Everyday Life

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.