The rupee today strengthened by 11 paise to 54.73 against the US dollar in early trade at the Interbank Foreign Exchange, aided by selling of the American currency by exporters and banks and strong capital inflows. Besides, a higher opening in the domestic equity market and continued capital inflows, strengthening of the euro against the dollar overseas, also supported the rupee.The rupee had gained 11 paise to end at one-week high of 54.84 against the US dollar in yesterday's trade on sustained selling of the US dollar by exporters and capital inflows.