Calculate electricity costs from power, hours, and price per kWh. Live results, unit conversion, day-to-year totals, currency select, and PDF export.

Calculate 1:X dilution fast. Enter final volume and ratio to get solute & solvent amounts with unit conversion, live results, steps, and PDF export.

Calculate full cords, face cords, and stacked volume from your wood pile’s length, width, and height. Convert units, estimate total cost per cord, and download a PDF summary.

Calculate waist radius and fabric length for full, 3/4, half, or quarter circle skirts. Converts cm/in/yd, includes seam allowances, tooltips, and PDF export.

Plan fuel for any trip: enter distance, economy (L/100km, mpg), and price per L/gal to get fuel used, total cost, and cost per person—live with PDF export.

Calculate trip fuel cost instantly. Enter distance, mpg/km-L or L/100km and fuel price. Live results, unit conversion, summary, and PDF export.

Drive Time Calculator: get trip time & arrival from distance, speed & breaks; convert km↔mi and km/h↔mph; estimate fuel cost per person.

Compute average speed from distance and time. Convert km/h, mph, m/s, ft/s & knots. Live results, unit sync, steps, and PDF export—free online.