About Curta Calculators

A Curta Calculator

A Curta Calculator

What is a Curta Calculator?

A Curta Calculator is a hand-cranked mechanical calculator that fits in the palm of your hand. It was originally sold in 1948 and performs addition, subtraction, multiplication & division operations, With some skill, it is even possible to compute advanced mathematics such as square roots and other operations.

What's amazing about a Curta Calculator is that the entire device operates completely on mechanical power without any electricity to accurately compute an equation. The Curta Calculator utilizes a symphony of gears, sliders & drums to find the solution. Considering it predated most computers, the Curta Calculator is an amazing piece of collectible period engineering.

For a demonstration of the operation of a Curta Calculator, we suggest you check out this video.

Curta Calculators were made in two distinct models: Type 1 and Type 2.

  • Type 1 Curta Calculators are the smaller of the two models and are made of either plastic or metal. Type 1 Curta Calculator models have 8 input registers, a 6 digit crank turn register, and an 11 digit result register. They weigh approximately 8 ounces and were originally sold with a plastic or metal carrying case.
  • Type 2 Curta Calculators are the larger of the two models and are made of either plastic or metal. Type 2 Curta Calculator models have 11 input registers, a 8 digit crank turn register, and an 15 digit result register. They weigh approximately 12 ounces and were originally sold with a plastic or metal carrying case.

Generally, earlier models featured more metal parts than their later counterparts.

Since their introduction, an estimated 140,000 Curta Calculators were made and sold until the early 1970s, when electronic calculators became available. Fortunately, it's still possible to purchase a vintage Curta calculator today. Where? Why the internet of course!

Here are current Curta Calculator listings on eBay:

RARE - CURTA Calculator TYPE II #527243 Very Nice Condition - 1964 Vintage As Is
RARE - CURTA Calculator TYPE II #527243 Very Nice Condition - 1964 Vintage As Is
$899.95
Time Remaining: 6d 2h 10m
Buy It Now for only: $899.95

VTG Curta Type I Calculator w/ Metal Case & Original Box 1 Near Mint #68884
VTG Curta Type I Calculator w/ Metal Case & Original Box 1 Near Mint #68884
$1,088.00
Time Remaining: 29d 20h 18m
Buy It Now for only: $1,088.00

Rare 1949 Curta Type I Calculator with low sn 6766 w/ metal can + mushroom caps
Rare 1949 Curta Type I Calculator with low sn 6766 w/ metal can + mushroom caps
$1,695.00
Time Remaining: 6d 7h
Buy It Now for only: $1,695.00

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 23d 6h 43m
Buy It Now for only: $19.95

1960 CURTA CALCULATOR - TYPE II  #516128 with metal container.
1960 CURTA CALCULATOR - TYPE II #516128 with metal container.
$724.99
Time Remaining: 14d 53m
Buy It Now for only: $724.99

Curta type II Calculator New Old Stock Near Mint in Box
Curta type II Calculator New Old Stock Near Mint in Box
$1,297.91
Time Remaining: 26d 7h 56m
Buy It Now for only: $1,297.91

Curta Calculator Type II with original case
Curta Calculator Type II with original case
$1,000.00
Time Remaining: 19h 5m
Buy It Now for only: $1,000.00

CURTA Type II Calculator
CURTA Type II Calculator
$1,199.00
Time Remaining: 4h 25m
Buy It Now for only: $1,199.00

♕♕♕ RARE - CURTA Calculator TYPE II #512553 - VERY GOOD Condition - 1959 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #512553 - VERY GOOD Condition - 1959 ♕♕♕
$1,099.00
Time Remaining: 26d 19h 48m
Buy It Now for only: $1,099.00

♕♕♕ RARE - CURTA Calculator TYPE I #31423 - GOOD STATE - 1955 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #31423 - GOOD STATE - 1955 ♕♕♕
$899.00
Time Remaining: 4d 12h 48m
Buy It Now for only: $899.00

♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - VERY GOOD STATE ♕♕♕
♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - VERY GOOD STATE ♕♕♕
$199.00
Time Remaining: 29d 14h 4m
Buy It Now for only: $199.00

Curta Mechanical Calculator, Type 1
Curta Mechanical Calculator, Type 1
$900.00
Time Remaining: 25d
Buy It Now for only: $900.00

♕♕♕ RARE - CURTA Calculator TYPE II #528814 - VERY GOOD Condition - 1964 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #528814 - VERY GOOD Condition - 1964 ♕♕♕
$999.00
Time Remaining: 26d 20h 12m
Buy It Now for only: $999.00

CURTA Type I CALCULATOR in PERFECT WORKING COND. 1956, #35641- w'can + 2 manuals
CURTA Type I CALCULATOR in PERFECT WORKING COND. 1956, #35641- w'can + 2 manuals
$1,195.00
Time Remaining: 2d 6h 45m
Buy It Now for only: $1,195.00

CURTA-Computing examples for the Curta Calculator (booklet in english language)
CURTA-Computing examples for the Curta Calculator (booklet in english language)
$19.50
Time Remaining: 5d 7h 45m
Buy It Now for only: $19.50

CURTA Mechanical Calculator Serial # 70246 WITH BOX & MANUELS!
CURTA Mechanical Calculator Serial # 70246 WITH BOX & MANUELS!
$1,499.00
Time Remaining: 4d 3h 59m
Buy It Now for only: $1,499.00

Antique Curta Type II Mechanical Calculator No. 552762 w/ Original Hard Case
Antique Curta Type II Mechanical Calculator No. 552762 w/ Original Hard Case
$749.99
Time Remaining: 6d 5h 41m

♕♕♕ RARE - CURTA Calculator TYPE II #556450 - VERY GOOD Condition - 1970 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #556450 - VERY GOOD Condition - 1970 ♕♕♕
$999.00
Time Remaining: 22d 18h 50m
Buy It Now for only: $999.00

RARE EARLY 1954 ALL BLACK CURTA Type II Calculator, Low #502313 -w/can+2 manuals
RARE EARLY 1954 ALL BLACK CURTA Type II Calculator, Low #502313 -w/can+2 manuals
$1,695.00
Time Remaining: 2d 7h 19m
Buy It Now for only: $1,695.00

THE CURTA GERMAN CALCULATOR POSTER
THE CURTA GERMAN CALCULATOR POSTER
$19.95
Time Remaining: 3d 18h
Buy It Now for only: $19.95

Very Rare Curta Calculator TYPE 1 #12446 Excellent Condition - 1950. With case.
Very Rare Curta Calculator TYPE 1 #12446 Excellent Condition - 1950. With case.
$999.99
Time Remaining: 27d 13h 10m
Buy It Now for only: $999.99

Vinatge 1951 Curta Type I Calculator No. 15062 - MINT w/ Original Box and Manual
Vinatge 1951 Curta Type I Calculator No. 15062 - MINT w/ Original Box and Manual
$1,799.98
Time Remaining: 21d 7h 57m
Buy It Now for only: $1,799.98

Curta Mechanical Calculator, Type 1
Curta Mechanical Calculator, Type 1
$1,500.00
Time Remaining: 29d 20h 42m
Buy It Now for only: $1,500.00

 Curta Calculator Type 2 Machine Original Metal Case
Curta Calculator Type 2 Machine Original Metal Case
$650.00
Time Remaining: 2d 2h 56m
Buy It Now for only: $890.00

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