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Canon

Canon CNMMP21DX Desktop Printing Calculator - Black/Red

★★★★★4.6 (21 reviews)

Canon MP21DX printing calculator delivers fast 3.5 lines-per-second output with tax and markup functions for busy offices.

$95.08*$96.72Save 1%
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

The Canon MP21DX Desktop Printing Calculator is built for professionals who rely on printed tape to verify and archive their calculations. Its fluorescent display delivers bright, clear readouts, while the generously spaced keys are designed for comfortable, error-free input over long work sessions. Printing at up to 3.5 lines per second in two colors, the MP21DX keeps pace with fast data entry and makes it simple to distinguish positive totals from negative figures at a glance.

Beyond basic arithmetic, the MP21DX includes dedicated functions for tax calculation, mark-up, and mark-down — common operations in accounting, retail, and bookkeeping environments. The decimal switch, rounding switch, and grand total key add further flexibility for financial workflows. Powered by AC, the calculator is intended as a permanent desk fixture, delivering consistent performance without concern for battery life. At 3.7" tall, 9" wide, and 12.2" deep, it has a substantial presence but rewards that footprint with a full-featured, dependable calculating experience.

Key Features

Power_Sources - AC

Specifications

Display
Luminous Fluorescent
Print Speed
Up to 3.5 lines per second
Print Colors
Black/Red
Functions
Tax calculation, mark-up, mark-down, item counter, decimal switch, rounding switch, sign change, double zero, grand total
Power Source
AC adapter
Dimensions
3.7"H x 9"W x 12.2"D
Calculator Type
Printing
Color
Black
Model
MP21DX

Pros & Cons

👍 Pros

  • Fast 3.5 lines-per-second print speed keeps up with rapid data entry.
  • Large, well-spaced keys reduce input errors during extended use.
  • Bright fluorescent display is easy to read from various angles.
  • Built-in tax, mark-up, and mark-down functions streamline common accounting tasks.
  • Two-color printing clearly distinguishes positive from negative figures on the tape.

👎 Cons

  • AC power only, so it cannot be used away from an outlet.
  • Relatively large footprint at 9" x 12.2" takes up significant desk space.
  • Ink ribbon is a consumable that requires periodic replacement.
  • No USB or digital connectivity for transferring calculations to a computer.

Frequently Asked Questions

It features a luminous fluorescent display that provides bright, easy-to-read numbers even under harsh office lighting.
It prints at up to 3.5 lines per second, making it one of the faster desktop printing calculators for high-volume number crunching.
No, it is AC-powered only. It requires a wall outlet to operate and does not include battery backup.
It includes tax calculation, mark-up, mark-down, item counter, decimal and rounding switches, sign change, double zero, and grand total functions.
Yes, it prints in black and red, using a standard two-color ink ribbon to distinguish positive and negative values on the paper tape.

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