Kalc 4+

Simple Unit Converter and Calc


Designed for iPhone

    • 4.4 • 10 Ratings
    • Free

iPhone Screenshots


Kalc is a simple, extremely user-friendly unit converter and calculator app for your everyday life.

• Beautiful, simple, minimal and flat design.
• Tap and get the result immediately.
• Reuse past search history up to 100 results.
• Hold the number to copy & paste.
• Swipe the result left to clear.
• Swipe the histories right to clear all.

• Over 88 units in 8 categories.
• 8 shortcuts for practical unit conversion.
• Reverse by tapping the other side of the unit.
• Easy-to-use editable simple string calculation.

• 20 well-selected flat colors to fit your fashion.
• Swipe the keypad up to open the color selector.
• Swipe the color selector to change the color.
• Hold the color selector to view all colors.

• Swipe the keypad down to open support menu.

• Supported units (*=UK)
mm, cm, m, km,
in, ft, yd, mi, nmi, pt, pc,
寸, 尺, 丈, 間, 町, 里, 海里
mm2, cm2, m2, km2,
sqin, sqft, sqyd, sqmi, ha, acre,
坪, 畝, 反, 町
mg, g, kg, tonne,
oz, lb, stone, ton, ton*,
匁, 両, 斤, 貫
cc, ml, dl, l, cm3, m3, in3, ft3,
tsp, tbsp, oz, cp, pt, qt, gal,
tsp*, tbsp*, oz*, cp*, pt*, qt*, gal*,
合, 升, 斗, 石
C, F, K
ms, s, min, hour, day, week, year
m/s, km/h, fps, mph, kt
16:9, 4:3, 1:1.6, 1:1.4

We appreciate your feedback greatly =)


Designed by YUTA OKAJIMA

What’s New

Version 1.3.4

This app has been updated by Apple to display the Apple Watch app icon.

64 bits support.

Ratings and Reviews

4.4 out of 5
10 Ratings

10 Ratings

gcdean ,

Thanks for the update and tip!

This is a great little app. Very easy to use.

While I still like this app, it needs an update, iOS keeps telling me im the app is being inefficient

@hunter_green ,

I love this app!

Please update for iOS 17! I use this for all my accounting work! I’ve been using this since 2013… :) lovely app

tiryaki ,

Minus Five Fahrenheit!

Probably they forgot to make a unit minus; like fahrenheit or celsius minus five! The polar vortex reminded us that we, on some day, need to put a minus before 5..

App Privacy

The developer, YUTA OKAJIMA, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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