HITRAN on the Web

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Scope

All users (unregistered and registered) may:

  • Survey the HITRAN database content for a specified spectral range
  • Specify a mixture of vibrational bands for a given HITRAN isotopologue for a selected wavenumber region
  • Specify a gas mixture from a set of built-in standard atmospheric concentration profiles for a selected wavenumber region
  • Visualize a stick intensity diagram of the specified mixture
  • Simulate one of built-in spectral functions (absorption coefficient profile, transmittance, absorption, or radiance) of the mixture spectrum convolved with one of built-in apparatus functions for various physical (temperature, pressure, pathlength) and simulation (intensity cutoff, contour shape, wing length, resolution, etc) conditions
  • Download simulation results in numerical and/or graphical format on user's computer.

Registered users may also:

  • Prepare user defined gas mixtures
  • Save simulation results on the server side
  • Upload user's spectra to the server side and compare them to simulated spectra from HITRAN data

The registration in the system is free. Just click the button "New user" in user logging form and fill in the form that appears.

Usage agreement

Users of the Hitran on the Web Information System agree to reference it in scientific publications, presentations and communications if the system is useful for their investigations.

Requirements

Cookies and javascript should be enabled in your browser for correct functioning of this web application.

Contacts

Other sites of the portal on molecular spectroscopy

News

22 February 2026

The spectral line  parameters correspond to the HITRAN2024 version.

11 January 2026

79th International Symposium on Molecular Spectroscopy will be held  in University of Illinois at Urbana-Champaign, USA from 22 to 26 June, 2026

5 January 2026

All-Russian conference with international participation on enviromental observations, modeling and information systems, ENVIROMIS 2026,  will be held in Novosibirsk, Russia from 29 June to 4 July, 2026

26 December 2025

The ASA-HITRAN 2026 will be held in Reims, France from 26 – 28 August 2026.

26 December 2025

The 27th International Conference on Spectral Line Shapes will be held at the Luleå University of Technology in Luleå, Sweden from 9 – 14 August 2026

More news