Custom calculator development

Every tool on GOAT Lab — unit converters, engineering calculators, developer utilities, and more — is built in-house. If you need a calculator, converter, or reference tool for your own website, with your own data and branding, we can build it for you.

See the work first

GOAT Lab's own tools double as a live portfolio: OmniConvert (unit conversion across 35+ categories), PayLab (salary and wage calculators), EngCalc (engineering calculators), MakerCalc (3D-printing calculators), and DevToolbox (developer utilities) are all live examples of what a commissioned build can look like. Any GOAT Lab tool can also be embedded directly into your own pages — see how embedding works.

What we build

Single-purpose calculators and converters built around your own formulas, data, and units — delivered as a lightweight page you embed with a single <iframe>, matching the scope of the tools you already see on GOAT Lab.

How it works

We start with a short email exchange to confirm the inputs, outputs, and data source you need, then build and share a working preview for your review before final delivery. There is no fixed timeline published here since scope varies from calculator to calculator; we'll give you a realistic estimate once we understand the request.

Pricing and timeline

As a guide, a single-purpose calculator typically lands in the ¥50,000–150,000 range (before tax), depending on complexity, data volume, and branding; optional maintenance is quoted separately. Typical delivery is 1–3 weeks from confirmed requirements. Every project still gets an individual quote — contact us with a short description of what you need.

Get in touch

Email contact@goat-lab.net with what the calculator should do, the site it's for, and your timeline. We reply to every inquiry, though not always immediately.

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