Accepted answer

You can do this by explicitly overriding the lang.numericSymbols* with null in the defaultOptions as follows

    lang: {
        numericSymbols: null //otherwise by default ['k', 'M', 'G', 'T', 'P', 'E']

The documentation reads as follows

numericSymbols: Array<String>

Metric prefixes used to shorten high numbers in axis labels. Replacing any of the positions with null causes the full number to be written. Setting numbericSymbols to null disables shortening altogether. Defaults to ['k', 'M', 'G', 'T', 'P', 'E'].

**officially available from v1.2.0 (2012-08-24)
This won't work before v1.2.0 as the suffixes were hard coded then.*

Alternate solution

(Should work on all versions that support formatter)

Use yAxis.labels.formatter and return the value as it is

yAxis: {
    labels: {
        formatter: function () {
            return this.value;

Disabling metric notation on axis values | Highchart & Highstock (v1.2+) @ jsFiddle
Disabling metric notation on axis values | Highchart & Highstock (old versions) @ jsFiddle


Based on the answer of @Jugal-Thakkar, I implemented:

numericSymbols: [' × 10³', ' × 10⁶', ' × 10⁹', ' × 10¹²', ' × 10¹⁵', ' × 10¹⁸'],

The superscripts 0 and 4-9 are UTF-8 characters only. You need to specify a font that supports these, as otherwise you will have font-substitution issues, as described in Why the display of Unicode characters for superscripted digits are not at the same height?.

I use:

font-family: Lucida Sans Unicode, Arial Unicode MS, Cambria, Calibri, Consolas;

Also, I would rather have 1.8 × 10¹⁴ than 180 × 10¹², but is better than 180000000000000, which is hard to read.

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