ready reckoner

American  

noun

1. reckoner.

---

ready reckoner British  

noun

1. a table of numbers used to facilitate simple calculations, esp one for applying rates of discount, interest, charging, etc, to different sums

---

Etymology

Origin of ready reckoner

First recorded in 1750–60

---

Example Sentences

See Examples For:

ready reckoner

Alongside a new "ready reckoner" tool, allowing farms to calculate how much they might be offered, Irranca-Davies announced £33m for nine preparatory schemes to " back farm businesses during the transition to the new SFS".

From BBC ● Jul. 20, 2025

On large matters he went right by the very largeness of his mind; but in small matters he suffered from the lack of any logical test and ready reckoner.

From Appreciations and Criticisms of the Works of Charles Dickens by G. K. (Gilbert Keith) Chesterton

This story may serve to show how nature supplies man with a ready reckoner in his faculty of perception, which suffices well enough for the affairs of the simpler sort of life.

From Anthropology by R. R. (Robert Ranulph) Marett

You’ve a good business, Mr. Macartney, so I dare say you’re a ready reckoner.

From We and the World, Part II A Book for Boys by Juliana Horatia Gatty Ewing

It looks like a page out of a ready reckoner or a mathematician's nightmare.

From The Lost Valley by James Morgan Walsh

Random Word

Spin the wheel and learn a new word!

---