Convert plumbing pressure, flow, physical dimensions and temperature when comparing sanitary ware specifications. Choose the correct source and output units, including US or Imperial gallons, and keep the measurement context with the converted value.
For plumbers, sanitary ware buyers, installers and engineers. Choose a gallon definition, enter a number and use Swap to reverse the conversion.
A conversion is only useful when its unit and reference are retained. Copy both the entered and converted values into the product brief. Physical millimetres and inches describe measured length; nominal pipe-thread designations need their own connection record.
Calculations stay on your device. Specify US or Imperial GPM. mm / inch converts physical length, not nominal G, BSP, NPT or DN pipe sizes. Pressure conversion preserves the gauge or absolute reference of the input.
Unit conversion changes how a value is expressed. It does not establish product compatibility or an operating rating.
Only results you choose to add are saved with your selection in this browser for up to 90 days. Review My Enquiry
Choose the unit and decimal display you need, then copy the result or add it to your enquiry. The decimal setting controls the displayed precision.
| Units | Forward | Reverse |
|---|---|---|
| bar / psi | psi = bar × 100000 / 6894.757293168361 | bar = psi × 6894.757293168361 / 100000 |
| L/min / US GPM | GPM = L/min ÷ 3.785411784 | L/min = GPM × 3.785411784 |
| L/min / Imperial GPM | GPM = L/min ÷ 4.54609 | L/min = GPM × 4.54609 |
| mm / inch | inch = mm ÷ 25.4 | mm = inch × 25.4 |
| °C / °F | °F = °C × 9/5 + 32 | °C = (°F − 32) × 5/9 |
Use the same units and pressure reference when comparing product sheets. A converted number does not establish a product operating limit, flow rating or installation compatibility.
Factors follow the international inch, international pound, standard gravity, US liquid gallon and Imperial gallon definitions. See NIST unit conversion tables. The psi factor used here is derived from the defining pound, gravity and inch values rather than the shortened table display.
No. Physical length conversion does not determine nominal thread dimensions or compatibility. Use the thread designation and model drawing.
Both definitions are used. Choose the gallon definition in the calculator: one US liquid gallon is 3.785411784 litres, while one Imperial gallon is 4.54609 litres. State the definition when comparing flow specifications.
G1/2 is a nominal thread designation, not a direct physical-length conversion. Use the relevant thread standard, pitch, diameter and sealing arrangement to check compatibility. This calculator converts actual length only.
No. Unit conversion preserves the pressure reference of the input. Changing between gauge and absolute pressure requires separate information about the reference pressure.
Calculations run in your browser. If you choose Use in Enquiry, the result is saved with your product selection in this browser for up to 90 days. Calculation inputs are not sent to visitor analytics. Contact details and the quotation message are only shared when you choose a sending option.
The calculation engine and standalone browser tool are available under the MIT license. Reuse or inspect the code without an account.
After converting the units, use the selected model and configuration to review connections, controls and supplied components.
