I don't have a scale, so I cook using such a tool to measure volume (millilitres): When a recipe tells me to add 40g of granulated sugar, I check websites like this one to perform the conversion.
Handy conversions and equivalents for easier cooking
Cooking Measurements & Conversion Chart
Conversions - Bake & Cook on the App Store
Useful Units Recipe Converter on the App Store
Handy conversions and equivalents for easier cooking
Cooking Units Converter on the App Store
Useful Units Recipe Converter - Mobile App for Android and iOS
Kitchen Converter - Apps on Google Play
Useful Units Recipe Converter on the App Store
Useful Units Recipe Converter - Mobile App for Android and iOS
Converting Between Metric and Imperial Measures - Pastry & Baking
Extra Large Tall Food Storage Containers 7 qt/ 220oz/ 6.5L, For
Useful Units Recipe Converter - Mobile App for Android and iOS
Kitchen Converter - Apps on Google Play