Calculators
Free calculators: percentage, age, loan/EMI, compound interest, tax/VAT/GST, BMI, ROI, CPM/CPC, currency converter and more.
AdSense Calculator
Estimate AdSense earnings from page views, CTR and CPC — daily to yearly.
YouTube Earnings Calculator
Estimate YouTube ad earnings from views and RPM — per video or channel.
Age Calculator
Calculate exact age in years, months and days from any date of birth.
Percentage Calculator
Calculate percentages three ways: X% of Y, X as a % of Y, and % change.
Average Calculator
Calculate the average (mean), median and more from any list of numbers.
Discount Calculator
Calculate sale prices and savings — percent off, final price, instantly.
Sales Tax Calculator
Calculate sales tax — add tax to a price or back it out of a total.
GST Calculator
Calculate GST — add it to a price or extract it from a GST-inclusive total.
VAT Calculator
Calculate VAT — add it to net prices or extract it from gross totals.
Margin Calculator
Calculate profit, margin and markup from cost and price — and see the difference.
Loan EMI Calculator
Calculate monthly loan payments, total interest and total cost.
Compound Interest Calculator
Calculate compound growth — see your money multiply year by year.
ROI Calculator
Calculate return on investment — profit, ROI percentage, instantly.
PayPal Fee Calculator
Calculate PayPal fees — what you'll receive, or what to invoice.
Stripe Fee Calculator
Calculate Stripe fees — net payout, or the gross-up to charge.
CPM Calculator
Calculate CPM, cost or impressions — enter any two, get the third.
CPC Calculator
Calculate cost per click, budget or clicks — any two give the third.
Probability Calculator
Calculate probabilities — single events, AND/OR combinations, instantly.
Confidence Interval Calculator
Calculate confidence intervals — the margin of error around your estimate.
BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units.
Calories Burned Calculator
Calculate calories burned — by activity, weight and duration.
Time Zone Converter
Convert times between time zones — meetings across the world, DST-aware.
Date Difference Calculator
Calculate days between dates — exact duration in days, weeks, months, years.
Tip Calculator
Calculate the tip and split the bill — total per person in seconds.
Electricity Cost Calculator
Calculate what appliances cost to run — per day, month and year.
Bandwidth Calculator
Calculate website bandwidth needs — visitors × pages × size, with headroom.
Freelance Rate Calculator
Calculate your freelance hourly rate — from target income, real costs and billable hours.
Currency Converter
Convert between dozens of currencies using up-to-date exchange rates.