Calculators Tools

Everyday calculators for percentages, fractions, discounts, tips, ratios and quick maths.

• Scientific Calculator — Free online scientific calculator with trig, logs, roots, powers, factorials, memory keys, DEG/RAD and a calculation history.
• Basic Calculator — A clean four-function online calculator with percent, sign change, backspace, keyboard input and a history of your sums.
• Percentage Calculator — Work out X% of Y, what percent one number is of another, percentage change, or increase and decrease a value by a percent.
• Fraction Calculator — Add, subtract, multiply and divide fractions and mixed numbers, with the simplified answer, decimal value and worked steps.
• Discount Calculator — Find the sale price and how much you save, with an optional second stacked discount and sales tax added on top.
• Tip Calculator — Work out the tip and total for a bill, split it between any number of people, and optionally round each share up.
• Ratio Calculator — Simplify ratios like 12:18, solve proportions such as 2:3 = 8:?, and split a total amount in a given ratio.