Unit Conversion
The /convert endpoint allows you to convert values between units of the same category. You need to provide a value to convert, a source unit, and the target unit.
GET/v5/convert
Parameters
| Parameter | Required | Description |
|---|---|---|
value | Yes | The numeric value to convert |
from | Yes | The source unit (see available units below) |
to | Yes | The target unit (must be in the same category as from) |
Available Units
Temperature:
| Unit | Description |
|---|---|
celsius | Celsius degrees |
fahrenheit | Fahrenheit degrees |
kelvin | Kelvin |
Length:
| Unit | Description |
|---|---|
km | Kilometers |
mi | Miles |
m | Meters |
ft | Feet |
cm | Centimeters |
in | Inches |
yd | Yards |
Weight:
| Unit | Description |
|---|---|
kg | Kilograms |
lb | Pounds |
oz | Ounces |
g | Grams |
ton | Metric tons |
Data:
| Unit | Description |
|---|---|
b | Bytes |
kb | Kilobytes |
mb | Megabytes |
gb | Gigabytes |
tb | Terabytes |
Speed:
| Unit | Description |
|---|---|
km/h | Kilometers/hour |
mph | Miles/hour |
m/s | Meters/second |
knots | Knots |
Response Fields
| Field | Type | Description |
|---|---|---|
from | string | Source unit |
to | string | Target unit |
value | number | Original value to convert |
result | number | Converted value |
Code Examples
curl -X GET \
"https://api.sylvain.sh/v5/convert?value=100&from=km&to=mi"Try It
Error Handling
If parameters are missing or invalid, the API will return an error:
| Error Message | Description |
|---|---|
Please provide a valid value (?value={value}) | The value parameter is missing or invalid |
Please provide a valid source unit (&from={unit}) | The from parameter is missing or invalid |
Please provide a valid target unit (&to={unit}) | The to parameter is missing or invalid |
Value must be a number | The value is not a valid number |
Invalid conversion unit | The from/to combination is not valid |
Value must be greater than absolute zero | The value is below absolute zero (temperature only) |