Our calculator is designed to let you convert between or within two systems of measurements, (U.S. inch/pound and Metric), with the touch of a single key. It is unlike all other conversion calculators that require programming, prior knowledge of conversion factors and formulas, or memorization of complicated menus and shift key sequences. Our 1-Step calculator is designed from the ground up to make the whole process

Our customers in industry, government, education, and at home have found the 1-Step indispensable and we are certain that you will too. We guarantee your satisfaction or your money back! If the product does not meet your expectations we will take it back within 30 days of purchase and issue a full refund (less shipping & handling). Simply fill out an RMA Request for return instructions. You must maintain the product in resalable condition with all packaging and accessories.

We guarantee the product to be free of defects for a full year of normal use. If you experience problems with the product within the first year of use we will repair or replace the 1-Step at no charge. Simply fill out an RMA Request for return instructions. You will need your invoice or another way to establish the date of purchase.