Everyday Calculators

Calculate gratuity, bill totals and equal per-person splits.

Calculate savings and final prices from percentage or fixed discounts.

Two packages can have very different shelf prices yet cost almost the same per unit.

Calculate sales tax, tax-inclusive totals and pre-tax prices.

Solve speed, distance or time when the other two values are known.

Travel time estimates how long a journey takes from distance and expected average speed.

Calculate price per unit for everyday planning and comparison.

Divides a shared bill among several people and can include tax, tip or unequal contributions when supported.

Tank fill time estimates how long a tank takes to fill from a known flow rate.

Estimates the billable shipping weight created by package size.

Estimates how long a file transfer will take from file size and connection throughput.

Derives display width, height or diagonal from aspect ratio and one known dimension.

Estimates how much water a swimming pool holds from its shape and dimensions.

Aspect ratio describes the proportional relationship between width and height.

Digital storage units are easy to mix up because decimal and binary conventions use similar names.

Temperature conversion moves a reading between Celsius, Fahrenheit, Kelvin and other supported scales.

Convert length between common units quickly and consistently.

Changes a mass or everyday weight value between units such as kilograms, grams, pounds, ounces and tonnes.

Convert volume between common units quickly and consistently.

Convert area between common units quickly and consistently.

Changes pressure values between units such as pascals, kilopascals, bar, psi and atmospheres.

Calculate vat for everyday planning and comparison.

Convert speed between common units quickly and consistently.

Convert energy between common units quickly and consistently.

Changes rates of energy transfer between units such as watts, kilowatts, megawatts and horsepower.

Changes force measurements between units such as newtons, kilonewtons, pound-force and kilogram-force.

Changes angular measurements between degrees, radians, gradians and other supported units.

Changes mass-per-volume measurements between units such as kg/m³, g/cm³, lb/ft³ and lb/gal where supported.

Changes durations between units such as seconds, minutes, hours, days, weeks and smaller or larger supported units.

Convert data transfer rate between common units quickly and consistently.

Estimates how much water a household, fixture, activity or system uses over time.

Convert flow rate between common units quickly and consistently.

Convert acceleration between common units quickly and consistently.

Changes rotational moment between units such as newton-metres, pound-feet, pound-inches and kilogram-force metres.

Calculate pixel density (ppi) for everyday planning and comparison.

Calculate image file size for everyday planning and comparison.

Estimates storage from bitrate and duration.

Estimates the network capacity required for simultaneous users, streams, transfers or applications.

Determines how much water to remove and replace for a chosen percentage change.

Estimates water capacity from tank dimensions and shape.

Relates digital image pixels to physical print dimensions.

Estimates storage from bitrate, duration, channel and encoding assumptions.

Estimates cumulative internet or mobile data consumed from activity rate and time.

Calculate dew point for everyday planning and comparison.

Converts image width and height in pixels into total pixel count and megapixels.

Estimates physical print dimensions from image pixel dimensions and a chosen pixel density.

Estimates a comfortable screen distance from television size and a chosen field-of-view or resolution guideline.

Relates image width, projector lens throw ratio and projector-to-screen distance.

Calculate screen resolution for everyday planning and comparison.

Calculate video bitrate for everyday planning and comparison.

Works with audio data rate, file size and duration.

Compares original and compressed file sizes to show how much storage was reduced.

Estimates how long a file may take to transfer from your device to a server or cloud service.

Simplifies width-to-height proportions and can derive screen width or height from a diagonal and ratio.

Converts digital pixel dimensions into physical inches using a specified pixel density.