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Open Compound interest calculatorDays until Christmas.
Also: exact age, days between dates and working days.
Open Days between datesSee what overpaying saves you.
Monthly repayments, loan-to-value, total interest — and how much a small monthly overpayment saves.
Open Mortgage calculatorConvert anything.
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Money 9
€VAT calculatorAdd or remove VAT for the UK, Germany, France, Italy, Spain, Canada and more. ↻Loan calculatorMonthly payment, total interest and a full repayment schedule. ⌂Mortgage calculatorRepayments, loan-to-value and how much overpaying saves. ↗Compound interest calculatorSee how savings grow with monthly contributions. ⏱Salary calculatorHourly wage to yearly salary and back – per day, week and month. ♪Tip calculatorWork out the tip and split the bill between friends. −Discount calculatorSale price and savings – including “extra % off” deals. ℓFuel cost calculatorWhat a trip costs in petrol or diesel – mpg or l/100 km. ◎Savings goal calculatorHow much to save each month – or how long until you reach your goal.Health 7
♥BMI calculatorMetric or imperial, with your healthy weight range. ✿Due date calculatorEstimated due date, pregnancy week and trimester. ◐Calorie calculatorDaily calories to maintain, lose or gain weight (BMR & TDEE). ○Ovulation calculatorFertile window, ovulation day and next period. △Body fat calculatorBody fat percentage with a tape measure (US Navy method). »Pace calculatorPace per km or mile, speed and finish times for 5K to marathon. ☾Sleep calculatorBest bedtime or wake-up time based on 90-minute sleep cycles.Date & time 4
✦Age calculatorExact age in years, months and days, plus your next birthday. 31Days between datesCount days, weeks and weekdays between two dates. ▦Working days calculatorBusiness days between two dates, minus holidays. ◷Time zone converterConvert a time between cities – daylight saving included.Maths & units 6
%Percentage calculatorX% of Y, percentage change, increase and decrease. ⇄Unit converterLength, weight, temperature, volume, area and speed. AGPA calculatorWeighted GPA from letter grades and credit hours. ▢Square footage calculatorFloor area of rooms in sq ft and m², with cost. ΣAverage calculatorMean, median, mode, range and standard deviation of a list. ⅫRoman numeral converterNumbers to Roman numerals and back, with a breakdown.Made for your country.
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Germany
Calculate VAT ›France
Calculate VAT ›Italy
Calculate VAT ›Spain
Calculate VAT ›United Kingdom
Calculate VAT ›Austria
Calculate VAT ›Rates checked against official government sources · November 1, 2026
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Questions, answered.
How do I add VAT to a price?
Multiply the net price by 1 plus the VAT rate. In the UK (20%): £100 × 1.20 = £120. To remove VAT, divide the gross price by 1.20.
How is a monthly loan payment calculated?
M = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1), where P is the loan amount, r the monthly interest rate and n the number of months. A $25,000 loan at 5.9% over 5 years costs about $482 a month.
What is a healthy BMI?
For most adults a BMI from 18.5 to 24.9 is considered a healthy weight. BMI does not account for muscle mass, age or body shape, so it is a rough guide, not a diagnosis.
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