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Cv to Kv Conversion Table

Cv to Kv conversion table for control valve flow coefficients, both directions, for quick datasheet checks.

Excel (.xlsx)Print ready PDF28 rowsFree, no sign up

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Download Excel .xlsx · 8 KB Download PDF A4 · 37 KB
  • 28 rows of reference data
  • Print ready A4 PDF
  • How to Use sheet with steps
  • Basis and standard stated
  • Excel, Google Sheets and LibreOffice
  • Free, no sign up, no macros

Conversion in both directions

CvKvKvCv
0.010.0090.010.012
0.020.0170.020.023
0.050.0430.050.058
0.100.0870.100.116
0.200.1730.200.231
0.500.4320.500.578
10.8611.16
21.7322.31
32.5933.47
54.3355.78
7.56.497.58.67
108.651011.56
1512.971517.34
2017.302023.12
3025.953034.68
4034.604046.24
5043.255057.80
7564.887586.70
10086.50100115.60
150129.75150173.40
200173.00200231.20
300259.50300346.80
400346.00400462.40
500432.50500578.00
750648.75750867.00
1000865.0010001156.00
15001297.5015001734.00
20001730.0020002312.00
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About this Table

Cv to Kv conversion table for control valve flow coefficients, both directions, for quick datasheet checks.

Basis: Cv is US gallons per minute of water at 60 °F with 1 psi drop; Kv is m³/h of water at 5 to 40 °C with 1 bar drop. Kv = 0.865 Cv, Cv = 1.156 Kv (IEC 60534 1).

How to use

  1. Find the known coefficient in the first or third column.
  2. Read the converted value next to it.
  3. Liquid flow: Q (m³/h) = Kv × √(ΔP bar ÷ SG).

Notes

  • Coefficients scale linearly, so multiply for values between rows.
  • Valve sizing for gas and flashing liquids needs the full IEC 60534 equations.

Related tools

Cv Calculator (Liquid)Free on instrumentationblog.inFlow Coefficient CvFree on instrumentationblog.inKv Flow FactorFree on instrumentationblog.in
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Frequently Asked Questions

How do I convert Cv to Kv?

Multiply by 0.865.

How do I convert Kv to Cv?

Multiply by 1.156.

What is Cv 10 in Kv?

8.65.

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Control valve flow coefficient

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