Casio HR-300RC & HR-170RC Plus Printing Calculator - Practical

In this review of the Casio HR-300RC and HR-170RC Plus printing calculators, the bottom line is clear: these compact, mini-desktop machines are aimed at small offices and individuals who need reliable, readable printed records and straightforward cost/sell/margin tools. The biggest reason to buy is the blend of a backlit, easy-to-read display and robust print functions - including re-print, check & correct up to 150 steps, and time/date stamping - which make routine bookkeeping and invoice checks faster and less error-prone.

Key Features

• Re-Print Function: Quickly reproduce the last output so you can review or reattach a printed record without re-entering data.
• Check & Correct: Step through and correct up to 150 entries to find and fix mistakes before finalizing a printout.
• Profit Calculation: Built-in cost, sell and margin keys let users compute mark-up and margin directly for sales and accounting tasks.
• Time & Date Stamp: Integrated clock and calendar print the time and date on entries, which helps with filing and audit trails.
• Two-color Printing: Fast 2.0 lines per second printing with two-color output improves readability of positives and negatives on receipts and worksheets.

Who It's For

The Casio HR-300RC and HR-170RC Plus are best for small business owners, bookkeepers, and front-desk staff who need a compact desktop device that produces printed records and handles basic accounting tasks. The large keys and clear display make it suitable for users who prefer tactile input and visible results rather than a purely digital record.

Those who need advanced financial software integration or large-format printing should look elsewhere; these models focus on on-device calculation, printed receipts, and straightforward margin tools rather than networked or cloud features.

Pros & Cons

Pros

• Reliable printed records with re-print and two-color output for quick visual checks.
• Check & Correct up to 150 steps reduces the chance of repeated input errors and allows printing after correction.
• Convenient cost/sell/margin keys and time/date stamp that simplify daily sales calculations and recordkeeping.
• Easy-to-read backlit display and large keys improve usability in low light and for frequent use.

Cons

• Functionality and battery behavior appear mixed in customer reports, so portability on battery power may be inconsistent for some units.
• Not suitable for users who need integrated digital export or advanced accounting software connectivity.

Specifications

Model	HR-300RC and HR-170RC Plus
Printing	2-color printing, 2.0 lines per second
Display	Backlit easy-to-read LCD
Check & Correct	Up to 150 steps with after-print correction
Profit keys	Cost, Sell, Margin (Mark-up and Mark Down)
Time/Date	Clock and calendar with print time and date
Other features	Re-print function and subtotal/grand total

Our Verdict

These Casio mini-desktop printing calculators deliver strong value for anyone who needs printed transaction records and simple margin calculations without complex setup. They are well suited to small offices and retail counters thanks to the re-print and check & correct capabilities, but users who require consistent battery operation or digital export options should check power details before relying on battery-only use.

Frequently Asked Questions

Can the calculator print the time and date?
Yes, both models include a clock and calendar function and can print the time and date on entries.

How many steps can you check and correct?
The check & correct function supports up to 150 steps and allows printing after correction.

Does it support profit and margin calculations?
Yes, the calculators have dedicated cost, sell and margin keys as well as mark-up and mark-down functions for quick profit work.