Enter a list of numbers and instantly see the average, sum, count, median, mode, minimum, maximum, and range.

Enter values and weights and instantly see the weighted average, weight sum, product sum, contributions, and calculation steps.

Calculate original price, discount, savings, and final price from any two values directly in your browser.

Apply multiple percentage and fixed discounts in sequence with final price, savings, effective discount, and every intermediate step.

Calculate tip, total, and exact per-person split from a percentage, fixed amount, or target total.

Enter a ratio and instantly simplify, normalize, scale, or split a total.

Enter three values and instantly solve for the fourth using direct or inverse proportion, with a clear calculation path.

Calculate the starting value, final value, and percentage change directly in your browser. Increases, decreases, and reverse calculations work without switching modes.

Calculate percentages, parts, whole values, adjustments, and percentage changes instantly in your browser.