Ahmed Khan is thought of as Pakistan's greatest living calligraphic artist. His work comprises overlaid calligraphic designs based on silver foil pressed on canvas which with a sprinkle of chemicals turns them into vibrant colours. His calligraphic forms are meticulously applied on this base. Ahmed Khan's renditions spark with spirituality. It is the oneness of God and a matter of peace which takes place on his canvases.  At every exhibition he comes up with new compositions. One finds ovals, circles and semi circles with splashes of mystifying light creating an impression close to what Khan is going through metaphysically. Another obvious symbol on his canvases is a seal. This small motif in various colours as per requirement of colour aesthete adds beauty as well as sanctity to the paintings. Earlier, in his talks the stress was on the colour and technicalities of his paintings. With passing years, he tends more towards philosophizing upon metaphysical element in his work. Besides his concept, Khan's compositions, his lettering and colours appeal to the eye and render a value for the future.