Utilities
Currency Converter
Converted amount = source amount × entered exchange rate × (1 − fee%).
Editable assumptions
The calculator collection
Other Tools
Calculate dates, conversions, discounts, fuel costs and everyday numbers.
Utilities
Tip Calculator
Tip = bill × tip percentage.
Ready to calculate
Utilities
Discount and Tax Calculator
Discounted price = original × (1 − discount%).
Ready to calculate
Utilities
Date Difference Calculator
Elapsed calendar days = end date − start date, excluding the start date.
Ready to calculate
Utilities
Fuel Cost Calculator
Fuel needed = distance / kilometres per litre.
Ready to calculate
Utilities
Unit Converter
Uses exact metric definitions: mile = 1.609344 km; pound = 0.45359237 kg; inch = 2.54 cm; US gallon = 3.785411784 litres.
Ready to calculate
Utilities
Age Calculator
Calculate exact age from birth date to today or any target date.
Coming soon
Utilities
Time Calculator
Convert and compare durations across hours, minutes, and seconds.
Coming soon
Utilities
GPA Calculator
Estimate grade point average from courses and credit hours.
Coming soon
Utilities
Password Generator
Create strong password options for safer account setup.
Coming soon
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See each calculator for its supported scope and assumptions.