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 Calculator Type 1 Serial #48974 With Metal Case
Curta Calculator Type 1 Serial #48974 With Metal Case
$899.99
Time Remaining: 3d 14h 35m
Buy It Now for only: $899.99

Curta Type II Calculator SN 507028 1955 with Manual & Box Near Mint
Curta Type II Calculator SN 507028 1955 with Manual & Box Near Mint
$1,490.00
Time Remaining: 6d 4h 26m
Buy It Now for only: $1,490.00

CURTA TYPE II CALCULATOR BY CONTINA LIECHTENSTEIN # 536746 WITH PLASTIC CASE
CURTA TYPE II CALCULATOR BY CONTINA LIECHTENSTEIN # 536746 WITH PLASTIC CASE
$999.00
Time Remaining: 9d 1h 20m
Buy It Now for only: $999.00

Curta Calculator Advertisement World Famous!
Curta Calculator Advertisement World Famous!
$25.00
Time Remaining: 29d 19h 58m
Buy It Now for only: $25.00

Curta calculator Type 1 serial 8973
Curta calculator Type 1 serial 8973
$565.55 (3 Bids)
Time Remaining: 1d 25m

CURTA TYPE II 2 Mechanical Calculator #528815 - VIDEO OF OPERATION
CURTA TYPE II 2 Mechanical Calculator #528815 - VIDEO OF OPERATION
$1,015.00
Time Remaining: 25d 7h 23m
Buy It Now for only: $1,015.00

EXCEPTIONAL Curta Type 1 Calculator Mint Condition 66816
EXCEPTIONAL Curta Type 1 Calculator Mint Condition 66816
$2,895.00
Time Remaining: 23d 20h 52m
Buy It Now for only: $2,895.00

Curta Type I(Type II) mechanical calculator distance gauges for the German army
Curta Type I(Type II) mechanical calculator distance gauges for the German army
$600.00
Time Remaining: 22d 13h 4m
Buy It Now for only: $600.00

♕♕♕ RARE - CURTA Calculator TYPE I #30570 - VERY GOOD Cond - 1955 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #30570 - VERY GOOD Cond - 1955 ♕♕♕
$1,099.00
Time Remaining: 24d 17h 14m
Buy It Now for only: $1,099.00

CURTA TYPE II 2 Mechanical Calculator #557419 Gray Body Liechtenstein w/ Case
CURTA TYPE II 2 Mechanical Calculator #557419 Gray Body Liechtenstein w/ Case
$1,399.00
Time Remaining: 21d 21h 41m
Buy It Now for only: $1,399.00

Curta Type ll Calculator #516014
Curta Type ll Calculator #516014
$540.00 (1 Bid)
Time Remaining: 4d 4h 48m

Curta Type II Mechanical Calculator Serial | No. 523914 May 1963 | 200977-1
Curta Type II Mechanical Calculator Serial | No. 523914 May 1963 | 200977-1
$1,050.00
Time Remaining: 8d 21h 16m
Buy It Now for only: $1,050.00

CURTA II entirely SERVICED-Rechenmaschine-Calculator-Aggiungendo macchina-
CURTA II entirely SERVICED-Rechenmaschine-Calculator-Aggiungendo macchina-
$1,200.00
Time Remaining: 26d 18h 23m
Buy It Now for only: $1,200.00

♕♕♕ RARE - Early CURTA Calculator TYPE I #4553 - Near MINT Cond. - 1948 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE I #4553 - Near MINT Cond. - 1948 ♕♕♕
$1,999.00
Time Remaining: 24d 17h 8m
Buy It Now for only: $1,999.00

1968 Curta Type 1 Calculator S/N 72101 Complete With Box, Manuals, Sales Receipt
1968 Curta Type 1 Calculator S/N 72101 Complete With Box, Manuals, Sales Receipt
$999.99
Time Remaining: 6d 3h 5m
Buy It Now for only: $1,399.99

♕♕♕ RARE - Early CURTA Calculator TYPE II #500751 - VERY GOOD Cond. - 1953 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #500751 - VERY GOOD Cond. - 1953 ♕♕♕
$1,699.00
Time Remaining: 24d 16h 53m
Buy It Now for only: $1,699.00

Curta Type II Calculator rare (Japan sold version)
Curta Type II Calculator rare (Japan sold version)
$1,199.00
Time Remaining: 1d 5h 13m

CURTA TYPE I CALCULATOR in PERFECT WORKING ORDER w/ metal can and 2 manuals
CURTA TYPE I CALCULATOR in PERFECT WORKING ORDER w/ metal can and 2 manuals
$1,195.00
Time Remaining: 2d 5h 10m
Buy It Now for only: $1,195.00

♕♕♕ RARE - CURTA Calculator TYPE I #26400 - VERY GOOD Cond - 1954 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #26400 - VERY GOOD Cond - 1954 ♕♕♕
$1,099.00
Time Remaining: 11d 19h 52m
Buy It Now for only: $1,099.00

Curta Calculator type ii #519730 original canister, 2 manuals 1962 near perfect
Curta Calculator type ii #519730 original canister, 2 manuals 1962 near perfect
$999.99
Time Remaining: 4d 20h 56m
Buy It Now for only: $1,600.00

♕♕♕ 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: 18d 22h 34m
Buy It Now for only: $199.00

CURTA TYPE I CALCULATOR in EXCELLENT STATE, #24070, 1953 w/ metal can, 2 manuals
CURTA TYPE I CALCULATOR in EXCELLENT STATE, #24070, 1953 w/ metal can, 2 manuals
$1,495.00
Time Remaining: 2d 6h 40m
Buy It Now for only: $1,495.00

Vintage C.1954 Curta Type 1 Calculator w/ Case
Vintage C.1954 Curta Type 1 Calculator w/ Case
$1,399.00
Time Remaining: 4d 20h 24m
Buy It Now for only: $1,399.00

Curta Calculator Patents Full-Image on CD-ROM
Curta Calculator Patents Full-Image on CD-ROM
$19.95
Time Remaining: 17d 20h 34m
Buy It Now for only: $19.95

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