Popular Calculators

The calculators people open first.

A selection of the most-used of the 300+ calculators on Byte Pad. Each one shows its formula, its units and what the result leaves out.

Browse all calculators

Networks & IT

Packet loss, subnetting and conversions: the numbers that keep a network honest.

Packet Loss CalculatorMeasure what a lossy link does to voice and video quality. Network Subnet CalculatorSplit a block into subnets and see the usable host ranges. VLAN CalculatorWork out subnet sizes, VLAN IDs and interface plans for a segmented network. Hex to Decimal CalculatorConvert between hex, decimal and binary with the working shown. JSON Size CalculatorMeasure the byte size of a JSON payload before you ship it over the wire.

Science & lab

Chemistry and physics with the equation on the page, not hidden behind a button.

Molar Mass CalculatorSum atomic weights into the mass of one mole of any compound. pH CalculatorTurn concentration into pH, or pH back into concentration. Specific Heat CalculatorWork out the energy needed to change a material's temperature. Percent Yield CalculatorCompare the yield you actually got with the yield the equation promised. Cone CalculatorGet volume, slant height and surface area of a cone from any two inputs.

Home & workshop

Materials, areas and clearances for the job you are doing yourself.

Roofing CalculatorEstimate squares, bundles and waste for a re-roofing job. Roof Load CalculatorCheck dead and live loads on a roof against the span it has to carry. Pipe Sizing CalculatorMatch pipe diameter to flow rate and acceptable head loss. Outlet Placement CalculatorPlan outlet spacing to code for a room layout. Lawn Area CalculatorMeasure an irregular lawn and size fertilizer or seed orders. Vinyl Flooring CalculatorCount planks, boxes and offcuts for a room measured to the inch. Tree Height CalculatorEstimate a tree's height from a shadow, a clinometer or a friend and a tape. Terrarium Size CalculatorWork out floor space and volume for a species before you buy the glass. Pottery Clay Weight EstimatorEstimate clay weight per piece from the thrown dimensions and wall thickness.

Farm & garden

Bench space, ventilation and draw-bar pull for growers and smallholders.

Greenhouse Area CalculatorWork out bench space, walkways and total floor area. Poultry House Ventilation CalculatorSize fans and inlets for the number of birds and the season you face. Tractor Horsepower Requirement CalculatorMatch implement draft to the horsepower a tractor really needs.

Vehicles & travel

Towing, journey times and load placement, checked before you set off.

Towing Capacity CalculatorCheck trailer weight against vehicle ratings before you hitch up. Trip Distance CalculatorAdd legs, breaks and fuel stops into a realistic journey time. Weight Distribution CalculatorPlace cargo so the tow ball weight and axle loads stay legal. Luggage Weight Allowance CalculatorSplit an airline allowance across bags before the check-in counter.

Math & units

Conversions and geometry you will reach for more than once.

Unit Conversion CalculatorConvert length, mass, volume and temperature in one place. Slope CalculatorGet grade, angle and rise over run from two points. Ratio CalculatorSolve a:b = c:d for the missing term, with the cross-multiplication shown.

Photography & optics

Depth of field and field of view, worked out for the sensor you actually own.

Hyperfocal Distance CalculatorSet the focus distance that keeps everything from here to infinity sharp. Crop Factor CalculatorSee the real field of view of a lens on a cropped sensor.