Simple, fast math calculators for everyday use. Every calculator explains the formula and shows a worked example.
These calculators cover the three pieces of arithmetic people reach for most often outside a classroom. The percentage calculator handles the classics — what is 18% of 2,499, what percentage is 45 out of 60, and how much did a price change — plus a built-in GST mode for Indian tax slabs. Percentages are the language of discounts, marks, interest rates and statistics, and this tool shows the working for each mode so the method sticks.
The ratio calculator deals with proportion: simplifying 48 : 36 to 4 : 3, scaling a recipe from four people to six, reading a 1 : 50,000 map scale, or splitting an amount between partners in a fixed ratio. It shows the greatest common divisor used in each simplification, so you see exactly how the answer was reached rather than just the answer itself.
The average calculator goes beyond the simple mean: paste any list of numbers and get the mean, median, mode and range together — useful because the mean alone can mislead badly when data contains outliers. Its weighted mode computes credit-weighted CGPAs and portfolio averages, where some values legitimately count more than others. Every tool explains its formula with a worked example, follows the standard NCERT methods, and processes everything in your browser without sending data anywhere.