Calculators that give straight answers
Free, fast, and accurate — every formula sourced and dated, every result computed in your browser. No signup, no uploads, nothing stored.
Investing
DRIP Calculator
See what dividend reinvestment does to a position over the years — with and without the compounding.
InvestingStock Average Calculator
Your true average cost across every buy, and what it takes to move it.
CreatorYouTube RPM Calculator
What your views actually pay — by niche and country, with real benchmark ranges.
FreelanceFiverr & Upwork Fee Calculator
Your real take-home after platform and withdrawal fees — and what to charge to net your target.
FreelanceFreelance Quote Calculator
Build a project quote that covers overhead and margin — then copy it, client-ready.
FitnessOne-Rep Max Calculator
Your estimated 1RM across four formulas, plus the training-percentage table.
How these are built: each tool states its exact formula, shows worked examples, links its sources, and carries a "last verified" date — because a calculator you can't check is just a guess with buttons. Everything runs client-side; your numbers never leave this page.