Percentages and maths
Discounts, increases, proportions, VAT, averages and grades. Everyday maths, properly explained.
Percentages and discounts
4 tools- Percentage calculator Enter a percentage and a number. Instead of making you pick an operation first, we give you all four answers at once.
- Percentage change calculator From one value to another, how much has it gone up or down in percent? And how many times one is of the other.
- Stacked discount calculator 50% and then an extra 20% is not 70%. Here you see the real final price and the single discount you are actually being given.
- What percentage one amount represents Two numbers, and we tell you what percentage the first is of the second. With the remainder and the ratio in plain language.
Proportions and averages
1 toolsOther categories
- Money Compound interest, loans, mortgages and savings goals, with a breakdown of where every figure comes from and a chart of how it evolves.
- Dates and time Days between dates, ages, working days, deadlines and hours worked. Instant results, no sign-up.
- Cars and travel Real fuel economy, what a trip costs, cost per mile and splitting the bill between everyone in the car.