Convert a datetime between any two IANA time zones using the runtime's ICU tzdb
Convert a datetime between any two IANA time zones using the runtime's ICU tzdb — always current, DST-correct, half-hour zones included. A datetime without offset is read as wall time in `from` (ambiguous fall-back times resolve to the earlier instant; times skipped by spring-forward shift ahead, flagged in `note`). Returns both ISO datetimes with offsets and DST status per side. Unknown zone → 400 with a spelling suggestion.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
27 msmedian answer time
$0.001listed price per call
$0.001price it asked us
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Endpoint
GET https://402utils.com/v1/timezone-convert
| Category | Everything else |
|---|---|
| Provider host | 402utils.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.001 | 27 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"datetime": "2026-07-14T09:30:00",
"from": "Europe/Paris",
"to": "Asia/Ho_Chi_Minh"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"description": "Query params. `datetime` optional (default: now). `from`/`to` are IANA zone ids.",
"properties": {
"datetime": {
"description": "ISO 8601. With Z/\u00b1HH:MM it is an absolute instant; without, wall time in `from`.",
"type": "string"
},
"from": {
"description": "Source IANA zone, e.g. Europe/Paris.",
"type": "string"
},
"to": {
"description": "Target IANA zone, e.g. Asia/Ho_Chi_Minh.",
"type": "string"
}
},
"required": [
"from",
"to"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"dstActive": {
"description": "Whether daylight-saving time is in effect on each side.",
"properties": {
"from": {
"type": "boolean"
},
"to": {
"type": "boolean"
}
},
"required": [
"from",
"to"
],
"type": "object"
},
"fromOffset": {
"description": "UTC offset of `from` at that instant, \u00b1HH:MM.",
"type": "string"
},
"input": {
"description": "The instant expressed in `from`, ISO with offset.",
"type": "string"
},
"note": {
"description": "Present when the wall time was ambiguous or nonexistent in `from`.",
"type": "string"
},
"output": {
"description": "The same instant expressed in `to`.",
"type": "string"
},
"toOffset": {
"description": "UTC offset of `to` at that instant.",
"type": "string"
}
},
"required": [
"input",
"output",
"fromOffset",
"toOffset",
"dstActive"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}