Convert ksi to Decibars (ksi to dbar)

Formula

dbar = ksi × 689.4757293168

Derivation from SI units:

• 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
• 1 dbar = 10⁻¹ bar = 10⁴ Pa
• 1 ksi = 6894757.293168 Pa ÷ 10000 Pa per dbar = 689.4757293168 dbar

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

Worked examples

1. A reading of 20 ksi converts to 13789.51459 dbar.
   20 ksi × 689.4757293 = 13789.51459 dbar
2. A value of 65 ksi is 44815.92241 dbar.
   65 ksi × 689.4757293 = 44815.92241 dbar

Where it's used

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

ksi 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, "kip per square inch (ksi)".
• 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).

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