Metric-Imperial Converter Example usage /api/convert?input=4gal /api/convert?input=1/2km /api/convert?input=5.4/3lbs /api/convert?input=kg Example return { initNum: 3.1, initUnit: 'mi', returnNum: 4.98895, returnUnit: 'km', string: '3.1 miles converts to 4.98895 kilometers' }