Embed Tools

Percentage Calculator

Three common percentage calculations — instant & private.

Scientific Calculator

A real working calculator: functions, constants, memory & percent.

Date Difference Calculator

Days, weeks, months & years between two dates — instant.

GPA Calculator

Compute your grade point average on a 4.0 scale, weighted by credits.

Statistics Calculator

Mean, median, mode, std deviation & more from a list of numbers.

Ratio Calculator

Solve the missing side of a ratio, or simplify it with GCD.

Average Calculator

Mean, median, mode, sum, range — instant statistics for any list of numbers.

Molar Mass Calculator

Compute the molar mass of any chemical formula — H₂O, NaCl, C₆H₁₂O₆…

Density Calculator

Solve density, mass or volume — ρ = m / V — for any two knowns.

Ohm's Law Calculator

Solve V = I × R for any one variable — voltage, current or resistance.

Resistor Color Code Calculator

Decode 4-band resistors from colors — and reverse value → colors.

Projectile Motion Calculator

Range, max height, time of flight — for any launch angle and velocity.