Urencalculator
Use the free online Urencalculator tool. Fast, private and easy to use — runs entirely in your browser. Part of our Rekenmachines collection.
Percentagecalculator
Work out a percentage of a number, or what percentage one number is of another.
Gemiddeldecalculator
Calculate the mean, median, sum, count, minimum and maximum of a list of numbers.
Winstmargecalculator
Find profit, margin and markup from cost and revenue — or the revenue needed for a target margin.
Kortingscalculator
See the final price after a discount and how much you save.
Btw-calculator
Add or remove GST/VAT at any rate to get net, tax and gross amounts.
PayPal-kostencalculator
Estimate PayPal fees and the amount to request so you receive what you need.
Stripe-kostencalculator
Estimate Stripe processing fees and the charge needed to net a target amount.
CPM-calculator
Calculate CPM, total cost or impressions for an ad campaign — fill any two.
Kanscalculator
Compute the probability of A and B, A or B, not A, and neither for independent events.
Betrouwbaarheidsintervalcalculator
Find the confidence interval for a mean at 90%, 95% or 99% confidence.
Dagencalculator
Count the number of days, weeks and months between two dates.
Urencalculator
Work out the hours and minutes between two times, including overnight shifts.
Maandencalculator
Count the whole months — and years plus months — between two dates.
TDEE-calculator
Estimate your Total Daily Energy Expenditure (TDEE) and calorie targets for weight goals.