The numbers that come up in ordinary life
What a loan really costs. What actually lands in your account. How many grams are in a cup of flour. No account, nothing between you and the answer, and nothing you type leaves your device.
18 calculators, all free
Loans & mortgages
What a loan actually costs, and what paying extra saves.
- Mortgage payment calculatorThe monthly payment on a mortgage, the total interest over its life, and what the payment really is once tax and insurance are in it.
- Car loan calculatorWhat a car costs per month once the down payment and trade-in come off, and what the loan adds over the sticker price.
- Extra payment calculatorWhat paying a bit more each month does to a loan — in interest saved and in years removed from the term.
Salary & pay
What lands in your account, not what the offer letter says.
Converters
Units and dates, converted exactly.
- Length converterConvert length between every common unit.
- Weight converterConvert weight between every common unit.
- Temperature converterConvert temperature between every common unit.
- Volume converterConvert volume between every common unit.
- Speed converterConvert speed between every common unit.
- Area converterConvert area between every common unit.
- Currency converterConvert between 30 currencies at the European Central Bank's published reference rates, with the date those rates were set.
- Age calculatorAn exact age in years, months and days — handling leap years and short months properly, which is where mental arithmetic goes wrong.
- Days between datesThe exact number of days between two dates, and what those dates fall on.
- Business days calculatorWorking days between two dates, weekends excluded.
Kitchen
Cups to grams, oven temperatures, and scaling a recipe.
- Cups to grams converterCups to grams and back, per ingredient — because a cup of flour and a cup of honey weigh very different amounts.
- Oven temperature converterCelsius, Fahrenheit and gas mark side by side, with the fan-oven reduction — using the settings an oven dial actually has.
- Recipe scalerRescale a whole ingredient list for a different number of servings, with quantities rounded to fractions you can measure.