Perform arithmetic operations, including addition, subtraction, multiplication, and division. View a display log of calculations and results. Use a backspace key to correct entries. Support decimal points or commas for number input.
by Edison Largo★ 4.7152 ratingsUtilitiesFreeData updated 2026-09-06
Calculate volume for slabs, footings, columns, walls, and steps. Input dimensions and select mix type for accurate estimates. Supports metric and imperial units. Export results and share via email.
Calculate between two pipes or a hole and a pipe. Input inside and outside diameters and lengths. Switch between US customary and metric units. Perform calculations for oilfield or general use.
Calculate time, speed, and distance for road rallies. Input rally details and track progress. Generate reports and adjust strategies based on real-time data. Sync with GPS devices for accurate navigation.
Calculate possible types for a child by entering parents' groups. Display four possible results: A, B, AB, and 0, each with Rh positive or negative options. Include a donor compatibility .
Calculate tips by entering subtotal and selecting a percentage, or input subtotal and total to find the tip amount. Adjust custom percentages for precise calculations. Split checks among 1 to 30 people using the slider.
Convert to kilowatts and vice versa using formulas for DC, single-phase AC, and three-phase AC. Input values and select voltage type to calculate power. Display results clearly with unit options.
Perform calculations for framing, concrete, tiles, and roofing with built-in unit conversions. Input project dimensions to estimate material quantities. Save and share calculation results. Sync data across devices for project management.