The unit converter for
everything, instantly.
Units Verse is a free online unit converter and conversion calculator for length, weight, temperature, area, volume, speed, data and 30+ more categories — accurate results with formulas, charts and tables, and no ads.
Most searched
Popular conversions
Browse
Every converter, one place.
Common
Length
Metres, miles, feet, inches and everything between.
Weight & Mass
Kilograms, pounds, ounces, tonnes and stones.
Temperature
Celsius, Fahrenheit, Kelvin and Rankine.
Area
Square metres, acres, hectares and square feet.
Volume
Litres, gallons, cups, millilitres and more.
Time
Seconds, minutes, hours, days and years.
Speed
km/h, mph, m/s, knots and Mach.
Engineering
Pressure
Pascals, bar, psi, atmospheres and torr.
Energy
Joules, calories, kWh, BTU and electronvolts.
Power
Watts, kilowatts, horsepower and BTU/hour.
Force
Newtons, pound-force, dynes and kilogram-force.
Torque
Newton-metres, foot-pounds and inch-pounds.
Density
kg/m³, g/cm³ and pounds per cubic foot.
Acceleration
m/s², g-force and feet per second squared.
Volume Flow Rate
Cubic metres, litres and gallons per second, minute or hour.
Mass Flow Rate
Kilograms, grams and pounds per second, minute or hour.
Electric Current
Amperes, milliamps, microamps and kiloamps.
Voltage
Volts, millivolts, kilovolts and megavolts.
Resistance
Ohms, kilohms, megohms and milliohms.
Capacitance
Farads, microfarads, nanofarads and picofarads.
Electric Charge
Coulombs, millicoulombs and microcoulombs.
Conductance
Siemens, millisiemens and microsiemens.
Inductance
Henries, millihenries and microhenries.
Digital
Scientific
31
Categories
354
Units
9,226+
Conversions
Why Units Verse
Built to be faster and cleaner than the rest.
Most converters bury the answer under ads and reloads. We put the result first and get out of your way.
Instant, no reloads
Every conversion happens as you type. No refreshes, no clutter, no waiting.
Bidirectional & shareable
Edit either field to convert both ways. Every result has a shareable link.
31 categories
Length, mass, temperature, data, speed and more — 354 units in one place.
Private & offline-ready
Runs entirely in your browser. No tracking, no accounts, no data leaves your device.
Frequently asked questions
Is Units Verse free?
Yes. Every converter and every conversion page is completely free, with no ads and no account required.
How accurate are the conversions?
Conversions use exact SI-based factors and high-precision arithmetic. You can adjust the displayed precision up to 10 decimal places.
Do I need an internet connection?
After your first visit the app works offline — conversions run entirely in your browser with no server round-trips.
Can I share or embed a conversion?
Every conversion has a shareable URL that restores the exact units and value. Conversion tables can be printed or exported to CSV.
The free online unit converter for every measurement
Units Verse is a free online unit converter built to give you fast, accurate answers for every kind of measurement. Whether you need a quickunit conversion for schoolwork, a precise conversion calculatorfor engineering, or a simple measurement converter for the kitchen, you canconvert units instantly — with no ads, no sign-ups, and no page reloads. Type a value and the result appears as you type, in either direction.
Every conversion category in one place
Units Verse works as an all-in-one unit calculator across more than thirty categories. Use the length converter for centimetres, metres, feet and miles; the weight converter and mass converter for kilograms, pounds, grams and ounces; and thetemperature converter for Celsius, Fahrenheit and Kelvin. You will also find an area converter, volume converter, speed converter, time converter, pressure converter, force converter, energy converter, power converter, torque converter, density converter, frequency converter, angle converter and fuel economy converter. For technical work there is a data storage converter and data transfer converter, plus electrical tools such as a voltage converter, electric current converter, resistance converter, capacitance converter, inductance converter and conductance converter. Scientific categories cover flow rate, mass flow, angular velocity, illuminance and luminous flux — making Units Verse a genuine engineering converter and scientific converter as well as an everyday measurement calculator.
Popular unit conversions
Some conversions come up again and again, so we make them one tap away. Jump straight tocm to inches, inches to cm, feet to meters, meters to feet, or km to miles. Convert kg to lbs, lbs to kg, grams to ounces, or stone to kg. Switch temperatures withcelsius to fahrenheit or fahrenheit to celsius, measure liquids with liters to gallons or ml to cups, and check speeds with mph to kmh. Working with digital sizes? Convert mb to gb, gb to mb, or mbps to gbps in a second. Every pair page includes the exact conversion formula, worked examples, and a fullunit conversion table.
Metric, imperial and SI units
Units Verse bridges the metric system and the imperial systemso you never have to guess. Conversions are defined against the International System of Units (SI units) and support US customary units and UK imperial units alike — which is why our converter knows the difference between a US gallon and a UK gallon. If you want to understand the numbers rather than just copy them, our conversion guidesexplain the metric system, SI units, conversion factors, and how to convert measurements step by step.
Accurate conversions with formulas and charts
Accuracy is the whole point. Every result uses exact, SI-anchoredconversion factors and high-precision arithmetic, and you can set the displayed precision up to ten decimal places. Alongside the calculator you get the conversion formula, a step-by-step explanation, a scaling chart and a conversion chartyou can print or export to CSV. Need to convert many values at once? The built-in batch converter turns a pasted list into a clean table instantly. Read more about how we calculate in our methodology.
Why choose Units Verse
As a fast, free and accurate unit converter, Units Verse loads instantly, works offline after your first visit, and keeps your data private in your browser. There are no pop-ups and no clutter — just the answer, a shareable link, and the reference you need. Bookmark Units Verse as your universal unit converter and conversion tool, andbrowse all converters to start converting length, weight, temperature, area, volume and more.
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Thousands of instant, accurate conversions — no sign-up, no ads.