DEVELOPER DOCUMENTATION API v1

Measurement conversion, ready to build with.

Convert measurements with explicit units and reliable decimal-string precision. Start with one request, then explore batch conversion and unit discovery.

Start the quickstart Explore API reference

BASE URLhttps://api.unifyunits.com

YOUR FIRST REQUESTcURL

bash

curl "https://api.unifyunits.com/v1/convert?value=1&from=ft&to=m" \
  -H "Authorization: Bearer $UNIFYUNITS_API_KEY"

A precise result, returned as a decimal string. See the full walkthrough →

THE FOUNDATION

Everything you need to convert.

A focused API with predictable responses and an explicit contract.

01 / CONVERT

One value or many

Make a single conversion or send a batch of measurements in one request.

Conversion guides 02 / PRECISION

Decimal values

Send and receive decimal strings so numeric intent stays explicit.

Precision guide 03 / DISCOVER

Find the right unit

Browse 154 units across 15 categories, with identifiers you can use in requests.

Explore units

KEEP BUILDING

Choose your next step.

Go from the first request to a production integration at your own pace.

01 Set up authentication 02 Read the endpoint reference 03 Follow a language guide 04 View the OpenAPI contract

Need a key? Create your API key