CCF CTheory2022: CPublisher: Springer
ISAACInternational Symposium on Algorithms and Computation
ISAAC is a rank C conference in Theoretical Computer Science in the CCF list's 7th edition (2026), as in 2022. The ISAAC 2027 deadline is not announced; past editions suggest late June. ISAAC 2026 takes place on Dec 7–9, 2026 in Hangzhou, China. Acceptance rate 2025: 29.2% (52/178).
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Data updated 8 November 2026 · rank from the CCF list's 7th edition
Latest edition
ISAAC 2026: call for papers timeline
- Jun 30, 2026, 11:59 UTC
- Sep 7, 2026As announced by the conferenceNotificationCommunity data · unverified
- Dec 7–9, 2026Local timeConferenceHangzhou, China
AoE (Anywhere on Earth) is UTC−12 (time zones explained). These dates come from the ccf-deadlines community project and have not yet been checked against the conference website; confirm them there before you submit. Conference website ↗
Past editions
Dates, venues, deadlines and acceptance rates
| Year | Paper deadline | Acceptance | Papers (dblp) | Dates | Venue |
|---|---|---|---|---|---|
| 2026 | 2026-06-29AoE | — | — | Dec 7–9, 2026 | Hangzhou, China |
| 2025 | 2025-06-30AoE | 29.2%52/178 · source | 55 | Dec 8–10, 2025 | Tainan, Taiwan |
| 2024 | 2024-06-28AoE | 29.0%56/193 · source | 60 | Dec 9–11, 2024 | Sydney, Australia |
| 2023 | 2023-06-30AoE | 29.9%55/184 · source | 58 | Dec 4–6, 2023 | Kyoto, Japan |
| 2022 | 2022-06-27AoE | 36.7%65/177 · source | 68 | Dec 19–21, 2022 | Seoul, Korea (Hybrid) |
| 2021 | 2021-07-05AoE | 33.5%72/215 · source | 75 | Dec 6–8, 2021 | Fukuoka, Japan (Hybrid) |
| 2020 | — | — | 66 | — | — |
| 2019 | — | — | 65 | — | — |
| 2018 | — | — | 74 | — | — |
| 2017 | — | — | 68 | — | — |
| 2016 | — | — | 65 | — | — |
ISAAC 2027 deadline forecast: late June (not announced). The last paper deadlines: 2026: Jun 30, 2026; 2025: Jul 1, 2025; 2024: Jun 29, 2024. The conference's own announcement decides.
Paper counts are dblp's main proceedings only, without workshop volumes; acceptance rates link to the page they come from. dblp ↗
CCF list
ISAAC in the CCF list
- 7th edition (2026)
- CCF C Theoretical Computer Science · no. 7
- 6th edition (2022)
- CCF C Theoretical Computer Science
- Name in the list
- International Symposium on Algorithms and Computation
- Publisher
- Springer
- dblp
- conf/isaac ↗
CCF counts the full (regular) papers of a listed conference: short papers, demos, technical briefs, summaries, Findings and the workshops held with a conference are outside the list. CCF also says the list is a recommendation and should not be used on its own to evaluate research; your institution's rules decide. What counts, case by case →
FAQ
About ISAAC
What CCF rank is ISAAC?
ISAAC is a rank C conference in Theoretical Computer Science in the CCF list's 7th edition (2026), as in 2022.
When is the ISAAC 2027 deadline?
Not announced yet. The last paper deadlines were 2026: Jun 30, 2026; 2025: Jul 1, 2025; 2024: Jun 29, 2024, so late June is likely; the conference's announcement decides.
Where is ISAAC 2026?
ISAAC 2026 takes place on Dec 7–9, 2026 in Hangzhou, China.
What is the ISAAC acceptance rate?
2025: 178 submissions, 52 accepted, 29.2%. 2024: 29.0% (56/193). The history table links each figure to its source.
Do ISAAC workshop and short papers count as CCF C?
CCF counts the full (regular) papers of a listed conference: short papers, demos, technical briefs, summaries, Findings and the workshops held with a conference are outside the list. CCF also says the list is a recommendation and should not be used on its own to evaluate research; your institution's rules decide.
In more detail: Which CCF conference papers count · How to read conference deadlines
Sources: the CCF list of recommended international conferences and journals, 7th edition (published 31 March 2026, corrected 9 April 2026) and 6th edition (2022); editions, deadlines and acceptance rates from the ccf-deadlines community project (MIT licence), marked as community data until checked against each conference's website, then marked as checked with the website's own words; proceedings and paper counts from dblp (CC0).