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Useful formulas, sensible edge cases and a clear way to report a mistake.
09 TOOLS · FREE · PRIVATE
Small answers.
Big relief.
Useful calculators for freelancers, marketers, online sellers—and everyone with a number they need to understand.
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9working tools
BUILT FOR REAL CLIENT WORKDo not report ROAS.
Do not report ROAS.
Report profit.
Most ad calculators stop at revenue divided by spend. Our campaign planner includes margin, management fees and production costs—then shows the break-even line and three possible outcomes.
- Google, Meta or any CPC campaign
- Profit, CPA, ROAS and break-even targets
- Copyable, printable client summary
EXAMPLE CAMPAIGN / LIVE MODEL
Ad spend$2,500
Projected revenue$7,680
ROAS3.07x
Estimated profit$1,174
Change every assumption inside the planner.THE USEFUL PARTPick your problem.
Pick your problem.
We'll do the math.
Every tool below works now. Type in your numbers and get a clear answer instantly.
Human checked Aug 2026
AGE CALCULATOR ✦
How old am I, exactly?
YOU ARE31years 7months 16days
Open the complete Age calculator page ↗11,551 days lived137 days to birthday
◉ Calculations happen only in your browser. Your information is never saved.
Useful first.
Everything else second.
Keep it private
Your entries stay in this browser. We do not collect what you type into a calculator.
Never fake it
Working tools say “ready.” Ideas that are not built yet say “coming soon.” Simple.
A NOTE FROM THE BUILDER / AUGUST 2026
Found a mistake? Tell us ↗Most calculator pages turn a five-second answer into an obstacle course. LifeWidget exists to put the answer first—and make the journey there feel a little less boring.