Choosing High-Impact Journals as a Thai Researcher

Want to find high impact factor journals in Thailand? Career moves and funding awards often turn on impact factors, quartiles and rankings, and such numbers are easy to misunderstand or fabricate. Inside you will learn what the main metrics mean, how to steer clear of fake impact factors, which Thailand-published journals report international indexing, and a staged method for finding the highest-impact journals in your area. It is aimed at researchers in Bangkok, Thailand; Nakhon Pathom (Salaya), Thailand; Pathum Thani, Thailand; Chiang Mai, Thailand.

What a High Impact Factor Actually Tells You

Describing a journal as “high impact” means its recent articles earn frequent citations on average, compared with other journals in the same field. Clarivate's Journal Impact Factor (JIF), released in Journal Citation Reports, is the most widely known measure, with CiteScore and the SCImago Journal Rank (SJR) from Scopus as alternatives. All of them rate the journal as a whole, not one article of yours, as researchers in Thailand should keep in mind.

Invented Impact Factors and Misleading Metrics

Many websites sell or give out “impact factors” that are not related to Clarivate's Journal Impact Factor. A journal that parades a big number from an unfamiliar service, or says it has a JIF but is not in the Master Journal List, is misleading you. Ask three things: which database, which year, and can the figure be seen on the database's own website?

Journals Published in Thailand That Are Indexed

ScienceAsia and the Chiang Mai Journal of Science (SCIE), together with Chulalongkorn’s Engineering Journal (ESCI), are Thai journals reporting Web of Science coverage; Thai journals are also graded by TCI, from Tier 1 to Tier 3.

What follows is the coverage each journal or publisher reported on 4 October 2026. Up-to-date values are in Journal Citation Reports for the Journal Impact Factor and quartile, and in Scopus Sources or SCImago for CiteScore or SJR. Always put a date on any metric you quote.

Online Journals and Platforms Available in Thailand

E-journals are now the usual format for journals in Thailand. The services below can help you locate them, compare them and confirm their standing:

• Thai-Journal Citation Index (TCI) — The national citation database of Thailand, which assesses Thai journals and places them into Tier 1, Tier 2 and Tier 3 during periodic rounds.
• ThaiJO (Thai Journals Online) — An online platform that hosts a large proportion of Thai journals and offers article search plus online submission.
• ASEAN Citation Index — A regional citation index for journals published in ASEAN countries, run by the TCI centre.
• Directory of Open Access Journals — Look up open access journals satisfying DOAJ’s criteria, narrowing the results by publisher country (Thailand) or by “without fees”.
• SCImago country rankings — Journal rankings built on Scopus, limited to titles published in Thailand and showing quartiles and SJR.
• ISSN Portal — Check a journal's ISSN, exact title and country of publication before you put your trust in it.

Being listed on a platform or in a directory does not automatically imply high impact or international indexing; verify each journal in the citation databases.

Locating Top-Tier Journals in Your Field

1. Find out which subject category your paper falls into, according to JCR and SCImago.
2. List that category's journals in JCR or SCImago and sort them by the metric your requirement specifies.
3. See whether your paper fits by reading three recent articles from every journal on your shortlist.
4. Check the current year's metric and quartile at the original source.
5. Before submitting, check the fees, open access options and any waivers.

Open Access, Costs and Impact

Many high-impact journals give open access in exchange for an article processing charge, a few are diamond open access, and numerous subscription journals levy no author fee. Open access widens readership, above all where libraries cannot afford subscriptions, but its impact on citations varies by field, so a large APC should not be paid for impact alone.

• Review the fee before shortlisting, with the metric and the fit.
• Find out about waivers: many publishers award them to authors from lower- and middle-income countries.
• Use self-archiving: if journal policy permits, deposit the accepted manuscript in a repository without charge.
• Consult your library to learn if an agreement with the publisher pays or reduces the APC for authors in Thailand.

A Practical Path to High-Impact Publication

Few researchers manage a first paper in a Q1 journal. The sensible route is staged: a well-prepared paper in a reputable national or regional outlet first, then indexed journals in your field, and top-tier journals at the end, once you have a record, collaborators and a study of clear international relevance.

• Build a stronger study: raise a clear question, select a sound design, collect an adequate sample and report completely.
• Give it an international angle: show what readers beyond Thailand can take from it.
• Partner with others who contribute expertise or data you do not have.
• Reply to reviewers in full — revision is part of the process for most high-impact papers.

Preparing to Submit to a Top-Tier Journal

1. Category correctThe journal's subject category is a good fit for your paper
2. Metric checkedJIF or quartile found in JCR or SCImago for this year
3. Suitability reviewedThree recent articles read; your paper would fit alongside them
4. Costs confirmedAPC, waivers and open access options clear
5. Fallback readyA trustworthy second-choice journal chosen ahead of time

Thai Researchers: Strengthening a Manuscript Before Submission

Thai authors often have strong data but spend less time on presentation. These reminders concentrate on the writing and review stage, where careful preparation can noticeably improve a paper's reception.

• Read the manuscript aloud. Reading aloud exposes awkward sentences and missing links in the argument. Fix each place where you stumble, because reviewers will stumble there too.
• Use plain, direct sentences. Short sentences with one idea each translate well and avoid misunderstanding. Reserve complex phrasing for points that genuinely need it.
• Check that conclusions match the evidence. Compare every claim in your discussion with a specific result. Remove statements that go beyond your data, as overreach is a frequent reason for criticism.
• Run a similarity check. Use a similarity checking tool on your draft and review every flagged passage. Paraphrase or quote and cite properly so that overlap reflects only legitimate sources.
• Prepare a response template early. Create a simple document for answering reviewer comments before they arrive. Having a format ready makes revision faster and your replies more organised.

Polish the text, align conclusions with evidence and check similarity before sending, so reviewers can concentrate on your science.

Questions Researchers Often Ask

Summary and What to Do Next

Publishing high-impact work from Thailand is realistic when you have the right paper, the right journal and an honest reading of the metrics. Check each number at its source, select by fit within your category, and grow your record gradually. Bookmark the sources you trust so rechecking before each submission takes only a few minutes.

1. Work out your subject category and requirement.
2. Compile a candidate list of journals through JCR or SCImago, then go through some of their recent articles.
3. Confirm metrics and fees before submitting.
4. You can also read about journals in Thailand covered by Scopus and Web of Science and about affordable journal publishing in Thailand.

References and Sources

Checked on 4 October 2026. Metrics are updated every year, so confirm them at the original source.

• Journal Citation Reports
• SCImago journal rankings — Thailand
• Scopus Sources
• Clarivate Master Journal List
• Thai-Journal Citation Index Centre
• ASEAN Citation Index
• CASRAI — TCI tiers explained