Tools

Enter red, green, and blue (RGB) values and instantly convert your color to HSL (hue, saturation, lightness).

Enter hue, saturation, and lightness (HSL) values and instantly convert your color to RGB (red, green, blue).

Enter two dates as day/month/year and instantly calculate the exact number of days between them, plus full weeks and remaining days. Useful for age, duration, or project tracking.

Calculate fuel consumption in liters per 100 km, cost per kilometer and total fuel expense.

Estimate trip fuel usage and total cost from distance, average consumption and fuel price.

Calculate your body mass index and estimated healthy weight range using your height and weight.

Paste your HTML code and see an instant, safe live preview. A free tool for testing embed codes and quick HTML experiments.

Compare two countries by personnel, budget, air, land, and naval capacity. Based on a fixed, dated reference dataset.

Create a strong, random password with this free password generator. Full control over length, uppercase/lowercase letters, numbers, and symbols.

Calculate what percentage of a number is for free. Enter the base value and percentage rate, see the result instantly.

Calculate for free what percentage one number is of another. Enter the part and the whole, see the ratio instantly.

Calculate the percentage change between an old and a new value for free. See the increase or decrease rate instantly.

Record your screen directly from your browser with this free online screen recorder, watch it back, and download it to your computer. No installation needed.

Enter a source and target UTC offset and instantly calculate the time difference and day shift. Useful for planning meetings or estimating flight arrival times.

Convert kilometers to miles for free. Enter the distance, see the result instantly.

Convert miles to kilometers for free. Enter the distance, see the result instantly.

Convert kilograms to pounds for free. Enter the weight, see the result instantly.

Convert pounds to kilograms for free. Enter the weight, see the result instantly.

Convert Celsius to Fahrenheit for free. Enter the temperature, see the result instantly.

Convert Fahrenheit to Celsius for free. Enter the temperature, see the result instantly.

Convert liters to gallons for free. Enter the volume, see the result instantly.

Convert gallons to liters for free. Enter the volume, see the result instantly.

Calculate net amount, VAT amount and gross total from VAT-inclusive or VAT-exclusive values.