20 free tools that each do one job and run entirely in your browser, with no sign-up. Engineering calculators (wire size and voltage drop, bolt torque, concrete and rebar, solar and battery, BTU and heat pump), everyday tools (mortgage, QR codes, image resizer, time zone planner, word counter), and classroom and puzzle tools: daily crosswords in English, Spanish, French and German, a no-repeat name picker and a full-screen timer.
