How can we help?

Contact us

For questions about calculations, saved jobs, account access, or subscriptions, email Rebar Calculator LLC.

Include the email you use to sign in, what you were trying to do, and any error message. A screenshot can help—hide confidential project details.

Keep passwords, API keys, full card numbers, and security codes out of support emails.

Subscriptions and billing

Open Subscription → Manage billing in the calculator to view available payment, invoice, and cancellation options. If you cannot access billing, email us for help.

Cancellation is intended to take effect at the end of the paid billing period. For a billing error or refund request, contact support so we can review the issue.

The app is currently testing subscriptions in Stripe Sandbox. Real customer payments are not enabled.

Calculation questions

Results use nominal rebar weight and US short tons (2,000 pounds per ton). Enter the length of each bar; for bent bars, use its developed length, including bends and hooks. Waste and lap allowances are not added automatically.

Verify quantities, bar sizes, dimensions, and project requirements before ordering or installing material.