UnitFlowPro

UnitFlowPro — Unit Converter

The last unit converter you'll ever need. 30+ categories, powerful tool cards, and a clean interface that gets out of the way. No ads. No subscription. Just a fast, capable converter that respects your time.

Paste & Convert
Copy a value from anywhere — a recipe, a weather app, a text message — and UnitFlowPro instantly detects it. One tap converts it in the right category automatically.

Favourites
Star the units you use every day. kg → lbs. Miles per hour. Fahrenheit. Starred units float to the top of every list so your most-used conversions are always one tap away.

Remembers Where You Left Off
Switch to Temperature, come back later, and UnitFlowPro opens exactly where you were. Every category remembers your last active unit.

30+ Conversion Categories
Length · Weight · Temperature · Volume · Speed · Area · Pressure · Energy · Data · Cooking · Time · Angle · Force · Power · Fuel Economy · Currency · Blood Glucose · 3D Printing · Electronics · Networking · Screen · Cannabis · Numeral Systems · Color · Fraction · Woodworking · Age · Shopping · and more.

Powerful Tool Cards
Go beyond simple conversions with built-in calculators:

BMI Calculator
Tip & Discount Calculator
Fuel Economy & Trip Cost
Pace Calculator (running, cycling, swimming)
Time Zone Converter
Age Calculator
EV Charging Estimator
Ohm's Law Solver
Paint & Flooring Estimator
Concrete Calculator
Recipe Scaler
Screen PPI & Aspect Ratio
Transfer Time Calculator
Unit Price Comparator
Expression Calculator
Type mixed-unit expressions like 2 ft + 6 in + 5 cm and get an instant result. Supports +, −, ×, ÷, parentheses, and unit suffixes.

Built for Daily Use

Live currency rates with offline fallback
Conversion history with pins, notes, and restore
iCloud sync across all your Apple devices
Siri & Shortcuts integration — just say "convert 12 feet to meters"
Spotlight deep links — search any category from the home screen
Share conversions as images
Comparison charts across all units
Category reordering and hiding
Dark, Light, and System appearance modes
Dynamic Type and VoiceOver accessibility support
Mac Catalyst support
No Ads. No Subscription. No Nonsense.
UnitFlowPro is a one-time purchase. Everything included, forever.