Rydberg constant = 10 973 731.568 157 m⁻¹

Name: Rydberg constant (R∞) — CODATA 2022 value
Creator: NIST

Symbol: R∞
Value: 10 973 731.568 157
Unit: m⁻¹
Uncertainty: 0.000 012
Copy-ready: 10973731.568157

Fixes the wavelengths of the hydrogen spectral lines; one of the most precisely measured constants in physics.

NIST, Fundamental Physical Constants — Complete Listing (2022 CODATA adjustment), retrieved 2026-07-26.

Atomic and electromagnetic constants

Fine-structure constant Inverse fine-structure constant Rydberg constant Bohr radius Compton wavelength (electron)Classical electron radius Bohr magneton Nuclear magneton

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UsePhysics. "Rydberg constant — 10 973 731.568 157 m⁻¹." UsePhysics.com. https://usephysics.com/reference/rydberg-constant. Value from the 2022 CODATA adjustment (NIST). Accessed [date].