17 cm. Nothing stacks up to Chinet. Microwavable. Leak & cut resistant. Allergen free. BPI: Compostable in industrial facilities. Check locally, as these do not exist in many communities. Based on additional testing, Classic White Chinet paper plates are also suitable for backyard composting. Questions? 1.800.847.4129. Visit us at www.mychinet.com for recipes & entertaining ideas. Eco-friendly. Made from recycled material and compostable. Made in USA.