Tell us what needs fixing or improving.
Report calculator issues, suggest focused construction tools or ask a question about the site.
What makes a useful calculator report
If a result looks incorrect, include five things: the calculator name, the exact values you entered, the units, the result displayed and the result you expected. If the calculation depends on a product — bag yield, paint coverage, board price — mention the printed value from the label. A report with those elements can be reproduced in under a minute, which is the difference between a fix and a debate. Reports that say only "the answer is wrong" usually turn out to be a unit question, and those are worth fixing in the page text so the next visitor never hits the same confusion.
Suggesting a new calculator
Focused suggestions are the most useful kind. A request framed as a shape and a purpose — "a circular slab version of the concrete tool" or "rebar weight from bar size and footage" — can be evaluated immediately for its inputs, formula, assumptions and related tools. A request framed as a outcome — "make a kitchen calculator" — needs decomposition before it becomes a page. BuildNumeris grows as a connected toolkit, so suggestions that link to existing families land fastest.
How the form works
Messages are delivered through FormSubmit, a dedicated form-delivery service: the submission travels over HTTPS to FormSubmit and is forwarded straight to the site's mailbox — no email application opens on your device, and the browser's 'form not secure' warning does not appear. Nothing is stored on the website itself; the site remains static, with no database and no server-side processing. After sending, visitors land on a short thank-you page, and a one-time activation link was confirmed when the form was first set up — the standard FormSubmit anti-abuse step.
Privacy-conscious communication
Do not send passwords, payment information, confidential plans, client-identifying documents or unnecessary personal information through the form. A calculation problem can normally be described using dimensions, units and product names without identifying a property owner or sharing private files. The privacy page describes how contact messages are handled in more detail.
What contact is not
Contacting BuildNumeris does not create an engineering, architectural or construction advisory relationship, and the site cannot review project drawings, size structural members, interpret local codes or certify any quantity for construction. Website feedback is reviewed as website feedback. Safety-critical project decisions belong with the project's qualified professionals and documents — the disclaimer page sets out that boundary in full.
Response expectations
Reports are reviewed in the order received. Clear, reproducible reports get priority because they are actionable; vague ones usually generate a request for the five elements listed above. Corrections to formulas, units or page text are the highest priority, followed by new calculator suggestions, followed by general site questions. If a reported arithmetic error is confirmed, the correction is made and noted, because a calculator site's only asset is being right in public.
Answers to common questions
How does the form reach the site?
Through FormSubmit's encrypted relay: your message is submitted over HTTPS and forwarded to the BuildNumeris mailbox within moments. It never opens your email app, and a hidden honeypot field quietly filters automated spam before delivery.
I think a formula is wrong. What happens next?
The report is reproduced with the exact values you sent; if the arithmetic or a unit label is genuinely wrong, the page is corrected and the correction noted. Many reports turn out to be unit questions — inches entered in a feet field — and those lead to clearer labels rather than formula changes, which is still a win.
Why is there no account or saved-project feature?
Accounts, logins and stored projects would add servers, passwords and privacy obligations that a calculator site does not need. Everything runs in the browser and disappears when the tab closes. If you need a record, copy the result rows into your own estimate sheet while the numbers are in front of you.
Can you add the calculator I need this week?
Simple shape-based extensions of existing families — a circular slab, a hip-roof area version, rebar weight from bar size — are quick because they reuse proven logic. New families with regulatory dimensions, meaning anything that touches structural design or code compliance, are deliberately out of scope and will stay that way.
Do you accept guest posts or link exchanges?
The site keeps a single voice and a strict no-filler content standard, so unsponsored guest content is not part of the plan. Genuine corrections from practitioners are always welcome, and the best ones improve pages for everyone.
Business and collaboration inquiries
Questions about licensing the calculator library for internal use, embedding tools in an existing platform, or sponsoring a specific calculator can go through the same form — put "business" in the subject and describe the use case in two or three sentences, including how the tools would be hosted and whether the visible-formula standard must be preserved. That standard is not negotiable, because it is what makes the tools worth embedding.
A note on tone and scope
BuildNumeris reads like a job-site conversation, not a legal binder, but the boundary underneath is serious: quantity yes, adequacy no. Reports asking the site to certify a number, size a member or approve a detail for construction will always receive the same honest answer — that decision belongs to a qualified professional holding the actual project documents.
Quick checklist before you send
Calculator name; entered values with units; displayed result; expected result; product label values if relevant; and one sentence on what you were estimating. That is the whole form filled in usefully — everything else is optional. Reports written from the calculator page itself, while the numbers are still on screen, are consistently the fastest to resolve.