Useful answers, with the formula shown
ToolFactory makes fast, focused calculators that work in your browser without signup or remote data calls. Each tool starts with a useful default, exposes the calculation, and explains where the estimate stops being reliable. Pick a question below and get the result immediately.
All free tools
Trading and investing
Position Size Calculator
Turn account risk and stop distance into stock units, forex lots, crypto notional, and margin.
Drawdown Recovery Calculator
See the gain needed after a loss and compare recovery time at compound annual returns.
Health and fitness
Dates and time
Travel
Why these tools feel different
- Result first.
Defaults produce a useful answer before you type. - Formula visible.
Inputs, assumptions, and limitations are explained. - Private by design.
Calculations stay in your browser with no signup.
We build one specific page for one real question. There are no per-country or per-coin doorway pages, no scraped explanations, and no invented precision. Read more about the project, review the privacy policy, or send a correction.