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calcbloc
API / FREE KEY / 5,000 REQUESTS A DAY

Get a free API key

The key appears on this page straight away. There is no email step: we do not send email, so copy the key before you leave the page.

Only used to contact you about your key or a change to the API.

What you get

  • 5,000 requests a day and 60 a minute on every endpoint.
  • Take-home pay and employer cost for the US, UK, Australia, New Zealand, Canada, Ireland and India, plus the official tax tables.
  • We store your email, your website address, the date and your agreement to the attribution rule, and only a SHA-256 hash of the key. Nobody at CalcBloc can read your key back.

The one condition: a visible link to calcbloc.com wherever you show the figures. See the terms of use and the API documentation. Need more than the free limits, or use without attribution? Contact us.

To revoke or replace a key, email [email protected] from the address you signed up with and quote the key id (it starts with k_).