We Compared 6 Egg Scales on Readability, Not Capacity

How we compared these egg scales

We started with one question: can this scale see a change of about half a gram?

That sounds arbitrary until you do the arithmetic on a hatch. An incubated egg is meant to lose roughly 11 to 13 percent of its set weight by day 18. On a 60 g egg that is about 7 g spread over 18 days, so around 0.4 g a day. A scale that cannot resolve that cannot give you an early warning about incubator humidity, which is the single most useful thing an egg scale does.

After readability we looked at capacity, tare, stated units, power source and the size of the platform, because a scale that will not hold an egg still is a scale you stop trusting. We also noted where a listing simply does not say. Two of these six leave out figures a buyer would reasonably expect, and that gap is part of the assessment.

Price did not decide much. The cheapest scale here reads to 0.01 g and the most expensive reads by size class only.

What actually matters in an egg scale

Readability in grams, because that is what limits hatch records

Readability is the smallest step the display can move. It is not the same as accuracy, but it is a hard ceiling on what you can see.

Convert everything to grams before you compare. 0.1 oz is 2.8 g. One gram is one gram. 0.1 g is 0.1 g. Against a 0.4 g daily change, only the last two are any use, and only the 0.1 g scales let you weigh once every couple of days and still see movement.

This is why the poultry branding on a box is worth so little here. The scale sold for poultry keepers reads in 0.1 oz steps, which is 2.8 g. The $9.99 kitchen scale reads in 0.1 g steps, a step twenty eight times smaller.

Grading is a much easier job, so the picture flips

If you never incubate, most of the above stops mattering.

US size classes are separated by about 0.25 oz per egg. That is a wide gap, and a scale reading in 0.1 oz or in whole grams will drop an egg into the right class every time. For a keeper selling by size at the farm gate, a coarse scale with a big steady platform and a sealed control panel is a better tool than a jeweller's scale with more digits.

So decide which job you are buying for before you look at the prices. The two jobs do not want the same instrument.

The egg rolls, and a rolling egg moves the number

An egg has no flat side. On a bare steel platform it rocks, settles, and rocks again, and the display chases it while you stand there waiting.

That is why a tray or a cover that doubles as a dish is worth more than it looks. Tare the tray, drop the egg in, read it once. Without one you will end up steadying the egg with a finger, which is exactly how a weight record gets quietly wrong.

Draughts do the same thing on the finer scales. The Diyife listing says so itself.

How to actually track hatch weight loss

Weigh on the day you set the eggs and write the numbers on the shells in pencil, so you follow the same eggs rather than an average of a changing group.

Work out the target now, not later. Take the set weight, take 12 percent of it, and that is roughly what the egg should have lost by day 18. A 62 g egg wants to be around 55 g. Write that on the shell too.

Then weigh every three or four days. Losing too slowly means the incubator is too humid, so lower the water level. Losing too fast means the air is too dry, so add water or surface area. Change one thing, then wait for the next weigh-in before changing anything else.

Stop at lockdown. Once the eggs are on the incubator floor and the lid is shut, opening it to weigh does more harm than the record is worth.

Final recommendation

The Yoncon 3000 g scale is the buy for most keepers. It reads to 0.1 g, it holds 3000 g, it comes with two trays and a tare button, and at $9.99 it pairs resolution fine enough for hatch records with the capacity and the platform to use it on more than one egg at a time.

If you want something that lives in a coop bag, the Diyife pocket scale is smaller and cheaper at $6.99, and it reads in finer steps still, as long as you accept it wants a solid indoor bench and stops at 1000 g. If you grade a lot of eggs and want the season's records kept and exported, the reflex Super Egg Scale does that through its app. And if your bench gets wet and you want a sealed control panel with a stated lifetime warranty, the Escali Primo is the sensible choice, provided 1 g steps are enough for what you are doing.