The playground

Try any of 919 endpoints — live.

Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.

Playground demo key · api.reefapi.com

post/dev-utils/v1/base_convert1 credit

Convert integers between bases 2-36 (arbitrary precision; 0x/0b/0o prefixes accepted).

Working example

Parameters

inputrequired

The number (string). Prefixes 0x/0b/0o override from_base.

from_baseoptional

Source base (ignored if input has a prefix). (2–36)

to_baseoptional

Target base. (2–36)

request preview

curl -X POST https://api.reefapi.com/dev-utils/v1/base_convert \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"input":"ff","from_base":"16","to_base":"10"}'

Hit Send to run this endpoint live.