About arcitools

arcitools.com is a small, independently-run collection of free online calculators and utilities for Filipino consumers. Our goal is to help you make clearer, data-driven decisions about things that matter — starting with vehicles, then expanding to home energy, small business, and beyond.

What makes it different

• Local by default. Defaults use Philippine prices, tax rates, and market data.
• Transparent math. Every number is editable. Formulas are documented.
• Fast and private. Calculations run in your browser. Inputs never leave your device.
• Free forever. Supported by ads so tools can stay free and frequently updated.

Who runs this

arcitools is built and maintained by Joseph Arcillas, a Philippine-based software developer. Questions, corrections, and suggestions are welcome — see the contact page.

Data sources

We draw on public pricing pages from manufacturers (Toyota, BYD, VinFast, Tesla, etc.), DOE weekly oil monitors, Meralco residential tariff schedules, and BSP inflation forecasts. Dates of sourcing are noted in each tool.