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 I #40025 - VERY GOOD STATE - 1958 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #40025 - VERY GOOD STATE - 1958 ♕♕♕
$1,099.00
Time Remaining: 27d 12h 3m
Buy It Now for only: $1,099.00

CURTA CALCULATOR TYPE I 19501 - November 1952
CURTA CALCULATOR TYPE I 19501 - November 1952
$900.00
Time Remaining: 6h 15m

♕♕♕ RARE - LATE CURTA Calculator TYPE II #549571- Near MINT STATE - 1969 ♕♕♕
♕♕♕ RARE - LATE CURTA Calculator TYPE II #549571- Near MINT STATE - 1969 ♕♕♕
$1,099.00
Time Remaining: 27d 11h 46m
Buy It Now for only: $1,099.00

CURTA Type II Calculator  Serial 541392 (May 1967) with Case Excellent
CURTA Type II Calculator Serial 541392 (May 1967) with Case Excellent
$1,199.00
Time Remaining: 18d 23h 38m
Buy It Now for only: $1,199.00

♕♕♕ RARE - LATE CURTA Calculator TYPE I #74730 - VERY GOOD STATE - 1969 ♕♕♕
♕♕♕ RARE - LATE CURTA Calculator TYPE I #74730 - VERY GOOD STATE - 1969 ♕♕♕
$999.00
Time Remaining: 19d 18h 8m
Buy It Now for only: $999.00

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 26d 5h 11m
Buy It Now for only: $19.95

VERY RARE Curta Calculator Type II Hand Made Black Thick Leather Cover Canister
VERY RARE Curta Calculator Type II Hand Made Black Thick Leather Cover Canister
$150.00
Time Remaining: 19d 6h 46m
Buy It Now for only: $150.00

Curta calculator Type 1 no. 22621
Curta calculator Type 1 no. 22621
$900.00
Time Remaining: 21d 22h 40m
Buy It Now for only: $900.00

THE CURTA GERMAN CALCULATOR POSTER
THE CURTA GERMAN CALCULATOR POSTER
$19.95
Time Remaining: 6d 16h 28m
Buy It Now for only: $19.95

CURTA TYPE II CALCULATOR in VERY GOOD COND. w/ plastic can and 2 manuals
CURTA TYPE II CALCULATOR in VERY GOOD COND. w/ plastic can and 2 manuals
$1,495.00
Time Remaining: 12d 20h 17m
Buy It Now for only: $1,495.00

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: 19d 34m
Buy It Now for only: $1,800.00

♕♕♕ RARE - Early CURTA Calculator TYPE II #508145 - VERY GOOD STATE - 1956 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #508145 - VERY GOOD STATE - 1956 ♕♕♕
$1,399.00
Time Remaining: 3d 17h 39m
Buy It Now for only: $1,399.00

RARE EARLY 1956 ALL BLACK CURTA Type II Calculator Low SN #508592 w/can, manuals
RARE EARLY 1956 ALL BLACK CURTA Type II Calculator Low SN #508592 w/can, manuals
$1,695.00
Time Remaining: 12d 19h 47m
Buy It Now for only: $1,695.00

CURTA Calculator Type II Serial No. 557050 Excellent Condition
CURTA Calculator Type II Serial No. 557050 Excellent Condition
$999.00
Time Remaining: 6d 21h 4m

 VERY RARE - CURTA Calculator Brochure / Paperwork / Pamphlet / Manual)
VERY RARE - CURTA Calculator Brochure / Paperwork / Pamphlet / Manual)
$52.99
Time Remaining: 4d 12h 22m
Buy It Now for only: $52.99

♕♕♕ RARE - CURTA Calculator TYPE I #63726 - VERY GOOD STATE - 1966 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #63726 - VERY GOOD STATE - 1966 ♕♕♕
$1,399.00
Time Remaining: 27d 17h 10m
Buy It Now for only: $1,399.00

Vintage CURTA Precision Calculator Original Tri-Fold Advertising Insert
Vintage CURTA Precision Calculator Original Tri-Fold Advertising Insert
$14.99
Time Remaining: 4d 11h 53m
Buy It Now for only: $14.99

♕♕♕ UNIQUE !!! RARE - Wooden Box for CURTA Calculators TYPE II - GOOD STATE ♕♕♕
♕♕♕ UNIQUE !!! RARE - Wooden Box for CURTA Calculators TYPE II - GOOD STATE ♕♕♕
$399.00
Time Remaining: 3d 19h 7m
Buy It Now for only: $399.00

Curta Calculator Type 2 1958 Low Production,  Reds Levers are grouped together
Curta Calculator Type 2 1958 Low Production, Reds Levers are grouped together
$999.00
Time Remaining: 29d 3h 49m
Buy It Now for only: $999.00

CURTA-Computing examples for the Curta Calculator (booklet in english language)
CURTA-Computing examples for the Curta Calculator (booklet in english language)
$19.00
Time Remaining: 6d 21h 30m
Buy It Now for only: $19.00

Curta Calculator Patents Full-Image on CD-ROM
Curta Calculator Patents Full-Image on CD-ROM
$18.95
Time Remaining: 12d 20h 36m
Buy It Now for only: $18.95

Curta Calculator Instruction Manual
Curta Calculator Instruction Manual
$6.00
Time Remaining: 13d 1h 31m
Buy It Now for only: $6.00

CURTA calculator manual
CURTA calculator manual "Instructions for use of the Curta Calculator" (english
$10.50
Time Remaining: 20d 15h 10m
Buy It Now for only: $10.50

1965 Curta Miniature All Purpose Calculator Curta Company Van Nuys CA Print Ad
1965 Curta Miniature All Purpose Calculator Curta Company Van Nuys CA Print Ad
$14.99
Time Remaining: 6d 6h 47m
Buy It Now for only: $14.99

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