Maths & science calculators
A scientific calculator, ratio and proportion, slope in % / degrees / 1:N, Ohm's law and gacha probability.
Calculator
Tap the keys or type a formula — brackets, powers, square roots, percentages, sin cos tan, log and factorials.
Ratio calculator
Fill three of A : B = C : D to get the fourth, or just A : B to simplify it.
Slope calculator
Enter a slope in any form to get it as a percentage, in degrees and as a 1:N ratio — for ramps, roofs and roads.
Ohm's law calculator
Enter any two of V, I, R and P to get the other two, with the formulas used.
Gacha odds
Enter the drop rate (%) and number of pulls to see your chance, and how many pulls give a 50% or 90% chance.
Other categories
Money & tax · Business · Dates · Health · Home & land