Calculators — Guides & Articles

• Can You Enter Latitude and Longitude in a TSP Solver?

  Published 2026-09-14

  Lat and lon cannot be entered directly for geographic distance in a TSP solver — the tool uses a flat Euclidean plane. Convert to a local projection first.

  

• Triangle Area in Square Feet from Base and Height

  Published 2026-09-14

  Calculate triangle area in square feet using base × height ÷ 2. Enter both dimensions in feet, get ft² instantly in your browser — no account, no upload.

  

• Trapezoid Area Formula: Bases, Height, 8 Units

  Published 2026-09-13

  Calculate trapezoid area from two parallel bases and perpendicular height. Pick any of 8 length units and get the squared result plus a square-meter equivalent.

  

• Convert Scientific Notation to Decimal on Casio

  Published 2026-09-13

  Casio calculator stuck on scientific notation? Use the Scientific Notation Converter to get the exact decimal form, with engineering format and copy-ready…

  

• Calculate Timesheet Hours With Lunch Breaks Accurately

  Published 2026-09-13

  Calculate timesheet hours with lunch breaks easily. Enter clock-in, clock-out, and break minutes to get accurate weekly net hours and pay totals.

  

• How to Change Time Zone in Outlook for Meetings

  Published 2026-09-13

  Outlook's time zone dropdown doesn't always give the right meeting time. Use this DST-aware converter to verify exact hours across zones instantly.

  

• Calculate Time Duration in an Excel Sheet

  Published 2026-09-13

  Master Excel time calculations with simple formulas, correct formatting, and a free browser-based duration calculator for instant verification.

  

• How to Convert Time to Decimal in Excel: Faster Method

  Published 2026-09-13

  Convert time to decimal in Excel using =A1*24 and time functions like HOUR, MINUTE, and SECOND. See the formulas, common pitfalls, and faster routes.

  

• How to Calculate Tile for a Kitchen Backsplash

  Published 2026-09-13

  Calculate how many tiles and boxes your kitchen backsplash needs. Walk through measurement, units, waste allowance, and how the Tile Calculator does the math.

  

• The Celsius to Fahrenheit Formula: How It Works

  Published 2026-09-13

  The Celsius to Fahrenheit formula is °F = (°C × 9/5) + 32. See where 9/5 and 32 come from, walk through a worked example, and avoid common offset mistakes.