Tools
Every HeightViz tool draws to one accurate scale. Pick the one for the job.
This is every tool HeightViz has built, grouped by what you are trying to do. They share one measurement engine — centimetres are the only stored value — and one comparison engine, so a height entered in one tool means the same thing in all of them. Nothing here asks you to sign in, and every published figure carries the source it was read from and the day it was checked.
Compare
Put two or more subjects on one board, at one scale, from a common ground line.
- Height ComparisonCompare the heights of up to 10 people side by side on one accurate scale.
- Height Comparison ChartBuild a shareable height chart for friends, family or a team.
- Size ComparisonCompare people with animals, objects, vehicles and buildings.
- Planet Size ComparisonThe planets, the Moon and Pluto as discs on one scale, from NASA's diameters.
Visualize
See what a set of measurements looks like on a body rather than as numbers.
Calculate
Work out a single answer — a difference, a conversion, an index or an estimate — and see it drawn.
- Height Difference CalculatorTwo heights in any unit, the difference in every unit, drawn to scale.
- Height ConverterConvert between cm, metres, feet and inches, with a reference table.
- BMI CalculatorBody mass index from height and weight, with the published ranges.
- Height PredictorEstimate a child's adult height from both parents' heights with the published mid-parental method.
- Height Percentile CalculatorA child's height percentile and z-score for their age on the WHO or CDC reference.
Reference
Look up published figures: charts and datasets with their source and check date attached.
Looking for people, animals or objects instead? The people, animals and objects directories list every sourced entry, and the comparisons index puts two of them side by side.