Calculators — Guides & Articles

• How to Calculate Flooring for Laminate: Boxes & Waste

  Published 2026-08-19

  How to calculate flooring for laminate in feet or metres: room area, waste allowance, and the number of boxes to buy.

  

• How to Calculate Exponential Smoothing Forecast in Excel

  Published 2026-08-19

  Walk through the exponential smoothing formula, build it cell by cell in Excel, and verify the (1-α)^k weights that drive every forecast.

  

• How to Calculate Electric Vehicle Charging Cost

  Published 2026-08-19

  Calculate EV charging cost from battery size, charge range, electricity rate, and efficiency. Includes the formula for charging losses and a worked example.

  

• How to Calculate EOQ From the Following Data

  Published 2026-08-19

  Given demand, order cost, and holding cost from a textbook problem? Use the formula Q* = √(2DS/H) to calculate EOQ and verify each step online.

  

• How to Convert Energy Into Mass Using E=mc²

  Published 2026-08-19

  Convert energy into mass with E=mc². Get the formula, see a worked example, and use the free Energy Converter to handle the energy units.

  

• How to Calculate Oval Perimeter Using Semi-Axes

  Published 2026-08-19

  Find the perimeter of any oval from its two semi-axes. The Ellipse Area Calculator returns Ramanujan's perimeter approximation plus area and eccentricity.

  

• Dog Years to Human Years: The AKC Size Chart Method

  Published 2026-08-18

  Convert dog years to human years using the AKC size-based chart endorsed by the AVMA. Enter your dog's age and adult size — the result appears instantly.

  

• How to Convert Density to Mass in Any Unit

  Published 2026-08-18

  Convert density to mass units across metric and imperial systems. Free tool handles g/cm³, kg/m³, lb/ft³, lb/gal and more — no uploads.

  

• How to Calculate the Day Number of Any Year

  Published 2026-08-18

  Find the day number of any date with our free calculator. Includes ISO 8601 week numbers, days remaining, and leap year status.

  

• Day of the Week Calculator: Reference-Verified Accuracy

  Published 2026-08-18

  Find the exact weekday for any date with an accurate day of the week calculator. Cross-checked against Zeller's congruence with full leap-year handling.