★ TIME CONVERTER · TIME & DATE · CHICAGO
At noon in Chicago on October 24, 2026, it is 5:00 p.m. UTC and 1:00 p.m. in New York. Chicago time IS Central Time: CDT (UTC−5) in daylight time and CST (UTC−6) in standard time. Enter any Chicago date and time below and the converter reads the offset in force on that date — never a hardcoded one — and shows the same moment in UTC, Eastern, Mountain, and Pacific time.
Chicago is Central Time, but Central Time wears two names: CDT in the summer half of the year and CST in the winter half, and the hour between them shifts every meeting invite by one. This converter resolves your Chicago date and time to a single UTC instant using real time-zone data, then reads that instant back in every other zone — so the abbreviation it prints is the one in force on your date, not a guess.
Chicago wall time is resolved to a UTC instant by iterating Intl.DateTimeFormat with timeZone America/Chicago — the offset is read from real zone data for the date you enter, never hardcoded. Every other zone is then read from that same instant with Intl, so CDT vs CST, EDT vs EST, MDT vs MST, and PDT vs PST are all named correctly by date. Chicago time IS Central Time: there is no separate Chicago zone, and a Chicago time and a Central time on the same date are the same time. Daylight time in 2026 runs from March 8 to November 1 — those are the verified changeover dates used on this page, and no other 2026 daylight-time claims are made here.
Setup: 12:00 noon in Chicago on October 24, 2026.
Line 1 — Chicago's offset on this date. October 24, 2026 falls in daylight time, so Chicago is CDT, UTC−5.
Line 2 — UTC. 12:00 + 5 hours = 17:00 UTC on October 24, 2026.
Line 3 — Eastern. Eastern is one hour ahead of Central: 13:00 EDT on October 24, 2026.
Line 4 — Mountain. Mountain is one hour behind Central: 11:00 MDT on October 24, 2026.
Line 5 — Pacific. Pacific is two hours behind Central: 10:00 PDT on October 24, 2026.
Winter: noon on January 15, 2027. Chicago is CST, UTC−6, so noon is 18:00 UTC, 13:00 EST Eastern, 11:00 MST Mountain, and 10:00 PST Pacific.
Spring forward: noon on March 8, 2026. Daylight time begins on March 8, 2026, so by noon Chicago is already CDT: 17:00 UTC, 13:00 EDT Eastern, 11:00 MDT Mountain, 10:00 PDT Pacific.
Fall back: noon on November 1, 2026. Standard time resumes on November 1, 2026, so by noon Chicago is CST: 18:00 UTC, 13:00 EST Eastern, 11:00 MST Mountain, 10:00 PST Pacific.
| Output | Formula | What it means |
|---|---|---|
| Chicago time | Date + time entered, zone America/Chicago | 12:00 CDT at the defaults — the moment you asked about. |
| UTC | Chicago time + Central offset in force | 17:00 UTC at the defaults — the same instant, zone-free. |
| Eastern | Same instant, zone America/New_York | 13:00 EDT at the defaults — one hour ahead of Chicago. |
| Mountain | Same instant, zone America/Denver | 11:00 MDT at the defaults — one hour behind Chicago. |
| Pacific | Same instant, zone America/Los_Angeles | 10:00 PDT at the defaults — two hours behind Chicago. |
| Central | Same instant, zone America/Chicago | 12:00 CDT at the defaults — Chicago time is Central Time. |
Conversions are exact for the date and time you enter, because offsets come from the browser's time-zone data rather than any table on this page. Two edge cases deserve a plain warning. First, the spring-forward hour (2:00–2:59 a.m. local on March 8, 2026) does not exist in Chicago, and the fall-back hour (1:00–1:59 a.m. local on November 1, 2026) happens twice; entering a time inside those windows may resolve to a neighboring instant, so schedule nothing critical inside a changeover hour without confirming it. Second, this page converts a Chicago wall time only — it does not convert the other direction, and it does not cover zones outside the four mainland US zones plus UTC. Error policy: malformed dates, nonexistent calendar dates, and malformed or out-of-range times are reported as errors rather than converted.
Bright Side Kit. "Chicago Time Converter: CST & CDT." https://brightoolbox.com/chicago-time-converter/ Accessed October 24, 2026.Yes — Chicago time IS Central Time. There is no separate Chicago zone: Chicago uses America/Chicago, which is CDT (UTC−5) in daylight time and CST (UTC−6) in standard time.
17:00 UTC on October 24, 2026 (CDT), and 18:00 UTC on January 15, 2027 (CST). The UTC hour depends on the date because the offset changes with daylight time.
Daylight time begins March 8, 2026 (spring forward to CDT) and ends November 1, 2026 (fall back to CST). By noon on both changeover dates the new offset is already in force: CDT on March 8, CST on November 1.
One hour: New York is one hour ahead of Chicago year-round. Noon in Chicago is 13:00 in New York whether Chicago is on CDT (13:00 EDT) or CST (13:00 EST), because both zones switch on the same dates.
Two hours: Los Angeles is two hours behind Chicago year-round. Noon in Chicago is 10:00 in Los Angeles, PDT in summer and PST in winter.
It does not exist in Chicago: clocks jump from 1:59 a.m. CST to 3:00 a.m. CDT. Do not schedule anything for 2:00–2:59 a.m. on that date. On November 1, 2026 the 1:00 a.m. hour happens twice, so a 1:30 a.m. time on that date is ambiguous.
Not on this page — it converts from Chicago time outward. Enter the Chicago date and time and read the same moment in UTC, Eastern, Mountain, and Pacific time. For the reverse direction, use the matching converter for the starting city, such as the New York or California time converter.
Because the Central offset changes: CDT is UTC−5 and CST is UTC−6. Noon in Chicago is 17:00 UTC while daylight time is in force and 18:00 UTC under standard time. That is why this converter reads the offset from the date instead of assuming one.