All toolsEveryday Calculators
Everyday Calculators
Quick answers for the numbers that come up in daily life.
Percentage Calculator
Work out what percent of a number is, percentage increase or decrease and the change between two values. Free, instant and runs in your browser.
Unit Converter
Convert length, weight, temperature, area, volume, speed and more between metric and imperial units. Free, instant and works offline in your browser.
Discount & Sales Tax Calculator
Find the sale price, how much you save and the final total with tax, GST or VAT. A free discount calculator that works instantly in your browser.
Tip Calculator
Work out the tip, split the bill between any number of people and see each share, with custom tip percentages. Free and instant, nothing to install.
Fuel Cost Calculator
Estimate the fuel cost of any trip from distance, mileage and fuel price, then split it between passengers. Free, works in any currency, no signup.
GPA & Grade Calculator
Calculate your weighted GPA, course grades and the score you still need to hit a target. A free grade calculator that runs in your browser.
Aspect Ratio Calculator
Resize width and height proportionally, find the aspect ratio of any dimensions and match common ratios like 16:9 and 4:3. Free and instant.
The questions that come up at a checkout, in a kitchen or in a classroom: what is 15% of this, how many inches is 30 cm, what does the bill come to with tax. Each calculator takes the two or three numbers you already know and answers directly, without asking you to rearrange a formula.
Every result is computed as you type, in your browser. There is no form to submit, no account, and the numbers you enter are not sent anywhere.