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:

CURTA TYPE II MECHANICAL CALCULATOR EXCELLENT OPERATIONAL & COSMETIC CONDITION
CURTA TYPE II MECHANICAL CALCULATOR EXCELLENT OPERATIONAL & COSMETIC CONDITION
$1,395.00
Time Remaining: 2d 9h 52m
Buy It Now for only: $1,395.00

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 1d 16h 5m
Buy It Now for only: $19.95

Very Rare Curta Calculator Hand Made Leather Cover
Very Rare Curta Calculator Hand Made Leather Cover
$300.00
Time Remaining: 21d 18h 18m
Buy It Now for only: $300.00

CURTA TYPE II MECHANICAL CALCULATOR EXCELLENT OPERATIONAL & LITTLE TO NO WEAR
CURTA TYPE II MECHANICAL CALCULATOR EXCELLENT OPERATIONAL & LITTLE TO NO WEAR
$1,000.00
Time Remaining: 9d 4h 39m
Buy It Now for only: $1,000.00

CURTA calculator Type 1 with metal case c1951
CURTA calculator Type 1 with metal case c1951
$1,200.00
Time Remaining: 20d 13h 7m
Buy It Now for only: $1,200.00

♕♕♕ RARE - CURTA Calculator TYPE I #31260 - GOOD Condition - 1955 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #31260 - GOOD Condition - 1955 ♕♕♕
$899.00
Time Remaining: 5d 5h 26m
Buy It Now for only: $899.00

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: 4d 18h 37m
Buy It Now for only: $19.50

CURTA Mechanical Calculator Serial # 70246 WITH BOX & MANUELS!
CURTA Mechanical Calculator Serial # 70246 WITH BOX & MANUELS!
$1,750.00
Time Remaining: 27d 12h 19m
Buy It Now for only: $1,750.00

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
$1,800.00
Time Remaining: 24d 11h 29m
Buy It Now for only: $1,800.00

EXTREMELY RARE CURTA TYPE I Calculator, special QUICK-EDITION w/box,case,manuals
EXTREMELY RARE CURTA TYPE I Calculator, special QUICK-EDITION w/box,case,manuals
$1,895.00
Time Remaining: 4d 16h 7m
Buy It Now for only: $1,895.00

RARE - CURTA Calculator TYPE I Metallic CLEARING LEVER
RARE - CURTA Calculator TYPE I Metallic CLEARING LEVER
$59.99
Time Remaining: 14d 17h 37m
Buy It Now for only: $59.99

♕♕♕ RARE - CURTA Calculator TYPE II #528814 - VERY GOOD Condition - 1964 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #528814 - VERY GOOD Condition - 1964 ♕♕♕
$1,099.00
Time Remaining: 5d 5h 34m
Buy It Now for only: $1,099.00

THE CURTA GERMAN CALCULATOR POSTER
THE CURTA GERMAN CALCULATOR POSTER
$19.95
Time Remaining: 12d 3h 23m
Buy It Now for only: $19.95

Curta Type1 Calculator Contina AG Mauren Vintage!
Curta Type1 Calculator Contina AG Mauren Vintage!
$315.00 (6 Bids)
Time Remaining: 6d 9h 6m

CURTA Calculator Type 1 #75042 RARE!!
CURTA Calculator Type 1 #75042 RARE!!
$1,199.00
Time Remaining: 3d 3h 49m

♕♕♕ 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: 5d 5h 11m
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 ♕♕♕
$999.00
Time Remaining: 12d 22h 10m
Buy It Now for only: $999.00

CURTA Type 1 Calculator (Serial #79287) original plastic case Vintage
CURTA Type 1 Calculator (Serial #79287) original plastic case Vintage
$620.00 (2 Bids)
Time Remaining: 7d 13h 51m

CURTA-Instructions for use of the Curta Calculator (booklet in english language)
CURTA-Instructions for use of the Curta Calculator (booklet in english language)
$19.50
Time Remaining: 1d 12h 2m
Buy It Now for only: $19.50

immaculated CURTA CALCULATOR Type II - SN 548525 with original box and manuals
immaculated CURTA CALCULATOR Type II - SN 548525 with original box and manuals
$1,545.00
Time Remaining: 5d 23h 47m
Buy It Now for only: $1,545.00

Curta Calculator Holder Only
Curta Calculator Holder Only
$165.00
Time Remaining: 10d 5h 5m
Buy It Now for only: $165.00

1970 CURTA TYPE 1 #79263 CALCULATOR CONTINA ORIGINAL Box Case Instructions WORKS
1970 CURTA TYPE 1 #79263 CALCULATOR CONTINA ORIGINAL Box Case Instructions WORKS
$1,599.99
Time Remaining: 26d 5h 22m
Buy It Now for only: $1,599.99

Vintage 1959 CURTA Type II Calculator Case Manuals Sports Car Rally Aviation
Vintage 1959 CURTA Type II Calculator Case Manuals Sports Car Rally Aviation
$630.00 (2 Bids)
Time Remaining: 6d 4h 34m

CURTA TYPE II MECHANICAL CALCULATOR EXCELLENT OPERATIONAL & COSMETIC CONDITION
CURTA TYPE II MECHANICAL CALCULATOR EXCELLENT OPERATIONAL & COSMETIC CONDITION
$682.26 (4 Bids)
Time Remaining: 2d 5h 47m

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