Legal / Refund and Billing

Refund and Billing Policy

The calculator is free. There are no payments on this website. Paid work is priced and billed according to a written agreement made before we start.

How work is priced

• We agree the scope and the price in writing before any paid work starts.
• The agreement says how and when we invoice, and in which currency.
• We do not take card payments on calculaitors.com.

Our guarantee

If measuring your real work shows nothing your plan had missed, there is no charge for that measurement. The written agreement describes exactly what this covers.

Cancelling and refunds

How work can be paused, cancelled or refunded is set in the written agreement for that work. If something went wrong, contact us and we will look at it with you.

Last updated 13 November 2026.