About the 27 Free Calculators Fleet
The web is filled with bloated, ad-ridden calculator websites that demand your email address, lock basic math behind paid subscriptions, or transmit sensitive financial and technical inputs to opaque cloud servers.
Our Core Architecture Directives
- • 100% Client-Side Privacy: All calculations execute in local JavaScript and WebAssembly on your device. Zero sensitive tax or architecture data is ever stored on a remote server.
- • Zero Paywalls & Zero Accounts: No sign-ups, no verification emails, and no credit cards. Instant access to institutional math.
- • Zero Paid APIs & Zero Cloud Dependencies: Engineered for infinite longevity and blazing-fast loading across global edge networks.
Curated Tool Categories
Our fleet covers complex niche disciplines where off-the-shelf calculators fail to keep up with modern legislation and technology:
- Developer & AI: OPFS storage limits, GPU VRAM sizing for Llama 3 / DeepSeek, and prompt caching ROI.
- Corporate Tax & Legal: IRC § 1202 QSBS exclusions, § 1250 depreciation recapture, S-Corp payroll modeling, and 2026 FLSA salary rules.
- Creator Economy: UGC rate cards, TikTok Shop affiliate unit economics, and Fourthwall vs Shopify fee comparisons.
- Real Estate & Hardware: The 75% BRRRR cash-out refinance blueprint, EV charger breaker sizing (NEC 625), and 50-state vehicle sales tax.