---
url: /docs/api/core/functions/fromBinary.md
---
[**@kaiord/core**](../README.md)

***

[@kaiord/core](../README.md) / fromBinary

# Function: fromBinary()

> **fromBinary**(`buffer`, `reader`, `logger?`): `Promise`<{ `events?`: `object`\[]; `extensions?`: {\[`key`: `string`]: `unknown`; `course?`: `unknown`; `course_points?`: `unknown`; `fit?`: `unknown`; `health?`: {\[`key`: `string`]: `unknown`; `bodyComposition?`: { `basalMetabolicRateKcal?`: `number`; `bmi?`: `number`; `bodyFatPercent?`: `number`; `bodyWaterPercent?`: `number`; `boneMassKilograms?`: `number`; `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"bodyComposition"`; `leanMassKilograms?`: `number`; `measuredAt`: `string`; `sourceBridgeId?`: `string`; `version`: `string`; `visceralFatRating?`: `number`; }; `daily?`: { `activeCalories`: `number`; `date`: `string`; `externalId?`: `string`; `floorsClimbed?`: `number`; `intensityMinutes`: { `moderate`: `number`; `vigorous`: `number`; }; `kaiordRecordId?`: `string`; `kind`: `"daily"`; `restingCalories`: `number`; `sourceBridgeId?`: `string`; `steps`: `number`; `version`: `string`; }; `hrv?`: { `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"hrv"`; `measuredAt`: `string`; `measurementWindow`: `"overnight"` | `"spot"`; `rMSSD`: `number`; `score?`: `number`; `sourceBridgeId?`: `string`; `version`: `string`; }; `sleep?`: { `endTime`: `string`; `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"sleep"`; `restingHeartRate?`: `number`; `score?`: `number`; `sourceBridgeId?`: `string`; `stages`: `object`\[]; `startTime`: `string`; `totalDurationSeconds?`: `number`; `version`: `string`; }; `stress?`: { `averageLevel`: `number`; `endTime`: `string`; `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"stress"`; `peakLevel`: `number`; `sourceBridgeId?`: `string`; `startTime`: `string`; `version`: `string`; }; `weight?`: { `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"weight"`; `measuredAt`: `string`; `sourceBridgeId?`: `string`; `version`: `string`; `weightKilograms`: `number`; }; }; `structured_workout?`: `unknown`; }; `laps?`: `object`\[]; `metadata`: { `created`: `string`; `manufacturer?`: `string`; `product?`: `string`; `serialNumber?`: `string`; `sport?`: `string`; `subSport?`: `string`; }; `records?`: `object`\[]; `sessions?`: `object`\[]; `type`: `"structured_workout"` | `"recorded_activity"` | `"course"` | `"sleep_record"` | `"weight_measurement"` | `"hrv_summary"` | `"daily_wellness"` | `"body_composition"` | `"stress_episode"`; `version`: `string`; }>

Defined in: [packages/core/src/application/from-format.ts:17](https://github.com/pablo-albaladejo/kaiord/blob/3eacbe62ef72342d970523967cc5155b5935bb85/packages/core/src/application/from-format.ts#L17)

Converts binary format data to KRD with validation.

## Parameters

### buffer

`Uint8Array`

### reader

[`BinaryReader`](../type-aliases/BinaryReader.md)

### logger?

[`Logger`](../type-aliases/Logger.md)

## Returns

`Promise`<{ `events?`: `object`\[]; `extensions?`: {\[`key`: `string`]: `unknown`; `course?`: `unknown`; `course_points?`: `unknown`; `fit?`: `unknown`; `health?`: {\[`key`: `string`]: `unknown`; `bodyComposition?`: { `basalMetabolicRateKcal?`: `number`; `bmi?`: `number`; `bodyFatPercent?`: `number`; `bodyWaterPercent?`: `number`; `boneMassKilograms?`: `number`; `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"bodyComposition"`; `leanMassKilograms?`: `number`; `measuredAt`: `string`; `sourceBridgeId?`: `string`; `version`: `string`; `visceralFatRating?`: `number`; }; `daily?`: { `activeCalories`: `number`; `date`: `string`; `externalId?`: `string`; `floorsClimbed?`: `number`; `intensityMinutes`: { `moderate`: `number`; `vigorous`: `number`; }; `kaiordRecordId?`: `string`; `kind`: `"daily"`; `restingCalories`: `number`; `sourceBridgeId?`: `string`; `steps`: `number`; `version`: `string`; }; `hrv?`: { `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"hrv"`; `measuredAt`: `string`; `measurementWindow`: `"overnight"` | `"spot"`; `rMSSD`: `number`; `score?`: `number`; `sourceBridgeId?`: `string`; `version`: `string`; }; `sleep?`: { `endTime`: `string`; `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"sleep"`; `restingHeartRate?`: `number`; `score?`: `number`; `sourceBridgeId?`: `string`; `stages`: `object`\[]; `startTime`: `string`; `totalDurationSeconds?`: `number`; `version`: `string`; }; `stress?`: { `averageLevel`: `number`; `endTime`: `string`; `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"stress"`; `peakLevel`: `number`; `sourceBridgeId?`: `string`; `startTime`: `string`; `version`: `string`; }; `weight?`: { `externalId?`: `string`; `kaiordRecordId?`: `string`; `kind`: `"weight"`; `measuredAt`: `string`; `sourceBridgeId?`: `string`; `version`: `string`; `weightKilograms`: `number`; }; }; `structured_workout?`: `unknown`; }; `laps?`: `object`\[]; `metadata`: { `created`: `string`; `manufacturer?`: `string`; `product?`: `string`; `serialNumber?`: `string`; `sport?`: `string`; `subSport?`: `string`; }; `records?`: `object`\[]; `sessions?`: `object`\[]; `type`: `"structured_workout"` | `"recorded_activity"` | `"course"` | `"sleep_record"` | `"weight_measurement"` | `"hrv_summary"` | `"daily_wellness"` | `"body_composition"` | `"stress_episode"`; `version`: `string`; }>

## Example

```typescript
import { fromBinary } from '@kaiord/core';
import { fitReader } from '@kaiord/fit';

const krd = await fromBinary(buffer, fitReader);
```