About The Ultimate Converter

The Ultimate Converter is a free, all-in-one conversion site built on a simple idea: you should be able to handle every conversion you need in one place and be ready to go in five minutes or less.

What you'll find here

• A search-style quick converter. Type "3 cups to ml" or "20 psi to bar" and get the answer instantly, with the formula.
• Kitchen tools for cups, spoons, grams, oven temperatures and ingredient-specific cups-to-grams conversions.
• Health conversions, including A1C to average glucose and mg/dL to mmol/L for common lab tests.
• Chemistry and lab technician calculators: molarity, dilutions, grams and moles, centrifuge RPM and RCF, serial dilutions, cell counts and metric prefixes.
• A currency converter with daily reference rates for more than 160 currencies.
• Every everyday unit: length, weight, volume, temperature, area, speed, time, data, energy, power, pressure, fuel economy and angle.

Fast, private and free

Every calculation runs right in your browser. There's no sign-up and nothing to install, and the page works on phones, tablets and computers.

Our sister sites

Need your nutrition numbers? Try our free macro calculator. Stocking your kitchen or home gym? See Agnes Essentials for hand-picked Top 10 lists.