All-in-One Unit Converter

Type into any box. All other units update automatically.

Instant multi-unit conversion

Convert length, area, temperature, volume, mass, data, speed and time in one place. Designed for students, engineers, real estate, import/export, study, and everyday use.

Length

mm, cm, m, km, in, ft, yd, mi, NM, mil

Millimetresmm

Centimetrescm

Metresm

Kilometreskm

Inchesin

Feetft

Yardsyd

Milesmi

Nautical milesNM

Milsmil

Area

m², ft², in², cm², acre, ha, a, 坪

Square metresm²

Square feetft²

Square inchesin²

Square centimetrescm²

Acresac

Hectaresha

Aresa

Tsubo (坪)tsubo

Temperature

°C, °F, K

Celsius°C

Fahrenheit°F

KelvinK

Volume

US/UK gal, L, mL, cc, m³, in³, ft³

US gallonsgal (US)

UK gallonsgal (UK)

LitresL

MillilitresmL

Cubic centimetrescc

Cubic metresm³

Cubic inchesin³

Cubic feetft³

Mass

g, kg, oz, lb, t, UK t, US t

Gramsg

Kilogramskg

Ouncesoz

Poundslb

Metric tonst

UK tonst (UK)

US tonst (US)

Data

bit, B, KB/KiB, MB/MiB, GB/GiB, TB/TiB

Bitsbit

BytesB

KilobytesKB

KibibytesKiB

MegabytesMB

MebibytesMiB

GigabytesGB

GibibytesGiB

TerabytesTB

TebibytesTiB

Speed

m/s, m/h, km/s, km/h, in/s, in/h, ft/s, ft/h, mi/s, mi/h, kn

Metres per secondm/s

Metres per hourm/h

Kilometres per secondkm/s

Kilometres per hourkm/h

Inches per secondin/s

Inches per hourin/h

Feet per secondft/s

Feet per hourft/h

Miles per secondmi/s

Miles per hourmi/h

Knotskn

Time

ms, s, min, h, d, wk

Millisecondsms

Secondss

Minutesmin

Hoursh

Daysd

Weekswk

Calculator & Tools

Standard calculator plus quick finance & daily helpers

Basic Calculator Tap buttons to calculate

Percentage of a Number

Example: 15% of 200

Percentage Change

Shows increase or decrease in %.

Discount Price

Useful for sales and offers.

Tax Added Price

Total after adding tax.

Bill Split & Tip

Shows tip + per-person amount.

Loan Monthly Payment

Standard amortised EMI.

Savings Per Month

How much to save each month.

BMI Calculator

Body Mass Index (approximate).

Fuel Economy

Shows km/L and L/100km.

Unit Price

Price per item or per unit.

Real Estate Yield

Yield = rent ÷ price × 100.

Date Difference

Number of days between two dates.

Currency Conversion (Manual)

You set the rate yourself.

Travel Time

Outputs hours and minutes.

Quick Notes

Saved in this browser only (local).

About Privacy Policy Contact

About This Converter

This multi unit converter is built to handle daily and professional work: real estate, construction, engineering, import/export, study, and travel. You can switch between categories and convert multiple units at the same time.

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Contact

For feedback, bug reports, or business enquiries, please contact:

Email: areastarconverter@outlook.com