Important: Support for the legacy Fitbit Web API ends on
September 30, 2026. After this date the API will continue to operate, but Google will no longer fix bugs or provide API support. On
October 30, 2026, the Fitbit Web API will be turned off and will no longer function or sync data to or from Fitbit users. To continue accessing data for your users after this date, migrate to the Google Health API. While we are not onboarding new projects at this time, we are actively working to open access to more developers and will share updates here as availability expands. For full timelines and steps, see the
Fitbit Web API Migration Guide.
Interval
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Represents a time interval, encoded as a Timestamp start (inclusive) and a Timestamp end (exclusive).
The start must be less than or equal to the end. When the start equals the end, the interval is empty (matches no time). When both start and end are unspecified, the interval matches any time.
| JSON representation |
{
"startTime": string,
"endTime": string
} |
| Fields |
startTime |
string (Timestamp format)
Optional. Inclusive start of the interval. If specified, a Timestamp matching this interval will have to be the same or after the start. Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
|
endTime |
string (Timestamp format)
Optional. Exclusive end of the interval. If specified, a Timestamp matching this interval will have to be before the end. Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
|
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Last updated 2026-10-01 UTC.
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