Everyday calculators

Addition, subtraction, multiplication, division, powers, and parentheses.

A random password in the browser, with nothing sent to a server.

The average of the grades and, on a 5-point scale, the count of each mark.

Kilograms of meat and the number of skewers for the party.

Compares two pizzas by the price of a square centimetre.

Heads or tails, one flip or a series.

One integer, or several, inside the bounds you set.

Average grade and a proportional conversion to the 4.0 scale.

Converts fresh, active dry, and instant yeast.

Butter and vegetable oil in baking.

Converts dry rice to cooked rice and back.

Converts dry pasta to cooked pasta and back.

Salt for a brine, or the percent of a mix that is already made.

Water or coffee at a ratio of 1 to n.

Characters, words, and lines.

One item from the list, or several.

The lines are in random order.

Splits the lines into equal groups.

The shared lines, and what is in only one list.

Water and heating for one shower, at your rates.

The price of one page and of the whole run.

Pack mass from size and density.

Capacity from the kitchen volume and the air-change rate.

Voltage, current, resistance, and power.

Watts and kilowatt-hours from voltage and current.

Series and parallel connection of resistors.

Capacitance of a series connection and a parallel connection.

The divider output with a load or without one.

Heat to warm something, from mass, heat capacity, and the temperature gap.

How many times to fold a sheet to get thinner than the target.

The unknown in the equation C1×V1 = C2×V2.

Hardness from calcium and magnesium.

How many seeds a bed of a given area needs.