Last updated 9 November 2026. By using RobustPCB you agree to these terms.
The service
RobustPCB provides engineering calculators, and accounts for saving your work. It is a design aid. It does not certify or qualify any design, and it does not replace the standards it cites or engineering judgement. The disclaimer is part of these terms.
Using it
You can use the calculators for commercial and non-commercial work. You can use the results in your designs and documents, and we claim no rights over your designs. Please do not disrupt the service, bypass its access controls, access other people's data or store unlawful content. Heavy automated use may be rate limited.
Accounts
- Keep your password private. You are responsible for activity under your account.
- Use an accurate email address.
- One person per account.
- You can close your account at any time. We may suspend an account used to abuse the service.
Your content
Your saved calculations, projects and notes remain yours. We store and process them to run the service, as the privacy page describes. You can export them from your account.
Signed reports and review packs
A signed report or design review pack is tamper-evident: its verification code confirms the document is unchanged since it was issued. It is not cryptographically signed by a certificate authority and is not a qualified electronic signature. It does not certify compliance with any standard, and it does not replace design qualification or type testing.
Our content
The text, equations, explanations and software on this site are protected by copyright. Cited standards belong to their standards bodies, and RobustPCB is not affiliated with or endorsed by them.
Availability
The service and its features may change over time.
Warranty
The service is provided "as is" and "as available", without warranty of any kind, express or implied, including merchantability, fitness for a particular purpose, accuracy and non-infringement.
Liability
To the fullest extent the law allows, RobustPCB is not liable for any indirect, incidental, special or consequential loss, or for lost profits, lost data or the cost of remediation, arising from use of the service, including any design decision based on its results. Verifying a result before it reaches hardware is the engineer's responsibility.
Nothing here excludes liability that cannot lawfully be excluded, including for death or personal injury caused by negligence, or for fraud. Your statutory rights as a consumer are unaffected.
Paid plans
A paid plan adds the work around the calculators: more saving, analysis tools, fuller exports, signed reports and design review packs. Plans and prices are on the pricing page.
Card payment is open. The price of each plan is on the pricing page and at checkout, with any tax shown before you pay.
Payments are taken by our payment provider as merchant of record. Its terms and privacy policy cover the checkout, card details, invoice and tax.
Our orders are processed by our online reseller Paddle.com, which is the merchant of record for every order. Paddle handles the checkout, card details, invoice, tax and refunds under its own terms and privacy policy.
A subscription renews automatically at the end of each period, at the price then shown, until cancelled. You can cancel at any time with the link in your receipt email, or by writing to us. Cancelling stops the next renewal, and you keep the plan until the end of the period you paid for.
If a paid plan ends, the account moves to the free plan, and the free limits on the pricing page apply to anything new you add.
A new account may start with a 3-day Pro trial, with no card. When it ends, the account moves to the free plan and nothing is charged.
Refunds and cancellation
Payments are taken by our payment provider, the merchant of record, and refunds are handled under its buyer terms (Paddle). Consumers in the UK, the EU and the EEA may have a legal right to cancel within 14 days of a purchase. To ask about a refund, reply to your payment receipt or write to [email protected].
You can cancel a subscription at any time from the link in your receipt or on your billing page. Cancelling stops the next renewal, and the plan runs to the end of the period paid for.
Changes
When these terms change, the date at the top changes. Using the service afterwards means accepting them.
Contact
Questions about these terms: [email protected].