Calculators
Flow Measurement Calculators
DP meters, open channel flow, gas conversions, pressure drop and meter sizing. Every tool shows the formula, a worked example and the standard it is based on.
All Flow Measurement Tools
Orifice Plate Flow Calculator (ISO 5167)ISO 5167-2, Liquid and gasPipe Flow Velocity CalculatorNPS Sch 40 and 80, Flow to velocityReynolds Number CalculatorLaminar or turbulent, Velocity or flowFlow Meter K Factor CalculatorFrequency to rate, Pulses to totalOrifice Plate Bore Sizing CalculatorISO 5167-2, Bore and β ratioVenturi Tube Flow CalculatorISO 5167-4, Liquid and gasPitot Tube Velocity CalculatorDynamic pressure, VelocityWeir Flow CalculatorV notch, RectangularParshall Flume Flow CalculatorParshall flume, Free flowManning Equation Open Channel CalculatorManning n, Rectangular channelStandard to Actual Gas Flow CalculatorNm³/h, Sm³/hGas Density Calculatorρ = PM/ZRT, Molecular weightMass Flow to Volume Flow Calculatorkg/h to m³/h, m³/h to kg/hPipe Pressure Drop CalculatorDarcy Weisbach, Friction factorFlow Meter Turndown Ratio CalculatorTurndown ratio, DP metersMagnetic Flow Meter Sizing CalculatorDN 10 to DN 600, Velocity checkFlow Meter Straight Pipe Run CalculatorUpstream D, Downstream DFlow Totalizer and Fill Time CalculatorTotal volume, Fill timeFlow Rate Unit Converterm³/h, GPM, L/min, CFM
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Frequently Asked Questions
Are these flow measurement calculators free?
Yes. All calculators on instrumentationblog.in are free, run in your browser and need no sign up.
How accurate are the flow measurement calculators?
Each tool follows the published standard or textbook equation for its topic, shows the formula and the calculation steps, and has been checked against worked examples. Always confirm critical designs against the relevant standard and manufacturer data.
More Calculator Categories
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