Conversion

Convert miles and nautical miles with exact formulas, back-checks, meters, kilometers, and a quick reference table.

Convert standard or troy ounces to milligrams and avoid mixing up mass ounces with fluid ounces.

Convert milligrams to ounces or ounces to milligrams with clear rounding, scientific notation, and a mass-ounce note.

Convert kilograms to milligrams. Enter decimals, scientific notation, grouped numbers, or a kg suffix for a copy-ready mg result.

Convert mg to kg or kg to mg with clear steps, decimal rounding, and scientific notation for very small or large values.

Convert square inches to hectares or hectares to square inches with clear decimal and scientific notation results.

Convert square inches to square meters or reverse it, choose decimal places, and see the exact factor and formula used.

Convert square yards to square inches or reverse it, with the exact 1,296 factor and simple area conversion steps.

Convert square inches to square yards or reverse it, and check the math with the exact divide-by-1296 rule.

Convert quarts to tablespoons or tablespoons to quarts with US liquid, US dry, imperial, or metric tablespoon options.