPa; 20 °C = 293.15 K.
Sources and limits: BIPM SI Brochure, 9th edition, and NIST Special Publication 811; conversion does not change a model assumption.
Convert technical quantities through a central SI basis to keep calculators consistent.
Unit conversion changes only the representation of the same physical quantity. Convert a number only after quantity type and reference state match.
Values are converted to an internal SI unit and then to the selected unit; prefixes and temperature offsets are explicit.
Choose quantity type, input value, source unit, and target unit. Temperatures are treated as absolute values in K, °C, or °F; temperature intervals are outside this calculator's scope. Units can be exchanged only within the same quantity type: pressure, force and energy are not interchangeable. For temperature, 20 °C absolute is not the same as a 20 K difference.
Choose the quantity type (e.g. pressure, force, energy), enter the source value with its unit, and select the target unit. For temperature, absolute temperature and temperature difference are handled separately.
1 bar = 100 kPa; 20 °C = 293.15 K.
Units can be exchanged only within the same quantity type: pressure, force and energy are not interchangeable. For temperature, 20 °C absolute is not the same as a 20 K difference. The result is equivalent to the input in another unit. Converting pressure to force or power to energy without additional quantities is not a valid unit conversion.
Depends on the chosen quantity type, e.g. Pa/kPa/bar/MPa for pressure or N/kN/lbf for force.
Quickly converting values from datasheets, standards or instruments using different unit systems, for example between bar and psi or between mm and inches.
BIPM SI Brochure, 9th edition, and NIST Special Publication 811; conversion does not change a model assumption.
Common mistake: Don't try to convert directly between different quantity types – pressure and force, for example, are linked only through an area (F = p·A) and are not a pure unit conversion. For temperature, don't equate 20 °C with 20 K; only temperature differences can be equated directly in kelvin and degrees Celsius.
A conversion like °C to K needs an offset (273.15), a temperature difference does not – a 20 °C difference equals exactly a 20 K difference, but 20 °C absolute equals 293.15 K.
Not directly, since they are different quantity types. Only multiplying by an area (F = p·A) gives a force; that is a separate calculation, not a unit conversion.
No, a correct unit conversion changes only the representation, not the physical value; every MINT and engineering calculator on this site computes consistently through SI units internally.
This tool uses the same central unit registry as the specialised calculators. Values pass through SI internally, with temperature offsets handled explicitly.
Use it to prepare catalogue data, drawing dimensions, and comparison calculations—for example lbf to N, ksi to MPa, or lbf·in to N·m. Unit conversion does not replace an engineering design check.