Grams to Grains (gr to grn) is a super fast and very simple one by one weight unit converter and calculator app. You can easily convert Grams to Grains (gr to grn) and Grains to Grams (grn to gr) with this app You type the number kilometer input instantly calculate and convert to grn or Grains input instantly convert to kilometer One by One Weight Converter Features - Instantly converts units - Simple and Good Looking UI - Small Installation Size - No Need Internet - Touch Grams input box,