How Long Does Peer Review Take?

There is no single answer to how long peer review takes: the honest range runs from about two weeks (a fast desk rejection or an accelerated-track journal) to well over a year (a slow field, a hard-to-recruit specialty, or a manuscript that goes through several revision rounds). What matters for planning purposes is understanding the stages a manuscript actually passes through, which of those stages tends to eat the most time, and what realistically differs by field and journal.

The stages of a peer-review timeline

“Peer review” is often used loosely to mean the entire span from submission to a first decision, but it is really a sequence of distinct stages, each with its own typical duration:

Editorial screening / desk decision. An editor (sometimes with help from an editorial-office staff member) checks the manuscript against basic scope, formatting, and ethics requirements before deciding whether to send it out for external review at all. A desk rejection can happen in a few days; a journal that screens more carefully, or routes the manuscript through an associate editor first, may take one to two weeks.
Reviewer invitation and acceptance. The handling editor identifies and invites qualified reviewers, who then accept, decline, or simply don’t respond. This step alone commonly takes one to three weeks, longer in narrow subfields where there are only a handful of qualified, available reviewers, and longer still around conference deadlines, grant cycles, or academic holidays when reviewer availability drops.
Review completion. Once a reviewer accepts, journals typically ask for a completed review within two to four weeks. According to Clarivate’s Global State of Peer Review report (based on Publons review-completion data), the average time a reviewer actually spends between accepting an invitation and submitting a review was about 19 days overall, with real variation by field — faster-turnaround fields such as pharmacology and chemistry averaged closer to 12 days in that dataset, while fields like economics/business and mathematics averaged closer to 30 days.
Editorial decision. After reviews come in, the editor weighs them (sometimes waiting for a second or third reviewer, or consulting an associate editor) and issues a decision: accept, minor revisions, major revisions, or reject. This can be quick once all reviews are in, or slow if the editor is waiting on a late reviewer.
Revision and re-review. If revisions are requested, the clock effectively resets: authors need time to revise (journals typically allow anywhere from a few weeks to several months depending on the scope of requested changes), and the revised manuscript may go back to the same reviewers for another round before a final decision.

Added together, “submission to first decision” and “submission to final acceptance” are two different numbers, and most of the public discussion about peer-review speed conflates them. A journal that reports a fast median time to first decision may still have a long total time to acceptance once revision rounds are counted.

Typical overall timeframes

Because journals vary enormously in field, prestige, submission volume, and editorial model, any single average is only a rough guide. As a general pattern reported across the literature and by publishers themselves:

Submission to first decision: commonly somewhere between about one and four months for a manuscript that goes out for full external review, though many journals with an efficient desk-screening process report a meaningful share of decisions inside 4-6 weeks.
Submission to first decision, fields with denser reviewer pools and faster-moving norms (e.g., some areas of the physical and biomedical sciences) tend to skew toward the shorter end of that range.
Submission to first decision, fields with fewer active reviewers relative to submission volume, or with longer-form review traditions (parts of economics, some social sciences, and some humanities disciplines) tend to skew longer, sometimes running several months to first decision alone.
Submission to final acceptance is longer than submission-to-first-decision in almost every case once one or more revision cycles are included — for a manuscript that goes through major revisions, total elapsed time of six months to a year (occasionally more) is not unusual.

Treat any specific number you see quoted for “peer review” without a defined start and end point skeptically — always check whether it means time-to-first-decision, time-to-acceptance, or the reviewer’s own working time on a single review.

