Convert Decibars to Torr

Formula

Torr = dbar × 75.00616827042

Derivation from SI units:

• 1 dbar = 10⁻¹ bar = 10⁴ Pa
• 1 Torr = 101325/760 Pa = 133.3223684 Pa (1/760 of a standard atmosphere)
• 1 dbar = 10000 Pa ÷ 133.3223684211 Pa per Torr = 75.00616827042 Torr

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

Worked examples

1. A reading of 50 dbar converts to 3750.308414 Torr.
   50 dbar × 75.00616827 = 3750.308414 Torr
2. A value of 1000 dbar is 75006.16827 Torr.
   1000 dbar × 75.00616827 = 75006.16827 Torr

Where it's used

Decibars are used for oceanography: CTD instruments report sea pressure in dbar, while torr appear in vacuum technology and vacuum gauges. 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, "torr (Torr)".

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