Calculations & units
Everyday answers, useful comparisons and precise conversions.
Acceleration Converter
Tool: Calculations & unitsConvert acceleration between clearly labelled metric, imperial and specialist units.
Angle Converter
Tool: Calculations & unitsConvert angle between clearly labelled metric, imperial and specialist units.
Area Converter
Tool: Calculations & unitsConvert area between clearly labelled metric, imperial and specialist units.
Data Rate Converter
Tool: Calculations & unitsConvert data rate between clearly labelled metric, imperial and specialist units.
Density Converter
Tool: Calculations & unitsConvert density between clearly labelled metric, imperial and specialist units.
Digital Storage Converter
Tool: Calculations & unitsConvert digital storage between clearly labelled metric, imperial and specialist units.
Discount and Savings Calculator
Tool: Calculations & unitsFind the final price and saving after a percentage discount.
Electricity Running Cost
Tool: Calculations & unitsEstimate an appliance's energy use and cost from wattage and operating time.
Energy Converter
Tool: Calculations & unitsConvert energy between clearly labelled metric, imperial and specialist units.
File Transfer Time Calculator
Tool: Calculations & unitsEstimate transfer duration from file size, connection speed and usable throughput.
Force Converter
Tool: Calculations & unitsConvert force between clearly labelled metric, imperial and specialist units.
Frequency Converter
Tool: Calculations & unitsConvert frequency between clearly labelled metric, imperial and specialist units.
Fuel Economy Converter
Tool: Calculations & unitsConvert fuel economy between clearly labelled metric, imperial and specialist units.
Geometry Calculator
Tool: Calculations & unitsCalculate area, perimeter or volume for common shapes from their dimensions.
Gross pay and pro rata salary calculator
Tool: Calculations & unitsConvert an annual salary to a pro rata gross salary and an hourly equivalent using your hours.
Group expense and settlement calculator
Tool: Calculations & unitsSplit shared expenses and show who owes whom, reconciling every penny in one currency.
Length Converter
Tool: Calculations & unitsConvert length between clearly labelled metric, imperial and specialist units.
Markup and Margin Calculator
Tool: Calculations & unitsCalculate profit, markup and margin from cost and selling price.
Mass Converter
Tool: Calculations & unitsConvert mass between clearly labelled metric, imperial and specialist units.
Power Converter
Tool: Calculations & unitsConvert power between clearly labelled metric, imperial and specialist units.
Pressure Converter
Tool: Calculations & unitsConvert pressure between clearly labelled metric, imperial and specialist units.
Running Pace and Race Time
Tool: Calculations & unitsCalculate pace, speed and projected race times from a completed distance and duration.
Scale model calculator
Tool: Calculations & unitsConvert a real measurement to a scale drawing or model, convert back, or resize between two model scales.
Speed Converter
Tool: Calculations & unitsConvert speed between clearly labelled metric, imperial and specialist units.
Temperature Converter
Tool: Calculations & unitsConvert temperature between clearly labelled metric, imperial and specialist units.
Tip and Bill Split Calculator
Tool: Calculations & unitsCalculate a tip and split the total fairly down to the final penny.
Torque Converter
Tool: Calculations & unitsConvert torque between clearly labelled metric, imperial and specialist units.
Trip Fuel Cost Calculator
Tool: Calculations & unitsEstimate trip fuel and cost from distance and fuel economy.
Unit Price Comparison
Tool: Calculations & unitsCompare two pack prices on the same quantity basis and see the cheaper option.
VAT calculator with your rate
Tool: Calculations & unitsAdd or remove VAT using a percentage you enter, with separate net, VAT and gross amounts.
Volume Converter
Tool: Calculations & unitsConvert volume between clearly labelled metric, imperial and specialist units.
Acceleration Converter
Convert acceleration between clearly labelled metric, imperial and specialist units.
Angle Converter
Convert angle between clearly labelled metric, imperial and specialist units.
Area Converter
Convert area between clearly labelled metric, imperial and specialist units.
Data Rate Converter
Convert data rate between clearly labelled metric, imperial and specialist units.
Density Converter
Convert density between clearly labelled metric, imperial and specialist units.
Digital Storage Converter
Convert digital storage between clearly labelled metric, imperial and specialist units.
Discount and Savings Calculator
Find the final price and saving after a percentage discount.
Electricity Running Cost
Estimate an appliance's energy use and cost from wattage and operating time.
Energy Converter
Convert energy between clearly labelled metric, imperial and specialist units.
File Transfer Time Calculator
Estimate transfer duration from file size, connection speed and usable throughput.
Force Converter
Convert force between clearly labelled metric, imperial and specialist units.
Frequency Converter
Convert frequency between clearly labelled metric, imperial and specialist units.
Fuel Economy Converter
Convert fuel economy between clearly labelled metric, imperial and specialist units.
Geometry Calculator
Calculate area, perimeter or volume for common shapes from their dimensions.
Gross pay and pro rata salary calculator
Convert an annual salary to a pro rata gross salary and an hourly equivalent using your hours.
Group expense and settlement calculator
Split shared expenses and show who owes whom, reconciling every penny in one currency.
Length Converter
Convert length between clearly labelled metric, imperial and specialist units.
Markup and Margin Calculator
Calculate profit, markup and margin from cost and selling price.
Mass Converter
Convert mass between clearly labelled metric, imperial and specialist units.
Power Converter
Convert power between clearly labelled metric, imperial and specialist units.
Pressure Converter
Convert pressure between clearly labelled metric, imperial and specialist units.
Running Pace and Race Time
Calculate pace, speed and projected race times from a completed distance and duration.
Scale model calculator
Convert a real measurement to a scale drawing or model, convert back, or resize between two model scales.
Speed Converter
Convert speed between clearly labelled metric, imperial and specialist units.
Temperature Converter
Convert temperature between clearly labelled metric, imperial and specialist units.
Tip and Bill Split Calculator
Calculate a tip and split the total fairly down to the final penny.
Torque Converter
Convert torque between clearly labelled metric, imperial and specialist units.
Trip Fuel Cost Calculator
Estimate trip fuel and cost from distance and fuel economy.
Unit Price Comparison
Compare two pack prices on the same quantity basis and see the cheaper option.
VAT calculator with your rate
Add or remove VAT using a percentage you enter, with separate net, VAT and gross amounts.
Volume Converter
Convert volume between clearly labelled metric, imperial and specialist units.