What actually drives the variation

Field norms and reviewer supply. The single biggest driver is how many qualified, willing reviewers exist relative to submission volume in that subfield. A niche specialty with few active researchers will structurally take longer to find and secure reviewers than a high-volume mainstream field.
Journal policies and staffing. Some journals set and publish explicit internal targets (e.g., a stated goal of first decision within 30 or 60 days) and staff an editorial office to chase overdue reviews; others run a more informal, volunteer-heavy editorial model with no enforced deadline.
Peer-review model. Open peer review and post-publication models can compress the pre-publication timeline because review happens alongside or after posting rather than strictly gating it. Registered reports add review at the protocol (Stage 1) stage before data collection, which changes the shape of the timeline rather than simply lengthening or shortening it — see CASRAI’s registered reports guide for how that two-stage process works.
Number of review rounds requested. Each additional round of major revisions effectively adds another full review-and-decision cycle to the total.
Time of year. Submissions around major conference deadlines, and reviewer responses around academic holidays and the summer/winter breaks common in many higher-education calendars, both tend to slow things down.
Reviewer conduct and reminders. A reviewer who accepts and then goes quiet is a common, unavoidable source of delay; most editorial systems send automated reminders, and editors have discretion to re-invite a replacement reviewer after a reasonable grace period, which itself adds time.

Where to find a journal’s actual, reported numbers

Rather than relying on a general average, the most reliable way to estimate the timeline for a specific submission is to check what the journal itself reports:

Many journals publish a “time to first decision” or “time to publication” statistic on their About/For Authors page, sometimes broken out by manuscript type.
Editorial-manager-style submission portals typically show manuscript status (e.g., “under review,” “reviewers assigned,” “decision in process”) that gives a rough sense of where things stand, even without an exact date.
Author-facing reviewer-recognition platforms (Clarivate’s Web of Science Reviewer Recognition Service — the service that was previously branded Publons) publish periodic field-level review-time analyses that can be a useful reference point, with the caveat that they measure reviewer completion time specifically, not the full submission-to-decision window.

What to do while you wait

A few practical points for authors:

A polite status inquiry is normal and expected once a manuscript has been under review noticeably longer than the journal’s stated or typical timeline — most journals have a standard process for this, and asking does not count against a manuscript.
Don’t submit the same manuscript to two journals simultaneously while waiting; concurrent submission is considered a breach of publishing ethics by essentially every major journal and publisher body, including ANSI/NISO Z39.106-2023‘s peer-review terminology and COPE’s guidance for authors — withdraw formally first if you want to submit elsewhere.
A long delay is not, by itself, a signal of a problem with the manuscript. It is far more often explained by reviewer recruitment difficulty, editorial-office backlog, or a slow individual reviewer than by anything about the paper’s quality.
Build the review timeline into planning for tenure clocks, grant progress reports, and thesis/dissertation timelines by checking a target journal’s reported statistics before submission, not after.

Frequently asked questions

What is a typical peer-review turnaround time?

There is no single typical figure, because “peer review” can mean the reviewer’s own working time (often reported around two to three weeks per review) or the full submission-to-decision window (commonly one to four months, and sometimes considerably longer). Always check which interval a quoted number refers to.

Why is my peer review taking so long?

The most common causes are difficulty recruiting reviewers in a narrow subfield, a reviewer who accepted but hasn’t submitted their review, an editorial-office backlog, or the manuscript being routed through more than one round of review. It is rarely a sign that something is wrong with the manuscript itself.

Can I check on the status of my manuscript?

Yes. Most journals expect and accommodate a polite status inquiry through the submission portal or directly to the editorial office once review has run noticeably past the journal’s typical or stated timeline.

Does a faster review process mean a less rigorous one?

Not necessarily. Speed is driven mainly by reviewer supply, editorial staffing, and journal policy, not by how carefully reviewers read a manuscript. Some fast-turnaround journals maintain strict reviewer-selection and decision standards; some slow ones don’t. A journal’s stated peer-review model and editorial policies are a better signal of rigor than turnaround time alone.

Is peer review the same length for every field?

No. Fields differ meaningfully in reviewer supply relative to submission volume, in typical manuscript length and complexity, and in editorial norms, all of which affect timelines. Denser, faster-moving fields tend to see shorter timelines than niche subfields or disciplines with longer-form review traditions.