Access essential calculators and visual unit adaptors for everyday life in California in one convenient place.
Intuitive visual adaptors for °F, lbs, gallons, and sq ft with real-life object illustrations — plus an AI photo scanner that finds and converts US units for you.
Pre-tax tip calculations, $1 clean round-up, n-way bill splitting, and instant shareable summaries.
Fahrenheit (°F) ⇄ Celsius (°C) · Oven baking (350°F), thermostat (72°F), body temp & weather
Pounds (lb) & Ounces (oz) ⇄ Kilograms (kg) & Grams (g) · Grocery produce ($/lb), quarter pounder, parcels
Gallons (gal) & Fluid Ounces (fl oz) ⇄ Liters (L) & Milliliters (mL) · Gas prices, milk jugs, cafe drinks
Feet/Inches (5'9") & Miles (mi/mph) ⇄ Centimeters (cm) & Kilometers (km/h) · Driver's license height, speed limits
Square Feet (sq ft) ⇄ Pyeong & Square Meters (m²) · Rental 1B1B (700 sqft), studio floor plans
PSI ⇄ Bar & Kilopascals (kPa) · Gas station tire inflator standards and passenger vehicle optimal pressure
Numbers work differently in American daily life, starting with the units. Ovens read in Fahrenheit, grocery scales in pounds, and road signs in miles. Instead of searching the web every time one of those numbers shows up, the tools on this page let you convert and calculate everything in one place.
Every tool is free and requires no sign-in. Conversion factors come from values certified by the National Institute of Standards and Technology (NIST) and California's Division of Measurement Standards (CDFA), and the tip calculator reflects common US tipping practice — 15 to 20 percent of the pre-tax amount.