Free Online Converters
& Calculators
Instant unit conversions, financial calculators, and text tools — no signup, no ads in the way.
Length Converter
mm, cm, m, km, in, ft, yd, mi
Weight Converter
mg, g, kg, oz, lb, ton
Temperature Converter
Celsius, Fahrenheit, Kelvin
Volume Converter
ml, L, tsp, tbsp, fl oz, cup, pt, qt, gal
Area Converter
cm², m², km², in², ft², acres, miles²
Speed Converter
mph, kph, m/s, knots
Data Size Converter
bits, bytes, KB, MB, GB, TB
Time Converter
ms, seconds, minutes, hours, days, weeks
Binary Converter
Binary ↔ Decimal ↔ Hex ↔ Octal
Base-N Converter
Convert between any number base
Color Converter
HEX ↔ RGB ↔ HSL ↔ CMYK
Currency Converter
Live exchange rates — 170+ currencies
Percentage Calculator
Percentages, increases, decreases
Tip Calculator
Bill split and tip amounts
Loan Calculator
Monthly payments and total interest
Compound Interest
Growth over time with compounding
Word Counter
Words, characters, sentences, reading time
Case Converter
UPPER, lower, Title, camelCase, snake_case
Lorem Ipsum Generator
Generate placeholder text by word or paragraph
String Reverse
Reverse text and palindrome checker