Free calculators
General calculators
Percentages, ratios, dates, time and everyday maths.
15 calculators
Percentage Calculator
Work out what one number is as a percentage of another, and what a given percentage of a number comes to..
Percentage Increase Calculator
Calculate the percentage increase between two numbers, and see what the new value would be after a given rise..
Percentage Decrease Calculator
Calculate the percentage decrease between two numbers, and what a value becomes after a given reduction..
Ratio Calculator
Simplify a ratio to its lowest terms and solve a proportion for the missing value..
Fraction Calculator
Add, subtract, multiply or divide two fractions and get the answer reduced to its lowest terms..
Average Calculator
Find the mean, median, range and total of any list of numbers.
Age Calculator
Work out an exact age in years, months and days from a date of birth, plus the next birthday..
Days Between Dates
Count the days, weeks and working days between any two dates..
Date Calculator
Add or subtract days, weeks or months from a date to find a deadline or start date..
Hours Calculator
Work out hours between a start and finish time, minus breaks, with the pay that comes to..
Time Calculator
Add or subtract two durations in hours, minutes and seconds..
Speed Calculator
Calculate average speed from a distance and a travel time..
Distance Calculator
Calculate the distance covered from a speed and a travel time..
Pace Calculator
Calculate your pace per mile or kilometre from a distance and a finish time, and see the equivalent speed..
Fuel Cost Calculator
Work out what a trip costs in fuel, and what that comes to across a fleet over a year..
Beyond the numbers
Tools that produce something you can send
Invoice Generator
Build a clean, itemised invoice and print it to PDF.
Open toolEstimate Generator
Turn a scope of work into a priced estimate the customer can approve.
Open toolWork Order Generator
Write the job down before the technician leaves: what, where, who, and what they need to take with them..
Open toolOther categories
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