Blood pressure falls into four categories: Normal (less than 120/80 mm Hg), Elevated (120-129 mm Hg/less than 80 mm Hg), Stage 1 hypertension (130-139 mm Hg/80-89 mm Hg), and Stage 2 hypertension (140 mm Hg or higher/90 mm Hg or higher). A reading above 180/120 mm Hg is a hypertensive emergency or crisis.