Wikipedia:Styletips/9

{{center|Unit symbols: spacing}}

Values and unit symbols are separated by a space (preferably a non-breaking space):

• Correct: {{xt|5 min}}, {{xt|3 lb}}, {{xt|90 °C}}
• Incorrect: {{!xt|5min}}, {{!xt|3lb}}, {{!xt|90°C}}

Only angular and coordinate degrees, and the percent sign, are unspaced:

• {{xt|90°}} (a right angle), {{xt|76%}}