Convert Decibars to ksi (dbar to ksi)

Formula

ksi = dbar × 0.001450377377302

or ksi = dbar ÷ 689.4757293168

Derivation from SI units:

• 1 dbar = 10⁻¹ bar = 10⁴ Pa
• 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
• 1 dbar = 10000 Pa ÷ 6894757.293168 Pa per ksi = 0.001450377377302 ksi

Both units are defined exactly, so the factor is exact. Decibar definition: decibar; ksi definition: ksi.

Worked examples

1. A reading of 50 dbar converts to 0.07251886887 ksi.
   50 dbar × 0.001450377377 = 0.07251886887 ksi
2. A value of 1000 dbar is 1.450377377 ksi.
   1000 dbar × 0.001450377377 = 1.450377377 ksi

Where it's used

Decibars are used for oceanography: CTD instruments report sea pressure in dbar, while ksi appear in yield and tensile strength in ASTM and ASME material specifications. Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.

Decibar to other pressure units

Frequently asked questions

Sources

• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "bar", with SI prefix deci (10⁻¹).
• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "kip per square inch (ksi)".

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.