Math & money · Practical guide
How to Calculate Percentage Increase Between Two Numbers
Percentage increase shows how much a value has grown compared with its original value. It is commonly used to measure…
Read guideTools
Math & money
Percentage Calculator
Work out percentages, increase, decrease and the difference between two numbers instantly, with a chart.
Math & money
ROI Calculator
Calculate return on investment, net profit and the annualised return for any project.
Math & money
VAT Calculator
Add VAT to an amount or extract it from a VAT-inclusive price at any rate, with a full breakdown.
Math & money
Discount Calculator
Find the sale price and your saving, and work out stacked discounts correctly.
Math & money
Unit Converter
Convert length, weight, temperature, area and volume units instantly.
Math & money
Proportion Calculator
Solve proportions and find a missing value.
Math & money
Ratio Calculator
Simplify ratios and divide quantities.
Math & money
Average Calculator
Calculate mean, sum and range.
Math & money
Markup Calculator
Calculate selling price, profit and margin.
Math & money
Tip Calculator
Calculate the right tip and split the bill automatically among everyone at the table.
Math & money
Random Number Generator
Generate one or several truly random numbers between any two values, with an optional no-repeat mode.