MeasureCalc

Unit Converter

Instant conversions across 10 categories. Type a value, pick units, get the answer.

Tip: You can also use clean URLs like /convert/meter-to-foot/2.5.

Browse by category

Length Mass Temperature Volume Area Speed Pressure Energy Power Time Epoch converter Time zone converter Time difference Bytes converter

Popular time-zone pairs

Quick links to open the converter with preselected zones.

Popular conversions

All units

Area
  • Acre (acre)
  • Hectare (ha) (ha)
  • Square foot (ft²) (ft2)
  • Square kilometer (km²) (km2)
  • Square meter (m²) (m2)
  • Square yard (yd²) (yd2)
Energy
  • BTU (IT) (btu)
  • Calorie (cal) (cal)
  • Joule (J) (j)
  • Kilocalorie (kcal) (kcal)
  • Kilowatt-hour (kWh) (kwh)
  • Watt-hour (Wh) (wh)
Length
  • Centimeter (cm) (cm)
  • Chain (ch) (ch)
  • Foot (ft) (ft)
  • Furlong (fur) (fur)
  • Inch (in) (in)
  • Kilometer (km) (km)
  • Meter (m) (m)
  • Mile (mi) (mi)
  • Millimeter (mm) (mm)
  • Nautical mile (nmi) (nmi)
  • Rod (rd) (rd)
  • Yard (yd) (yd)
Mass
  • Gram (g) (g)
  • Kilogram (kg) (kg)
  • Long ton (UK) (lt)
  • Milligram (mg) (mg)
  • Ounce (oz) (oz)
  • Pound (lb) (lb)
  • Slug (slug)
  • Stone (st) (st)
  • Tonne (t) (t)
Power
  • Horsepower (metric) (hp)
  • Kilowatt (kW) (kw)
  • Watt (W) (w)
Pressure
  • Bar (bar)
  • Pascal (Pa) (pa)
  • Pounds per square inch (psi) (psi)
  • Standard atmosphere (atm) (atm)
  • Torr (torr)
Speed
  • Kilometers per hour (km/h) (kmh)
  • Knot (kn) (knot)
  • Mach (sea-level approx.) (mach)
  • Meters per second (m/s) (ms)
  • Miles per hour (mph) (mph)
Temperature
  • Celsius (°C) (celsius)
  • Fahrenheit (°F) (fahrenheit)
  • Kelvin (K) (kelvin)
  • Rankine (°R) (rankine)
Time
  • Day (day)
  • Hour (h) (h)
  • Minute (min) (min)
  • Second (s) (s)
  • Week (week)
  • Year (365 d) (year)
Volume
  • Barrel (oil, bbl) (bbl)
  • Cubic foot (ft³) (ft3)
  • Cubic inch (in³) (in3)
  • Cubic meter (m³) (m3)
  • Cup (US) (cup)
  • Imperial gallon (gal UK) (gal_uk)
  • Liter (L) (l)
  • Milliliter (mL) (ml)
  • Pint (US pt) (pt)
  • Quart (US qt) (qt)
  • Tablespoon (US) (tbsp)
  • Teaspoon (US) (tsp)
  • US gallon (gal) (gal)

What is MeasureCalc?

MeasureCalc is a fast and free online unit converter. You can instantly convert between hundreds of units across 10 categories: length, mass, volume, temperature, area, speed, pressure, energy, power, and time.

Unlike static conversion tables, MeasureCalc uses precise conversion factors and supports custom precision up to 12 decimal places. You can bookmark your favorite conversions or share direct links with colleagues and friends.

How to use MeasureCalc

  1. Enter the value you want to convert.
  2. Select the source unit and the target unit.
  3. Click Convert to instantly see the result.

You can also use clean URLs like /convert/meter-to-foot/2.5 to share exact conversion results.

Frequently Asked Questions

Is MeasureCalc free?

Yes, MeasureCalc is completely free to use. There are no registration or subscription fees.

Are the conversions accurate?

All conversions are based on official definitions (e.g., 1 inch = 25.4 mm exactly, 1 foot = 0.3048 m exactly). For temperature conversions we use exact formulas with offsets.

Can I link to a specific conversion?

Yes, every result page has a shareable URL. You can copy it from the browser address bar or use the "Share this conversion" link on the page.