🔄 Unit Conversion Tools

Unit Converters

Length, weight, temperature, speed, data storage, energy and more — all free, instant conversions in your browser.

100% browser-based
100% free & private
Instant results
⚖️ Physical Units
📏
Length Converter
km, m, cm, miles, feet, yards, inches and more.
LengthDistanceMetric
Open tool
⚖️
Weight Converter
kg, g, lb, oz, stone, ton conversions.
WeightMasskg
Open tool
🌡️
Temperature Converter
Celsius, Fahrenheit, Kelvin, Rankine.
TemperatureCelsiusFahrenheit
Open tool
📐
Area Converter
m², ft², acre, hectare, km² conversions.
AreaAcresHectare
Open tool
🧪
Volume Converter
Litres, gallons, cups, fl oz conversions.
VolumeLitresGallons
Open tool
💨
Speed Converter
km/h, mph, m/s, knots, Mach conversions.
Speedkm/hmph
Open tool
⚡
Energy Converter
joules, calories, kWh, BTU, eV conversions.
EnergyJouleskWh
Open tool
🔩
Pressure Converter
Pa, bar, psi, atm, Torr, mmHg conversions.
PressurePSIBar
Open tool
📐
Angle Converter
Degrees, radians, gradians, arcminutes.
AngleDegreesRadians
Open tool
💾 Digital & Data
⏱️
Time Converter
ms, seconds, minutes, hours, days, years.
TimeHoursSeconds
Open tool
💾
Data Storage Converter
B, KB, MB, GB, TB, PB, binary units.
DataMBGB
Open tool
🔢
Number Base Converter
Binary, Octal, Decimal, Hexadecimal, Base-36.
BinaryHexDecimal
Open tool
🥄 Cooking & Lifestyle
⛽
Fuel Efficiency Converter
mpg (US/UK), L/100km, km/L conversions.
FuelMPGkm/L
Open tool
🥄
Cooking Measurements
cups, tbsp, tsp, ml, fl oz conversions.
CookingCupsGrams
Open tool

Free Unit Converters — Accurate, Instant, No Signup

ToollyX offers 14 free unit conversion tools covering every measurement type you need for daily life, travel, science and cooking. All converters support bidirectional input — type in any field and all others update instantly. Every conversion factor follows SI (International System of Units) standards and internationally recognised definitions.

Physical Unit Conversions

The Length Converter handles kilometres, metres, centimetres, miles, feet, yards and inches. The Temperature Converter converts between Celsius, Fahrenheit, Kelvin and Rankine. The Weight Converter supports kilograms, grams, pounds, ounces, stone and tonnes.

Digital and Data Conversions

The Data Storage Converter covers bytes, kilobytes, megabytes, gigabytes, terabytes and petabytes in both decimal (SI) and binary (IEC) standards. The Number Base Converter converts between binary, octal, decimal, hexadecimal and Base-36.

  • All conversions use full floating-point precision.
  • Results update in real time as you type — no calculate button needed.
  • All converters work offline after the first page load.
  • No personal data is collected or stored.

Frequently Asked Questions