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831 tools
This calculator computes the surface area of a number of common shapes, including sphere, cone, cube, cylinder, capsule, cap, conical frustum, and more.
Pythagorean Theorem calculator to find out the unknown length of a right triangle. It can provide the calculation steps, area, perimeter, height, and angles.
Right triangle calculator to compute side length, angle, height, area, and perimeter of a right triangle given any 2 values. It gives the calculation steps.
The hours calculator can add and convert hours, find the hours between two times, determine weekly working hours, and tell you what time it'll be some hours from now.
This free time card calculator generates weekly time reports based on provided work times and hourly rates. It can account for various overtime situations.
Free day counter to calculate the number of days between two dates, including the number of working days, weekends, and holidays.
Utilize our free square footage calculator to determine the area of diverse property shapes in square feet (sq ft) accurately and effortlessly.
This stair calculator computes stair parameters such as rise, total run, angle, and stringer length based on the height, run, tread, and headroom requirements.
This free roofing calculator estimates the area of a roof and the number of materials required to replace or build the said roof.
This calculator estimates the number of tiles needed to cover an area such as a floor, wall, or roof. It can also account for the gap or overlap between tiles.
This free mulch calculator estimates the total amount of mulch needed to cover an area, such as a garden. It can also estimate the associated costs.
This free gravel calculator estimates the amount of gravel needed to cover an area. It can also estimate the cost.
This free height calculator predicts a child's adult height based on linear regression analysis. It can also convert between different units of height.
This free density calculator determines any of the three variables in the density equation given the other two.
Effortlessly determine speed, distance, and time using our speed calculator—a perfect tool for finding average speed for a given time and distance. Try it now!
This free molarity calculator determines any of the four variables in the molarity equation, given the other three.
This molecular weight calculator can determine the molecular weight or molar mass of a molecule based on its formula and also provides the percentage of the atoms.
This free Ohm's Law calculator solves for any of the variables in the Ohm's Law equation using various units of measurement and gives out the solving steps.
This calculator estimates bra size based on bust size, frame size, and common measurement standards. Also, convert bra sizes in the US, UK, EU, and Australia.
This free tool converts between shoe sizes used in the U.S., Canada, UK, India, EU, Japan, Mexico, and China and can also convert between shoe sizes in these countries and foot length.
This free fuel cost calculator estimates the fuel cost of a trip based on fuel efficiency, distance, and gas price using various units of measurement.
Use the horsepower calculator to estimate the current engine horsepower of your car. This tool provides you with results in horsepower units as well as in watts and other power units.
This tire size calculator finds the tire diameter, sidewall height, and circumference, using the tire code on the tire. It includes a tire comparison feature and tire size speedometer calculator.
Decimal to percent converter allows quick conversion between two common ways of representing fractions.